• Elon Musk has had a big year with Tesla and SpaceX soaring in value, supercharging his net worth.
• He helped Donald Trump win reelection and intends to transform the US government in 2025.
• Scroll down for seven charts showing how Musk's 2024 played out.

Elon Musk has had a year for the record books.

His businesses have taken off, with Tesla, SpaceX, xAI, and Neuralink all touching new valuation highs. Their success has boosted Musk's net worth to above $450 billion for the first time, putting him over $200 billion ahead of the world's second-richest person, Amazon's Jeff Bezos.

Musk has also become a power player in US politics after wielding his cash and clout to help win Donald Trump a second term in office. As one of the president-elect's closest advisors, he's now gearing up to overhaul the US government.

The situation seems worse at X, formerly Twitter, after Musk's $44 billion takeover and reshaping of the platform sparked an advertiser exodus.

Take a look at Musk's 2024 in charts (all data is accurate as of Friday, December 20):

1. Charging ahead

Tesla shares have shot up as much as 85% this year, driving the electric vehicle maker's market value above $1.4 trillion for the first time. They've since retreated but continue to trade near record levels.

The automaker has benefited from market buzz around artificial intelligence — which it's harnessing to develop self-driving cars and humanoid robots — plus a robust US economy and the Federal Reserve cutting interest rates.

Investors are also betting that Musk's businesses will benefit from his close ties to Trump, which could translate into less stringent regulations, government subsidies, tariff exemptions, and more.

2. Reaching for the stars

SpaceX's valuation nearly doubled from $180 billion at the end of last year to $350 billion this month, based on the price paid by the company and its backers for employee shares in its latest tender offer.

Musk's rocket, spacecraft, and satellite communications company made several technological breakthroughs this year. For example, it plucked the first-stage booster of its new Starship out of the air using a massive pair of mechanical "chopsticks" in October.

3. Shifting fortunes

Musk's net worth slumped in the spring as Tesla stock tumbled, dropping below $170 billion at its nadir.

But it rebounded by over $300 billion to touch an unprecedented $486 billion on December 17, as Tesla hit fresh highs and SpaceX notched a $350 billion valuation.

4. Rise of the robots

Musk's artificial intelligence company, xAI, was only founded in July 2023.

Yet it notched a post-money valuation of $24 billion in May following its Series B funding round. That rose to $50 billion in November, reports say, meaning the maker of the Grok chatbot is worth roughly as much as Monster Beverage.

5. X marks the drop

It remains tricky to gauge the health of X, the social media company formerly known as Twitter that Musk took private in 2022. One way is to use Fidelity's monthly estimates of the value of its stake in the business.

The mutual fund giant's figures imply that X's valuation has crashed since Musk's purchase. The tech billionaire laid off a large part of the company's workforce and relaxed content moderation in support of greater free speech, triggering an advertiser exodus that hammered the company's revenues.

Regardless, Musk recently posted on X that the platform has roughly 1 billion active users, although around 40% of them only log on during important world events.

6. Trump train

Musk was one of the biggest spenders in the US presidential election, deploying over $270 million to back Trump's race for president, run ads against Democrats, and promote conservative viewpoints.

His starring role in Trump's victory and emergence as one of the president-elect's closest advisors and a co-chief of the new Department of Government Efficiency suggests that his investment in the election has paid off.

7. Building brainpower

Neuralink, Musk's neurotechnology company, was valued at $8 billion this summer, up from about $2 billion three years earlier.

The developer of brain-computer interfaces wants to allow people with quadriplegia to control computers with their thoughts. Musk released footage this spring of the first patient to receive one of its brain implants.

• Bernie Sanders says Elon Musk is using his wealth and political clout to undermine US democracy.
• Musk lambasted a government funding deal and said a shutdown would be the Democrats' fault.
• "Are Republicans beholden to the American people? Or President Musk?" Sanders asked on X.

Elon Musk is wielding his immense wealth and political power to pressure US lawmakers, shifting America from democracy to oligarchy, Sen. Bernie Sanders says.

In two recent X posts, the Vermont senator called out Musk's influence over Republicans and his warnings to legislators if they don't vote the way he wants.

"The US Congress this week came to an agreement to fund our government," he wrote late Wednesday. "Elon Musk, who became $200 BILLION richer since Trump was elected, objected. Are Republicans beholden to the American people? Or President Musk? This is oligarchy at work."

"Elon Musk, the richest man in the world, is threatening to unseat elected officials if they do not follow his orders to shut down the government during the holidays," he said in a Thursday post. "Are we still a democracy or have we already moved to oligarchy and authoritarianism?"

Musk blasted the funding bill in question as bloated and overcomplicated and wrote on X that "any member of the House or Senate who votes for this outrageous spending bill deserves to be voted out in 2 years!"

He threw his weight behind Republicans' alternative bill, hailing it as cleaner and simpler. Moreover, he posted that it would be the Democratic Party's fault if an agreement isn't reached and the government shuts down.

Both Trump's team and Musk have pushed back against the idea that he's pulling Republicans' strings. Musk has said he's only bringing things to the attention of his followers, and they're free to voice their support.

The Tesla and SpaceX CEO's net worth hit a record $486 billion on Tuesday, up $257 billion from the start of the year — a figure that exceeds the fortune of the world's second-richest man, Amazon founder Jeff Bezos. Tesla stock has slid since then, but Musk was still worth $455 billion at Thursday's close.

As Sanders wrote, Musk's wealth surged after President Trump's election victory as Tesla stock rode a broader market rally, and investors wagered the automaker would benefit from Musk's close ties to the White House. Additionally, SpaceX was valued at a record $350 billion this month, boosting the worth of Musk's stake in the rocket company.

Sanders has called out Musk several times in his criticisms of wealth inequality, which often single out billionaires for having too much influence and paying too little in taxes.

"Never before in American history have so few billionaires, so few people had so much wealth and so much power," he said in a clip from "Meet the Press" that he recently shared on X.

"We can't go around the world saying, 'Oh well, you know in Russia, Putin has an oligarchy," Sanders continued. "Well, we've got an oligarchy here, too."

The progressive lawmaker has also clashed with Musk's Big Tech peers. Sanders recently told Bill Gates that he was a "very innovative guy" who deserved to be financially rewarded for his contributions to society as Microsoft's cofounder — but not to the tune of billions of dollars.

"How much do you deserve? Can you make it on a billion? Think you could feed the family? Probably. Pay the rent? Maybe," Sanders quipped.

In response to Sanders saying billionaires shouldn't exist in 2019, Meta CEO Mark Zuckerberg, now the world's third-richest person, agreed that "some of the wealth that can be accumulated is unreasonable."

• Michael Dell is one of the world's wealthiest people, with a net worth of more than $100 billion.
• The Dell Technologies founder made his fortune by democratizing the PC and striking shrewd deals.
• Here's a look at his background, career, and how he spends his fortune.

Michael Dell, the tech entrepreneur who helped bring the personal computer to the masses, ranks among the world's wealthiest people with a net worth of $122 billion, per the Bloomberg Billionaires Index.

From his early career as one of the youngest CEOs of a Fortune 500 company until now, Dell is used to getting his way. He was only 23 when his company had its IPO in 1988. Dell took the PC maker private in 2013 only to relist it five years later, and has now shifted the company's focus toward serving the artificial intelligence boom.

Dell lives the extravagant life of a successful business figure as well, complete with all of the private planes, summer homes, and sweet rides you'd expect from a billionaire.

Michael Dell was born on Feb. 23, 1965, in Houston, Texas.

Dell was fascinated with gadgets from a young age. When he was 15, he bought one of the first Apple computers and disassembled it to see if he could put it back together.

Source: Academy of Achievement

When Dell was in high school, he got a job selling newspaper subscriptions.

After figuring out how to target an untapped customer base, he made $18,000 in just one year.

Source: Academy of Achievement

Though he was really only interested in computers, Dell entered the University of Texas at Austin as a pre-med student in 1983.

He spent his spare time upgrading PCs and selling them from his dorm room, making $180,000 in his first month of business. Though Dell never came back for his sophomore year, he returned to his dorm for a photo opp in 1999.

Source: Entrepreneur

In 2018, Dell tweeted out the first financial statement from his dorm PC company.

Dell used the statement to convince his parents that he didn't have to go back to college.

He sold nearly $1 million worth of computers and, after paying salaries and expenses, made over $198,000 in gross profit.

He officially launched his company in 1984, under the name PC's Limited.

It soon became one of the fastest-growing companies in the country, raking in more than $6 million in sales in its first year of business.

Source: Entrepreneur

He changed the company's name to Dell Computer Corp. in 1987, and sales continued to soar.

It went public in 1988, raising $30 million. Dell made about $18 million from the deal, and by 1992, the 27-year-old CEO was the youngest person to lead a Fortune 500 company.

Source: Entrepreneur, Academy of Achievement

In 1988, he went on a blind date with Susan Lieberman, a fashion designer from Dallas.

The two had an instant connection. "Most men I dated talked about themselves a lot and tried to impress me," Susan told Texas Monthly. "He was the nicest guy I'd ever met."

They were married in October 1989 and have four children.

In 2001, Susan Dell designed the inaugural ball gowns for Jenna and Barbara Bush.

She operated a successful boutique in Austin and even had two labels of her own before opening a new fashion brand, Phi, in New York City, which she closed in 2009.

Source: Austin Business Journal, Texas Monthly, New York Magazine

His son, Zack Dell, started following in his dad's footsteps.

In 2014, at age 17, Zach cofounded his own dating startup Thread. Thread later became a photo-sharing app but is no longer around.

The family's 33,000-square-foot home outside Austin is called "the Castle" because of its hilltop perch and heavy security presence.

The house boasts eight bedrooms, 13 bathrooms, a tennis court, indoor and outdoor pools, and gorgeous views of Lake Austin.

Source: The Independent

 

Dell also owns a 6,380-square-foot contemporary ranch house in the nearby hills, where the family keeps Arabian horses.

Source: Mother Jones, The Nation

The Dell family has spent vacations at the "Raptor Residence," a seven-bedroom, 18,500-square-foot compound in Kukio, Hawaii.

Source: Business Insider and The Pinnacle List

Dell loved the resort area of Hualalai so much that in 2006, with the help of Walmart heir Rob Walton, he bought the hotel and resort through his investment company, MSD Capital

Dell started MSD Capital in 1998 to manage his family's wealth. The firm has made investments in a number of companies, including IHOP and Applebee's parent company, apparel company Phillips-Van Heusen, and offshore oil drilling company Independence Contract Drilling.

Source: Bloomberg, Pitchbook, SEC filings.

Through MSD Capital, Michael Dell also invested in real estate in Hawaii, Mexico, and California.

The company invests in luxury hotels, commercial and multifamily properties, and land development, and it participates in other real-estate-development funds.

Dell has his fair share of hot wheels as well.

His car collection at one point included a 2004 Porsche Boxster, a Porsche Carrera GT, and a Hummer H2.

Source: MSN 

He's also owned private jets including a Gulfstream V.

Private planes come in handy when Michael and Susan Dell travel for their nonprofit.

Since 1999, the Michael & Susan Dell Foundation has given billions to nonprofits and social enterprises in the US, India, and South Africa.  

 

Dell is friends with other tech billionaires.

Salesforce CEO Marc Benioff is a particular buddy. The two of them did a public Fitbit walking challenge in 2014 and Benioff's team won. But Dell is so competitive (and also a fitness fanatic), that Benioff jokingly suspected that Dell put his Fitbit on his dog to help him score more steps.

Source: Fitbit, Business Insider

CEO to chairman and back again

In 2004, Dell left the helm of his PC company and became chairman. But in 2007, with Dell's share of the PC market declining, he shook up management, took the reins as CEO, and never let go again. As the PC market continued to decline, he expanded into new markets through new products and acquisitions.

In 2013, the Texan won a long battle to take Dell private, fighting off legendary activist investor Carl Icahn, who wanted to stop the deal, replace the board, and fire Dell.

 

Two years after winning that battle, Dell announced plans to buy EMC for $67 billion.

The financing of a deal this huge was complicated, and at first, skeptics thought it would fall apart, citing everything from tax complications to pushback from investors in VMware, a company EMC mostly owned.

Dell didn't lose.

Instead, he catapulted his company into a much bigger one with the purchase of EMC. He became the leader of what was then the largest private company in the tech industry.

After five years as a private company, Dell went public again in late 2018 through a complex arrangement that involved buying back shares in VMware, the software business in which it held an 80% stake.

He received a huge windfall in November 2023, when Broadcom closed its $69 billion takeover of VMware.

The PC tycoon owned nearly 40% of the cloud-computing business before it was sold to the microchip giant. As a result, he received well over $20 billion in Broadcom stock and cash in exchange for his stake, filings show.

Dell stock has surged by over 300% over the past two years, as investors bet it will be a key player in the AI revolution.

Dell shares have soared from below $34 in September 2022 to around $115, valuing the company at about $79 billion.

The stock surge likely reflects the company's pivot to providing a broad suite of AI solutions to corporations, selling everything from servers and data storage to AI PCs, networking, and services.

Dell trumpeted AI's potential in an interview published this September, saying it would "accelerate and advance scientific discovery" and "make humans happier, healthier, and more successful."

"I'm incredibly excited about it," he added. "As with any new thing, there are all sorts of uncertainties and questions, including how's it all going to happen. Nobody knows, and we love being in the middle of it."

Source: McKinsey

 

Dell's net worth has soared to more than $100 billion.

Dell's surging stock has supercharged its founder's net worth, raising it from about $45 billion two years ago to $122 billion.

Dell is now one of the dozen or so centibillionaires, and ranks 11th on the Bloomberg Billionaires Index.

• Billionaire investor Ray Dalio wants people to give charity gift cards instead of material gifts.
• Recipients can decide which charity they want the money to go to.
• An expert in billionaire philanthropy said it could be good for wealthy people who donate to charity anyway.

Wall Street billionaire Ray Dalio is asking you to consider ditching buying gifts and instead give charity cards.

His "#RedefineGifting" campaign encourages his followers to give charity gift cards to their loved ones and request them in return.

Since 2020, Dalio, who founded Bridgewater Associates, has partnered with the nonprofit TisBest to give away 90,000 charity gift cards worth $5 million. The purchaser decides the amount, and the recipient chooses one of the 1.8 million US-registered charities on Tisbest's platform to donate the money.

"The shopping season has begun — a month-long compulsion to buy something, for everyone. We're pressed. We're stressed. And we waste time and money on gifts that might have little meaning," Dalio posted on X.

"Consider giving people donations to their favorite charities. And request that they give a donation to your favorite charity," he added.

A November Gallup poll found that US shoppers plan to spend an average of more than $1,000 on gifts this year for Christmas and other holidays.

Dalio has said in previous posts that he's given charity gift cards to his friends and colleagues for more than 10 years and has enjoyed learning about their favorite charities.

Dalio has pitched the "infectiously joyous and healthy" cards as simpler, easier, and different from material gifts that might be unwanted.

But charity cards may not go down well with those who — struggling financially amid historic inflation and heightened interest rates — would prefer a material gift.

Hans Peter Schmitz, a North Carolina State University professor researching billionaire philanthropy, told Business Insider that gift cards seemed a particularly good idea for wealthy people who might donate to charities anyway.

He advised ensuring everyone was on the same page and giving a more conventional gift alongside a card to avoid disappointing the recipient.

"It may be best to first ask and agree with family and friends that this is what everyone wants," Schmitz said. "It may also be worthwhile adding such a charitable gift along with something more personal."

"Any gift should still signify a personal connection and express more than just an expected transaction," he added.

• The elite group worth more than $100 billion includes Elon Musk, Jeff Bezos, and Bill Gates.
• The 16 members have grown almost $900 billion richer this year and are jointly worth $2.8 trillion.
• Walmart heirs Jim, Rob, and Alice Walton joined the club for the first time in September.

Elon Musk, Jeff Bezos, and Mark Zuckerberg are among the handful of people on the planet with a net worth above $100 billion.

Members of this elite group have amassed 12-digit fortunes by owning huge amounts of stock in some of the world's most valuable companies. Most are founders and either current or former CEOs, and some, such as Warren Buffett, would be much richer if they didn't give billions to charity.

The 16 people in this very exclusive club have a combined wealth of about $2.8 trillion, according to the Bloomberg Billionaires Index. They're worth more than Amazon or Google owner Alphabet, which command market values of around $2.4 trillion each.

All but one of them have grown richer this year, adding a net $890 billion to their collective fortunes. Walmart ($762 billion), Eli Lilly ($740 billion), and JPMorgan ($675 billion) are all worth significantly less than that.

Walmart heirs Jim, Rob, and Alice Walton joined the exclusive group in September, thanks to their net worths surging by upward of $43 billion this year.

Here's the list of individuals worth at least $100 billion, showing Bloomberg's estimate on December 16, how much it's changed this calendar year, and the source of their wealth.

1. Elon Musk

Net worth: $474 billion

YTD change in wealth: +$245 billion

Source of wealth: Tesla and SpaceX stock

Elon Musk is the CEO of the electric-vehicle maker Tesla and the spacecraft manufacturer SpaceX. He's also the owner of X, the social network formerly known as Twitter. His other businesses include The Boring Company, Neuralink, and xAI.

Musk's wealth has nearly doubled this year — surging by $245 billion or almost Jeff Bezos' entire net worth — because Tesla stock has jumped by over 85% and SpaceX's valuation has surged to $350 billion, per Bloomberg.

2. Jeff Bezos

Net worth: $251 billion

YTD change in wealth: +$74.5 billion

Source of wealth: Amazon stock

Jeff Bezos is the founder, executive chairman, and former CEO of Amazon, the e-commerce and cloud-computing giant.

He also founded the space company Blue Origin and owns The Washington Post.

3. Mark Zuckerberg

Net worth: $221 billion

YTD change in wealth: +$92.6 billion

Source of wealth: Meta stock

Mark Zuckerberg is the cofounder, chairman, and CEO of Meta Platforms, the social-media titan behind Facebook, Instagram, WhatsApp, and Threads.

Meta's Reality Labs division makes virtual-reality and augmented-reality headsets and experiences.

4. Larry Ellison

Net worth: $194 billion

YTD change in wealth: +$70.9 billion

Source of wealth: Oracle and Tesla stock

Larry Ellison is the cofounder, chief technology officer, and former CEO of Oracle, an enterprise software company specializing in cloud computing and database platforms.

He invested in Tesla prior to joining the automaker's board in 2018 and made more than 10 times his money on paper by the time his term as a director ended in August 2022.

5. Bernard Arnault

Net worth: $178 billion

YTD change in wealth: -$29.3 billion

Source of wealth: LVMH stock

Bernard Arnault is the founder, chairman, and CEO of LVMH Moët Hennessy Louis Vuitton. His conglomerate owns a bevy of luxury brands, including Dior, Fendi, Dom Pérignon, Sephora, and Tiffany & Co.

LVMH stock has struggled this year, falling over 10% and eroding Arnault's net worth in the process.

6. Larry Page

Net worth: $175 billion

YTD change in wealth: +$48.2 billion

Source of wealth: Alphabet stock

Larry Page cofounded Google with his Stanford University classmate Sergey Brin in a friend's garage in 1998 and served as CEO until 2001.

He took the reins again between 2011 and 2015 after Google was restructured as a subsidiary of Alphabet alongside other businesses such as YouTube and Waymo.

7. Bill Gates

Net worth: $165 billion

YTD change in wealth: +$23.9 billion

Source of wealth: Microsoft stock

Bill Gates is the cofounder and former CEO of Microsoft, which makes the Office application suite, the cloud-computing platform Microsoft Azure, and Xbox consoles.

He's renowned for his philanthropic work at the helm of the Bill & Melinda Gates Foundation, one of the world's largest charitable entities.

8. Sergey Brin

Net worth: $164 billion

YTD change in wealth: +$44.3 billion

Source of wealth: Alphabet stock

Sergey Brin cofounded Google with Page in 1998 and served as the search-and-advertising titan's first president.

He and Page stepped down from their respective roles as Alphabet's president and CEO in 2019.

9. Steve Ballmer

Net worth: $156 billion

YTD change in wealth: +$25.4 billion

Source of wealth: Microsoft stock

Steve Ballmer served as Microsoft's CEO between 2000 and 2014. He joined the company in 1980 as Bill Gates' assistant, initially negotiating a profit share, which he later swapped for an equity stake when it became excessively large.

Ballmer retired as CEO in 2014 with a 4% stake — a position now worth more than $130 billion. He promptly bought the Los Angeles Clippers for $2 billion and remains the basketball team's owner.

10. Warren Buffett

Net worth: $143 billion

YTD change in wealth: +$23 billion

Source of wealth: Berkshire Hathaway stock

Warren Buffett acquired Berkshire Hathaway when it was a failing textile mill in 1965 and has since grown it into one of the world's largest companies. His nearly 15% stake is worth around $141 billion.

The famed investor's conglomerate owns scores of businesses, including GEICO, See's Candies, and BNSF Railway, and holds multibillion-dollar stakes in public companies such as Apple and Coca-Cola.

Buffett has gifted about half his Berkshire shares to the Gates Foundation and his four family foundations since 2006.

11. Michael Dell

Net worth: $130 billion

YTD change in wealth: +$51.4 billion

Source of wealth: Dell stock

Michael Dell is the founder, chairman, and CEO of the eponymous computer maker. Dell stock has roughly tripled since March last year to $119, valuing the company at over $80 billion, as investors wager it will be a key beneficiary from the AI boom.

Dell owns about 46% of his company, and pocketed well over $10 billion from the sale of Dell-backed VMware to Broadcom last year.

12. Jim Walton

Net worth: $117 billion

YTD change in wealth: +$44.5 billion

Source of wealth: Walmart stock

Jim Walton is the youngest son of Walmart founder Sam Walton, who gave each of his four children a 20% stake in the budding retail business over 70 years ago. Jim and his two surviving siblings, Rob and Alice, each still own over 11% of the company.

Jim's net worth crossed $100 billion in September following an 80% surge in Walmart stock this year.

13. Jensen Huang

Net worth: $115 billion

YTD change in wealth: +$71.4 billion

Source of wealth: Nvidia stock

Jensen Huang cofounded Nvidia in 1993, but the microchip maker has become a market darling within the past two years as its semiconductors have proven pivotal to developing artificial intelligence.

Nvidia's stock price has skyrocketed from under $15 at the end of 2022 to $132. That has boosted the company's value to $3.2 trillion — meaning it now rivals Apple as the world's most valuable company —and bolstered Huang's superrich status in the process.

14. Rob Walton

Net worth: $115 billion

YTD change in wealth: +$43.3 billion

Source of wealth: Walmart stock

Rob Walton, Sam Walton's eldest, sat on Walmart's board for more than 40 years before retiring this June.

His net worth passed $100 billion for the first time in September, making him the second Walton to join the club after his younger brother, Jim.

15. Alice Walton

Net worth: $114 billion

YTD change in wealth: +$43.8 billion

Source of wealth: Walmart stock

Alice Walton is Sam Walton's only daughter, and the world's richest woman after overtaking L'Oréal heiress Françoise Bettencourt Meyers earlier this year.

She joined her brothers, Jim and Rob, in the $100 billion club in September.

16. Amancio Ortega

Net worth: $104 billion

YTD change in wealth: +$16.9 billion

Source of wealth: Inditex stock

Amancio Ortega is the founder and former chairman of Inditex, a fashion retail group home to brands such as Zara, Bershka, and Massimo Dutti.

The billionaire philanthropist and real-estate investor stopped running Inditex in 2011. His daughter Marta Ortega Pérez was appointed chair at the end of 2021.

• Elon Musk fixes the biggest problems at his companies every week, Marc Andreessen says.
• Musk quickly tackles pressing issues by working directly with engineers and coders, the VC said.
• The Tesla and SpaceX CEO's method attracts great talent and inspires deep loyalty, Andreessen said.

Elon Musk has built some of the world's most valuable companies, from Tesla to SpaceX. A key driver of his success is a relentless focus on solving problems fast, often by working directly with the engineers or coders who've gotten stuck, Marc Andreessen says.

The legendary venture capitalist shared his insights from working closely with Musk on X, xAI, and SpaceX during a recent episode of the "Modern Wisdom" podcast.

Unlike many CEOs, Musk is devoted to understanding every aspect of his businesses, the Andreessen Horowitz cofounder and general partner said. He's "in the trenches and talking directly to the people who do the work," and acting as the "lead problem solver in the organization."

Musk's businesses include Tesla, SpaceX, Neuralink, xAI, The Boring Company, and X — formerly Twitter. Andreessen said that every week at each of his companies, Musk "identifies the biggest problem that the company is having that week and he fixes it. And then he does that every week for 52 weeks in a row. And then each of his companies has solved the 52 biggest problems that year, in that year."

In contrast, the bosses of most large corporations spend months or years holding meetings, watching presentations, and conducting legal and compliance reviews before they address their most pressing issues, Andreessen told host Chris Williamson.

Musk sees his businesses almost like assembly lines, and he focuses on removing bottlenecks and speeding up the conveyer belt a little more every week, the billionaire VC and Netscape cofounder said.

His laser focus on fixing problems attracts exceptionally talented people to his companies who want to work extremely hard and meet exacting standards, fueling further success for his businesses, Andreessen said.

Straight to the source

When Musk spots a bottleneck, he cuts through the layers of management to talk to the people actually working on the line or writing the code, Andreessen said.

"So he's not asking the VP of engineering to ask the director of engineering to ask the manager to ask the individual contributor to write a report that's to be reviewed in three weeks," the early-stage investor said. "He would throw them all out of the window."

Andreessen said Musk's approach of finding the person grappling with a particular issue, and then working with them to solve it, inspires deep loyalty.

The person thinks "if I'm up against a problem I don't know how to solve, freaking Elon Musk is going to show up in his Gulfstream, and he's going to sit with me overnight in front of the keyboard, or in front of the manufacturing line, and he's going to help me figure this out," the tech guru said.

Musk's strategy of tackling problem after problem has a "catalytic, multiplicative effect" that helps his businesses power ahead of rivals, Andreessen added.

In the past, Musk has been criticized for spreading himself too thin and not allocating enough time, energy, and resources to any one business like Tesla.

The world's wealthiest man has also said at points that he's working too hard and juggling too much, and his "hardcore" management style has been slammed as brutal and mercurial.

But in terms of technical progress and value generation, Musk's approach of getting involved quickly to fix things appears to be paying off.

• Michael Dell says humor is vital and workers need to laugh and play and relax sometimes.
• The Dell Technologies chief said people shouldn't always listen to their parents' advice.
• Dell said he goes to sleep early, works out around dawn, and enjoys Texas barbecue.

Laugh and play pranks, balance work with downtime, and don't always listen to your parents' advice, Michael Dell says.

The Dell Technologies founder and CEO shared the colorful life advice during a recent episode of the "In Good Company" podcast. Dell, 59, ranked 13th on the Bloomberg Billionaires Index with a $115 billion fortune at Thursday's close.

The personal-computing pioneer said humor plays a key role at his company.

"If you can't laugh, joke around, play tricks on people, you're doing it wrong, right?" he said. "You have to be able to laugh at yourself."

Dell said he toiled tirelessly as a young man to build his company, which generated $88 billion of revenue last year. But he warned against overworking and burnout.

"I learned a long time ago that there's a diminishing return to the number of hours worked in any given day, " he said. "And if you're going to do something for a long time, you better find the [right mixture of] working and playing and relaxing."

Dell said he goes to bed at about 8:30 or 9 p.m. each night and wakes up around 4 or 5 a.m. to exercise.

"You won't find me at the nightcap," he said. "I'll be asleep."

Barbecue and bad advice

The Texan businessman also voiced his love for one of his home state's delicacies, even if he doesn't prepare it himself.

"I believe in the theory of labor specialization, so I personally am not cooking a lot of barbecue, but I'm definitely eating barbecue," he said.

Dell also offered some general advice for young people: "Experiment, take risks, fail, find difficult problems, do something valuable, don't be afraid, and, you know, be bold."

He recalled his parents encouraging him to become a doctor and urging him to set aside his passion for building computers. On the other hand, he remembered his mother telling him and his two brothers when they were little to "play nice but win," which became his company's guiding philosophy and the title of his 2021 book.

"Well, yeah, your parents aren't always right, but they're not always wrong either," he said, adding people's "mileage may vary on the parents."

• The Waltons have reclaimed the title of the world's wealthiest family
• The Walmart family fortune has grown by 66% since last year to a record $432 billion.
• Jim, Rob, Alice, and the other Waltons are richer than the royal families of Abu Dhabi and Qatar.

The Waltons are once again the world's wealthiest family, ranking ahead of Gulf royalty, luxury fashion houses, and industrial dynasties.

The heirs to the Walmart fortune have grown their wealth by 66% since last year to a record $432 billion as of December 5, meaning they've regained the No.1 spot on Bloomberg's annual list of the world's richest families.

That wealth figure exceeds the market value of some of America's biggest companies including Home Depot ($412 billion), Procter & Gamble ($402 billion), and Netflix ($396 billion).

Abu Dhabi's ruling family, the Al Nahyans, topped the ranking last year with an estimated $305 billion fortune that dwarfed the Waltons' $260 billion. The two clans switched places this year with the Al Nahyans now worth $324 billion, more than $100 billion less than the Waltons.

Qatar's ruling dynasty, the Al Thanis, placed third this year with $173 billion to their name. France's Hermès family, which includes the Birkin maker's artistic director and executive chairman, landed in fourth with $171 billion. Rounding out the top five were the Kochs, the legendary US industrialists worth an estimated $149 billion.

The richest families on the planet also include Saudi Arabia's rulers, candy dynasties Mars and Ferrero, and the Wertheimer family behind Chanel.

Family fortunes

Walmart founder Sam Walton's three surviving children — Jim, Rob, and Alice — have each grown about $43 billion richer this year, per the Bloomberg Billionaires Index.

The trio joined the $100 billion club in September and ranked among the 15 richest people on the planet as of December 12 with north of $112 billion to each of their names.

Lukas and Christy Walton, the son and widow of Sam's late son, John T. Walton, also feature on Bloomberg's rich list with net worths of about $40 billion and $18 billion each.

The five Waltons' combined fortune has ballooned by more than $150 billion this year, representing a big chunk of the 25 richest families' total wealth gain of $407 billion.

The Walton family's wealth bump has been fueled by a roughly 80% surge in the retailer's stock price this year. Sam Walton gave each of his four children a 20% stake in the family enterprise early on, and his three surviving kids each own upward of 11% of Walmart — now a company valued north of $750 billion — through a family trust. They've also raked in more than $15 billion from stock sales and dividends over the years, Bloomberg says.

• Elon Musk is almost $200 billion richer than Jeff Bezos and worth more than Costco.
• His net worth hit $447 billion after Tesla stock jumped and SpaceX's valuation rose to $350 billion.
• Just five years ago, Musk was worth about $25 billion, and Tesla was valued below $100 billion.

Elon Musk is nearly $200 billion richer than Jeff Bezos, and personally worth more than Costco, after adding $63 billion to his fortune in a single day.

His net worth surged to $447 billion on Wednesday, per the Bloomberg Billionaires Index, after Tesla stock jumped 6% and SpaceX's valuation leaped to $350 billion based on employee share sales.

Musk's fortune has ballooned by $218 billion this year — a sum that exceeds the net worth of every other person on the rich list except Amazon's Bezos ($249 billion) and Meta's Mark Zuckerberg ($224 billion).

Musk is now more than twice as wealthy as Oracle's Larry Ellison ($198 billion), and more than three times as rich as Warren Buffett ($144 billion).

His one-day gain — the largest in the index's history — rivals the total wealth of Binance cofounder Changpeng Zhao, ranked 23rd with a $63.2 billion fortune. It also helped to lift the combined wealth of the 500 richest people on the planet to above $10 trillion for the first time, Bloomberg said.

Musk is now worth more on paper than the vast majority of US public companies, including Costco ($442 billion), Home Depot ($419 billion), and Netflix ($400 billion).

His wealth is largely made up of his roughly 13% stake and some contested stock options in Tesla, and his 42% slice of SpaceX. Musk's other businesses include xAI, Neuralink, The Boring Company, and X Corp, formerly Twitter.

Tesla shares have surged more than 70% this year to $425 at Wednesday's close, valuing the company at nearly $1.4 trillion. That figure comfortably exceeds the roughly $1 trillion market value of Buffett's Berkshire Hathaway and approaches the $1.6 trillion value of Zuckerberg's Meta.

The electric vehicle maker's shares have soared as investors bet it will harness artificial intelligence in revolutionary products such as self-driving cars and humanoid robots.

Musk's prominent role in Donald Trump's campaign, and his emergence as a close advisor to the president-elect who's tasked him with streamlining the US government, have also fueled optimism around his companies.

SpaceX is now valued at $350 billion based on the latest price paid by the company and its backers to buy shares from employees, Bloomberg reported Wednesday. The Starlink owner's valuation was previously $210 billion after a secondary share sale in June.

It's worth underscoring how dramatic Musk's wealth jump has been. He was worth less than $170 billion as recently as April, and only about $25 billion five years ago — around 1/18 of his net worth now.

Tesla was worth less than $100 billion during the Covid crash of 2020, or about 1/14 of its valuation today.

• The billionaire Jared Isaacman said his Polaris missions with SpaceX are "a question mark" now.
• Donald Trump nominated Isaacman for NASA Administrator months after he did SpaceX's first spacewalk.
• Space experts doubt Isaacman will fly during his NASA term, due to job demands and safety risks.

SpaceX and its go-to billionaire-turned-private-astronaut seem to be going their separate ways, at least for the next four years.

Jared Isaacman has flown two SpaceX missions to space and is slated to fly two more.

However, Isaacman may no longer fly those missions now that President-elect Donald Trump has tapped him to lead NASA.

Isaacman is the founder and CEO of a payments-processing company called Shift4, but he's more famous for conducting the world's first commercial spacewalk in September.

The spacewalk was the main feature of the first mission of the Polaris Program, which Isaacman started in partnership with SpaceX to supercharge the company's human-spaceflight capabilities as it aims for the moon and Mars.

The program is scheduled to fly two future missions, including the first human flight aboard SpaceX's Starship mega-rocket.

Isaacman has previously indicated that he would be on board that flight. It would be a crucial step in Elon Musk's plans to establish a human settlement on Mars using Starship.

The NASA nomination throws that mission into uncertainty, Isaacman acknowledged on Wednesday.

"The future of the Polaris program is a little bit of a question mark at the moment. It may wind up on hold for a moment," Isaacman said at the Spacepower 2024 conference in Orlando, according to Reuters.

Indeed, shortly after his nomination, experts told Business Insider that it was unlikely Isaacman would fly to space during his term as NASA Administrator.

"Well, it certainly has never happened before," John Logsdon, the founder of the Space Policy Institute at George Washington University, told BI.

That doesn't mean it can't happen, but Logsdon added, "NASA Administrator is a full-time, high-level government job. Taking time off to train for and carry out another spaceflight seems to me to be a little implausible."

If Isaacman wanted to fly a SpaceX mission during his NASA term, "that would take some thought on his part and the rest of the team," George Nield, a former head of the FAA's office of commercial space transportation, told BI. "What's the risk, what's the benefit, what happens if there's a bad day, and are there succession plans?"

Nield co-authored a 2020 analysis which calculated that US spaceflight has a 1% fatal failure rate, because four out of nearly 400 spaceflights have ended in deadly malfunctions. That's a rate 10,000 times greater than commercial airliners.

The US Senate has to confirm Isaacman's nomination before he can take office.

"Having the boss of the enterprise take the risk of spaceflight would be unusual, but we live in unusual times," Logsdon said.

• Billionaires are relocating more since the COVID-19 pandemic, per a report from Swiss bank UBS.
• UBS said that Switzerland, the UAE, Singapore, and the United States are popular destinations.
• "The shock of the pandemic put a premium on first-class healthcare," UBS wrote.

Billionaires have increased the frequency at which they are relocating overseas since the COVID-19 pandemic struck, the annual Billionaire Ambitions Report from UBS says.

The Swiss banking giant's report, which tracks sentiment among the world's superrich, found that since 2020, 176 billionaires have relocated around the world. With a global population of 2,682 as of April 2024, this represents around one in 15 billionaires, or roughly 6.5%.

The outflow of billionaires between 2020 and 2024 was most pronounced in Eastern Europe, where there was a net outflow of 29 billionaires, likely reflecting ultrarich citizens leaving the region amid the conflict between Russia and Ukraine.

Central and South America, Oceania, and Southeast Asia also saw net outflows of billionaires, UBS said.

Meanwhile, billionaires have been moving to countries including Switzerland, the UAE, Singapore, and the United States.

The Middle East and Africa region has also attracted new billionaires, with individuals with a combined net worth of over $400 billion moving to the region in the past four years.

UBS notes that one driving factor behind the superrich relocating is the increased value of good healthcare in the post-pandemic world.

"The shock of the pandemic put a premium on first-class healthcare," the report's authors wrote.

"As a group, billionaires are ageing, and their families are growing. Naturally, healthcare and education become more important."

Another driver, UBS said, is moving to "jurisdictions where legal structures support wealth transfer."

In other words, living in a place where the transfer of wealth through inheritance and other means is not subject to high levels of taxation.

"People are relocating to jurisdictions not just for tax benefits, but also for safety and political reasons," one American billionaire told the authors of the survey.

"I moved several years ago with my family to a country, state and city that affords the benefits most seek," the unnamed billionaire added.

"Unless the political divide addresses failed policies that have yet to curb crime, lack of rule of law and safety, as well as fostering an economic climate that unleashes potential, I fear the trend will continue."

Billionaires also value locations that support business — especially with geopolitical tensions remaining elevated globally, the report said.

According to UBS, total billionaire wealth rose by 121% worldwide from $6.3 trillion to $14 trillion between 2015 and 2024. At the same time, the number of billionaires grew from 1,757 to 2,682. This number peaked in 2021, when there were 2,686 — and has flatlined since.

• Berkshire Hathaway CEO and chairman Warren Buffett's net worth is an estimated $146 billion.
• He's the world's 10th-richest person, per Bloomberg, above Sergey Brin and the Walton siblings.
• Buffett is known for living modestly and being one of the world's most generous philanthropists.

Warren Buffett is having a good year — his fortune has ballooned by around $26 billion.

With an estimated net worth of $146 billion, according to the Bloomberg Billionaires Index, the 94-year-old Berkshire Hathaway chairman and CEO is the 10th-wealthiest person in the world. He's almost $20 billion richer than Nvidia CEO Jensen Huang, and worth considerably more than Michael Dell and any of the three Walton heirs, for example.

Looking at Buffett's frugal ways, though, you might not know it.

Still living in the house he bought in the 1950s and driving an equally modest car, the "Oracle of Omaha" prefers to keep and grow his money rather than take it out of the bank. He often eats breakfast from McDonald's and borrowed furniture when his children were born.

See how Buffett spends — or doesn't spend — his billions.

Buffett's hobbies include bridge, golf, and playing the ukulele.

Buffett loves playing bridge, sometimes playing for over 8 hours a week, the Washington Post reported. He also likes to hit the green for some golf, spends a great deal of his time reading, and loves to play the ukulele — he said in 2020 that he has a collection of 22 ukuleles. He's played the ukulele since he was young and used his skills to court his first wife Susan, their son Peter once told NPR.

Buffett once bought and donated 17 Hilo ukuleles to the North Omaha branch of the nonprofit Girls Inc, and showed up at the group's building to give a group lesson.

His fortune is largely tied to his investment company.

The vast majority of Buffett's net worth is tied to Berkshire Hathaway, his publicly traded conglomerate that owns businesses like Geico and See's Candies and holds multibillion-dollar stakes in companies like Apple and Coca-Cola.

Buffett owns about 15% of Berkshire — a stake valued at over $130 billion.

Berkshire Hathaway itself has assets worth more than $1 trillion.

Buffett began investing at a young age.

The CEO of Berkshire Hathaway began building his wealth by investing in the stock market at age 11, according to Forbes, and first filed a tax return at the age of 13.

As a teenager, he was raking in about $175 a month by delivering The Washington Post — more than his teachers (and most adults). Berkshire Hathaway later owned nearly 30% of the newspaper for 40 years until shedding the stake in 2014.

He also sold calendars, used golf balls, and stamps. He had amassed the equivalent of $53,000 by the time he was just 16.

Most of Buffett's fortune was built later in life.

The vast majority of Buffett's wealth was earned after his 50th birthday. His salary at Berkshire Hathaway last year was just $100,000, the same as it's been the last 40 years, and he reimbursed the company $50,000 in part to cover his personal calls and postage.

The company spent triple Buffett's yearly salary — $313,595 — on his personal and home security last year, according to the company's proxy statement.

Buffett's worst investment was a Sinclair gas station.

Buffett's greatest investment mistake is said to be a Sinclair gas station that he bought in 1951 at the age of 21 — he bought a stake in the station with a friend, and the business was consistently outsold by the larger Texaco station opposite it.

He eventually lost the $2,000 he invested out of his total net wealth of $10,000 at the time, Yahoo Finance reported, referencing Glen Arnold's book "The Deals of Warren Buffett, Volume 1: The First $100M." 

 

Buffett has been married twice and has three children.

Buffett married his first wife, Susan Buffett, in 1952. Together they had three children: Susie, Howard, and Peter. Though he and Susan remained married until Susan's death in 2004, they had lived apart since the 1970s. He married his second wife and longtime companion, Astrid Menks, in 2006.

When Susie was born, Buffett apparently turned a dresser drawer into a bassinet for her to sleep in, according to Roger Lowenstein's 2008 biography of the billionaire. For his second child, Howard, he borrowed a crib.

Buffett lives a modest lifestyle.

Despite his multibillionaire status, Buffett has long lived a relatively modest and frugal lifestyle. He previously told CNBC and Yahoo Finance's "Off the Cuff" that he's "never had any great desire to have multiple houses and all kinds of things and multiple cars."

Buffett lives in the same home he bought in the 1950s in Omaha, Nebraska.

Buffett lives in a modest home in Omaha, Nebraska, which he once called the "third-best investment" he's ever made in a letter to Berkshire shareholders.

He bought the home for $31,500 in 1958 — adjusted for inflation, that's about $342,000. It's now worth an estimated $1.4 million, according to Zillow, and spans 6,280 square feet with five bedrooms and 2.5 bathrooms.

Buffett has made some security upgrades since buying it and it's now guarded by fences and security cameras.

Buffett used to own a vacation home in California.

In 1971, Buffett purchased a vacation home in Laguna Beach, California, for $150,000. Part of a gated community called Emerald Bay, the house has six bedrooms, is walking distance from the beach, and was renovated after Buffett bought it. 

He initially put it on the market in early 2017 for $11 million, then cut the price down to $3 million later that year. It sold in October 2018 for $7.5 million, after almost two years on the market. 

Buffett's choice of vehicle has also long been modest.

Unlike many other ultra-wealthy individuals, Buffett has long driven a fairly modest set of wheels.

He previously drove a 2001 Lincoln Town Car with a license plate that read "THRIFTY" for about a decade, before auctioning it off for charity and replacing it with a 2006 Cadillac DTS. In 2014, he replaced the DTS with a Cadillac XTS, according to Forbes.

"The truth is, I only drive about 3,500 miles a year so I will buy a new car very infrequently," Buffett once told Forbes.

Buffett has splurged on a private jet.

One splurge Buffett has made is on a private jet. Buffett spent $850,000 on a used Falcon 20 jet in 1986, then sold the first jet and upgraded to a different used jet in 1989, spending $6.7 million.

He and his late business partner Charlie Munger nicknamed the second jet "The Indefensible," Buffett revealed in a letter to shareholders.

Buffett used a flip phone for years.

Despite the fact that Berkshire Hathaway is a major Apple shareholder, Buffett didn't upgrade to a smartphone until 2020.

Before that he preferred the Samsung SCH-U320, which can be bought on eBay for under $20.

Though Buffett did make the switch to an iPhone eventually, he told CNBC that he just uses it "as a phone."

Buffett's style includes suits from a Chinese designer and affordable haircuts.

Buffett has said he has about 20 suits, all made in China by designer Madame Li, according to CNBC.

He has a longstanding friendship with Li, an entrepreneur who worked her way up in the business. Buffett's gotten the same $18 hair cut for years from a barber shop in the same building as his office.

Buffett regularly eats at McDonald's and drinks a lot of Coke.

Buffett once told Fortune that he eats "like a six-year-old." He gets his breakfast at McDonald's almost every morning on the way to work.

In 2017, he was spending no more than $3.17 on his order, paying with exact change, he said in the HBO documentary "Becoming Warren Buffett." He also drinks at least five Cokes a day.

 

Buffett is longtime friends with Bill Gates.

Buffett once went to McDonald's in Hong Kong with longtime friend Bill Gates and paid with coupons, Gates reminisced in his 2017 annual letter.

The letter reads: "Remember the laugh we had when we traveled together to Hong Kong and decided to get lunch at McDonald's? You offered to pay, dug into your pocket, and pulled out …coupons!"

Gates has described Buffett as a "thoughtful and kind" friend, and has said that every time he visits Omaha, Buffett drives to the airport to pick him up.

Buffett is one of the world's most generous philanthropists.

Warren Buffett is considered one of the world's most generous philanthropists. He pledged in 2006 to donate about 85% of his Berkshire Class A shares to five foundations: the Bill & Melinda Gates Foundation, the Susan Thompson Buffett Foundation (named after his late wife), and three foundations run by his three children.

He teamed up with Bill and Melinda Gates in 2010 to form The Giving Pledge, an initiative that asks the world's wealthiest people to dedicate the majority of their wealth to philanthropy. Buffett himself has pledged that 99% of his wealth will go to philanthropy during his lifetime or upon his death.

As of 2023, the shares he's already given away were worth about $50 billion based on their value at the time of donation, or about $130 billion given Berkshire Hathaway's stock value at the time. If Buffett had kept those shares rather than donating them, he'd likely be the world's wealthiest person with a net worth of nearly $300 billion.

Buffett plans on leaving his kids $2 billion each, the Washington Post reported in 2014. He once said in a letter to shareholders that he recommends that super-wealthy families "leave the children enough so that they can do anything but not enough that they can do nothing."

Even for Buffett, there are things that money can't buy.

"There are things money can't buy," Buffett once said at a shareholders' meeting. "I don't think standard of living equates with cost of living beyond a certain point. My life couldn't be happier. In fact, it'd be worse if I had six or eight houses. So, I have everything I need to have, and I don't need any more because it doesn't make a difference after a point."

• Bill Gates, the Microsoft cofounder, shares three kids with his ex-wife Melinda French Gates.
• They include a recent med school graduate and a fashion startup cofounder.
• Here's what we know about the children of one of the world's richest men.

Bill Gates' story is a quintessential example of the American entrepreneurial dream: A brilliant math whiz, Gates was 19 when he dropped out of Harvard and cofounded Microsoft with his friend Paul Allen in 1975.

 Nearly 50 years later, Gates' net worth of $131 billion makes him one of the richest and most famous men on Earth, per Forbes. He stepped down from Microsoft's board in 2020 and has cultivated his brand of philanthropy with the Gates Foundation — a venture he formerly ran with his now ex-wife Melinda French Gates, who resigned in May. 

Even before founding one of the world's most valuable companies, Gates' life was anything but ordinary. He grew up in a well-off and well-connected family, surrounded by his parents' rarefied personal and professional network. Their circle included a Cabinet secretary and a governor of Washington, according to "Hard Drive," the 1992 biography of Gates by James Wallace and Jim Erickson. (Brock Adams, who went on to become the transportation secretary in the Carter administration, is said to have introduced Gates' parents.)

His father, William Gates Sr., was a prominent corporate lawyer in Seattle and the president of the Washington State Bar Association.

His mother, Mary Gates, came from a line of successful bankers and sat on the boards of important financial and social institutions, including the nonprofit United Way. It was there, according to her New York Times obituary, that she met the former IBM chairman John Opel — a fateful connection thought to have led to IBM enlisting Microsoft to provide an operating system in the 1980s.

"My parents were well off — my dad did well as a lawyer, took us on great trips, we had a really nice house," Gates said in the 2019 Netflix documentary "Inside Bill's Brain."

"And I've had so much luck in terms of all these opportunities."

Despite his very public life, his three children with French Gates — Jennifer, Rory, and Phoebe — largely avoided the spotlight for most of their upbringing. 

Like their father, the three Gates children attended Seattle's elite Lakeside School, a private high school that has been recognized for excellence in STEM subjects — and that received a $40 million donation from Bill Gates in 2005 to build its financial aid fund. (Bill Gates and Paul Allen met at Lakeside and went on to build Microsoft together.)

But as they have become adults, more details have emerged about their interests, professions, and family life. 

While they have chosen different career paths, all three children are active in philanthropy — a space in which they will likely wield immense influence as they grow older. While Gates has reportedly said that he plans to leave each of his three children $10 million — a fraction of his fortune — they may inherit the family foundation, where most of his money will go.

Here's all we know about the Gates children.

Gates and his children did not respond to requests for comment for this story.

Jennifer Gates Nassar

Jennifer Gates Nassar, who goes by Jenn, is the oldest of the Gates children at 28 years old.

A decorated equestrian, Gates Nassar started riding horses when she was six. Her father has shelled out millions of dollars to support her passion, including buying a California horse farm for $18 million and acquiring several parcels of land in Wellington, Florida, to build an equestrian facility.

In 2018, Gates Nassar received her undergraduate degree in human biology from Stanford University, where a computer science building was named for her father after he donated $6 million to the project in 1996.

She then attended the Icahn School of Medicine at Mount Sinai, from which she graduated in May. She will continue at Mt. Sinai for her residency in pediatric research. During medical school, she also completed a Master's in Public Health at Columbia University — perhaps a natural interest given her parents' extensive philanthropic activity in the space.

"Can't believe we've reached this moment, a little girl's childhood aspiration come true," she wrote on Instagram. "It's been a whirlwind of learning, exams, late nights, tears, discipline, and many moments of self-doubt, but the highs certainly outweighed the lows these past 5 years."

In October 2021, she married Egyptian equestrian Nayel Nassar. In February 2023, reports surfaced that they bought a $51 million New York City penthouse with six bedrooms and a plunge pool. The next month, they welcomed their first child, Leila, and in October, Gates Nassar gave birth to their second daughter, Mia.

"I'm over the moon for you, @jenngatesnassar and @nayelnassar—and overjoyed for our whole family," Bill Gates commented on the Instagram post announcing Mia's birth.

In a 2020 interview with the equestrian lifestyle publication Sidelines, Gates Nassar discussed growing up wealthy.

"I was born into a huge situation of privilege," she said. "I think it's about using those opportunities and learning from them to find things that I'm passionate about and hopefully make the world a little bit of a better place."

She recently posted about visiting Kenya, where she learned about childhood health and development in the country.

Rory John Gates

Rory John Gates, who is in his mid-20s, is Bill Gates and Melinda French Gates' only son and the most private of their children. He maintains private social media accounts, and his sisters and parents rarely post photos of him.

His mother did, however, write an essay about him in 2017. Titled "How I Raised a Feminist Son," she describes as a "great son and a great brother" who "inherited his parents' obsessive love of puzzles."

In 2022, he graduated from the University of Chicago, where, based on a photo posted on Facebook, he appears to have been active in moot court. At the time of his graduation, Jennifer Gates Nassar wrote that he had achieved a double major and master's degree.

Little is publicly known about what the middle Gates child has been up to since he graduated, but a Puck report from last year gave some clues, saying that he is seen as a "rich target for Democratic social-climbers, influence-peddlers, and all variety of money chasers." According to OpenSecrets, his most recent public giving was to Nikki Haley last year.

The same report says he works as a congressional analyst while also completing a doctorate.

Phoebe Gates

Phoebe Gates, 22, is the youngest of the Gates children.

After graduating from high school in 2021, she followed her sister to Stanford. She graduated in June after three years with a Bachelor of Science in Human Biology. Her mom, Melinda French-Gates, delivered the university's commencement address.

In a story that Gates wrote for Nylon about her graduation day, she documented her graduation day, including a party she cohosted that featured speeches from her famous parents and a piggyback ride from her boyfriend Arthur Donald — the grandson of Sir Paul McCartney.

She has long shown an interest in fashion, interning at British Vogue and posting on social media from fashion weeks in Copenhagen, New York, and Paris. Sustainability is often a theme of her content, which highlights vintage and secondhand stores and celebrates designers who don't use real leather and fur.

That has culminated in her cofounding Phia, a sustainable fashion tech platform that launched in beta this fall. The site and its browser extension crawl secondhand marketplaces to find specific items in an effort to help shoppers find deals and prevent waste.

Gates shares her parents' passion for public health. She's attended the UN General Assembly with her mother and spent time in Rwanda with Partners in Health, a nonprofit that has received funding from the Gates Foundation.

Like her mother, Gates often publicly discusses issues of gender equality, including in essays for Vogue and Teen Vogue, at philanthropic gatherings, and on social media, where she frequently posts about reproductive rights.

She's given thousands to Democrats and Democratic causes, including to Michigan governor Gretchen Whitmer and the Democratic Party of Montana, per data from OpenSecrets. According to Puck, she receives a "giving allowance" that makes it possible for her to cut the checks.

Perhaps the most public of the Gates children — she's got over 450,000 Instagram followers and a partnership with Tiffany & Co. — she's given glimpses into their upbringing, including strict rules around technology. The siblings were not allowed to use their phones before bed, she told Bustle, and to get around the rule, she created a cardboard decoy.

"I thought I could dupe my dad, and it worked, actually, for a couple nights," she told the outlet earlier this year. "And then my mom came home and was like, 'This is literally a piece of cardboard you're plugging in. You're using your phone in your room.' Oh, my gosh, I remember getting in trouble for that."

It hasn't always been easy being Gates's daughter. In the Netflix documentary "What's Next? The Future With Bill Gates," she said she lost friends because of a conspiracy theory suggesting her father used COVID-19 vaccines to implant microchips into recipients.

"I've even had friends cut me off because of these vaccine rumors," she said.

• Maye Musk commented on her son's friendship with Donald Trump in a Fox Business interview.
• Elon Musk and the president-elect are having "a lot of fun," she said.
• Maye Musk called her son "the genius of the world" and backed him to slash government waste.

Elon Musk and Donald Trump are two of the world's wealthiest and most powerful men. Musk helped Trump regain the White House and now wants to shake up the federal government.

Musk's mother, Maye, commented on their budding bromance in an interview on Fox Business this week: "They just seem to be having fun, a lot of fun, and that's nice for both of them to have fun."

Elon Musk, 53, is the CEO of Tesla and SpaceX and the richest man on the planet with a net worth close to $350 billion, per the Bloomberg Billionaires Index.

Trump, 78, is the president-elect of the world's biggest economy, a real-estate tycoon, reality TV star — and a convicted felon.

Elon "really respects him a lot and is really happy that there's a future for America now," Maye said.

The model and dietitian said she's only briefly seen the two men together as she lives in New York. The pair have been hanging out at Trump's Mar-a-Lago resort in Florida where Musk has joined calls with other world leaders and weighed in on cabinet picks. They also attended a SpaceX launch in Texas this month.

Many mothers champion their children and sing their praises, and Maye is no exception. She echoed her son's scathing criticism of the "dishonest Democrat media," and said they would be "trying to break up the relationship" between him and the incoming president.

Maye said that calling Elon "wealthy" or a "billionaire" was "degrading," and she thinks of him as "the genius of the world."

She also predicted that, as the co-chief of a new Department of Government Efficiency, he would easily eliminate government waste. Just as he did at Twitter, now X, he would mandate workers return to the office and fire employees who fail to point out anything worthwhile they've done in the past week, May added.

Elon is clearly close to his mother. He's posted pictures of them, sent her heart emojis on X, taken her to several high-profile events, and brought her on during his opening monologue when hosting "Saturday Night Live" in 2021.

Similarly, Maye has shared childhood photos of Musk and repeatedly said how proud she is of him.

• Warren Buffett said he would gift Berkshire stock worth $1.2 billion to family foundations.
• The investor also wrote a mini letter to shareholders running to almost 1,500 words.
• Buffett spoke about his estate planning, his children, his luck in life, and philanthropy.

Warren Buffett surprised shareholders on Monday with a near-1,500-word letter alongside his usual Thanksgiving gift to four of his family's foundations.

The famed investor and Berkshire Hathaway CEO said he would shortly convert 1,600 of his Class A shares into 2.4 million Class B shares, worth about $1.2 billion.

He pledged to distribute 1.5 million of those shares to The Susan Thompson Buffett Foundation — named after his late wife — and 300,000 shares to each of his three kids' foundations: The Sherwood Foundation, The Howard G. Buffett Foundation, and NoVo Foundation.

Buffett picked more trustees to share his wealth

In his unexpected missive to Berkshire shareholders, Buffett said the gifts would reduce his personal stockpile to 206,363 A shares, worth $149 billion. He's now given away 56.6% of his shares since pledging 99% of them to good causes in 2006.

The "Oracle of Omaha" said he and his late wife owned 508,998 A shares at the time of her death in 2004.

All else being equal, if Buffett still owned all those shares they'd be worth $367 billion, making him the world's richest man and wealthier than Elon Musk, who's worth $348 billion per the Bloomberg Billionaires Index.

Buffett said his late wife's estate was worth about $3 billion, and 96% of that went into the pair's foundation. She bequeathed $10 million to their three children — Howard, Susie, and Peter — which was "the first large gift we had given to any of them," he said.

"These bequests reflected our belief that hugely wealthy parents should leave their children enough so they can do anything but not enough that they can do nothing," Buffett wrote.

The legendary stock picker reiterated his comments earlier this year that he now believes his kids are ready to handle the vast responsibility of distributing his Berkshire shares, which make up 99.5% of his wealth.

But he acknowledged that his children, now in their late 60s and early 70s, might be unable to deploy his fortune before they die. "And tomorrow's decisions are likely to be better made by three live and well-directed brains than by a dead hand," Buffett wrote.

"As such, three potential successor trustees have been designated. Each is well known to my children and makes sense to all of us. They are also somewhat younger than my children," Buffett said, adding those individuals are "on the waitlist" and he hoped his children disbursed all his assets.

The reality of philanthropy

Buffett explained why the foundation that holds his wealth after he dies will require a unanimous vote for every action it takes. The investor said his children will be inundated by requests and the policy will help ensure the money is used wisely. Also, when one says "no" to a request for a gift, they can prevent follow-up asks by firmly saying their siblings would never approve it.

The billionaire also offered some advice on passing down wealth.

"I have one further suggestion for all parents, whether they are of modest or staggering wealth," he said. "When your children are mature, have them read your will before you sign it."

Involving them in the process will ensure they understand your logic and their post-mortem responsibilities, Buffett said.

Spreading the luck

In the letter — which was curt compared to Buffett's famous annual letter, which ran over 6,000 words this year and has previously exceeded 13,000 words — Buffett reflected on how lucky he was to be born in the US as a white male. He noted that his two sisters, Doris and Bertie, grew up with fewer opportunities than him.

Buffett said he felt confident he'd be rich early in his life, but he never dreamed of the wealth that has become attainable in the US in recent decades.

"It has been mind-blowing — beyond the imaginations of Ford, Carnegie, Morgan or even Rockefeller," he said. "Billions became the new millions."

Buffett said that "the real action from compounding takes place in the final twenty years of a lifetime. By not stepping on any banana peels, I now remain in circulation at 94 with huge sums in savings — call these units of deferred consumption — that can be passed along to others who were given a very short straw at birth."

The investor said he and both his wives believed in equal opportunity at birth and didn't find conspicuous consumption to be "admirable," and he was pleased so many of his shareholders have gifted their wealth to society.

Buffett added that his children shared his and his siblings' values and while they're "comfortable financially," they're not "preoccupied by wealth. Their mother, from whom they learned these values, would be very proud of them. As am I."

• The world's 10 biggest wealth gainers have grown $790 billion richer in 2024.
• Elon Musk leads the list with a $257 billion gain that has boosted his net worth to $486 billion.
• Mark Zuckerberg, Jeff Bezos, Larry Ellison, and Jensen Huang are all up more than $70 billion.

Ten people have grown their personal fortunes by a combined $790 billion this year — a figure larger than the market value of Walmart ($767 billion).

The biggest wealth gainers of 2024 include Tesla CEO Elon Musk, Meta CEO Mark Zuckerberg, Amazon chairman Jeff Bezos, Oracle chairman Larry Ellison, and Nvidia CEO Jensen Huang, according to the Bloomberg Billionaires Index.

The buzz around artificial intelligence, a solid outlook for the US economy, and market expectations about Donald Trump's second term in office have boosted their companies' stock prices, benefiting them as major shareholders.

Here are the 10 greatest wealth builders this year as of the market close on Tuesday, December 17.

1. Elon Musk

Year-to-date wealth gain: $257 billion

Net worth: $486 billion

Source of wealth gain: Tesla and SpaceX stock

Elon Musk is the CEO of automaker Tesla and spacecraft manufacturer SpaceX. He's also the owner of X, the social network previously known as Twitter, along with Neuralink, xAI, and The Boring Company.

Musk's $257 billion wealth gain this year exceeds the total net worth of Jeff Bezos, the second-richest person on the planet. The serial entrepreneur could soon become the first individual to amass a $500 billion fortune.

2. Mark Zuckerberg

Year-to-date wealth gain: $90.9 billion

Net worth: $219 billion

Source of wealth gain: Meta stock

Mark Zuckerberg is the cofounder and CEO of Meta, the parent company of Facebook, Instagram, WhatsApp, and Threads.

Meta stock has soared 75% this year as investors wager Zuckerberg's big bets on AI and the metaverse will pay off in the years ahead. Zuckerberg has added about $90 billion to his net worth as a result, propelling him into third place on Bloomberg's rich list.

3. Jeff Bezos

Year-to-date wealth gain: $72.9 billion

Net worth: $250 billion

Source of wealth gain: Amazon stock

Jeff Bezos is Amazon's founder, executive chairman, and former CEO.

Amazon shares have leaped 52% this year as investors bet the online retailer can harness AI to supercharge its sales and leverage Amazon Web Services to become a key provider of cloud infrastructure to AI companies.

4. Larry Ellison

Year-to-date wealth gain: $70.4 billion

Net worth: $193 billion

Source of wealth gain: Oracle and Tesla stock

Larry Ellison is the cofounder, executive chairman, and chief technology officer of Oracle, one of the largest enterprise software companies.

Oracle stock has jumped 61% this year as the company has emerged as a key provider of cloud data centers for AI businesses, fueling a $70 billion increase in Ellison's net worth.

Ellison purchased more than 1.5% of Tesla prior to joining its board in December 2018, making him the electric-vehicle maker's second-largest individual shareholder after Musk. He's believed to have retained his stake, now worth upward of $20 billion, since resigning as a director in 2022.

5. Jensen Huang

Year-to-date wealth gain: $70 billion

Net worth: $114 billion

Source of wealth gain: Nvidia stock

Jensen Huang is the founder and CEO of Nvidia, the graphics chip maker that has emerged as a critical seller of "picks and shovels" to the AI gold rush.

Nvidia's stock has surged 163% this year, making it one of the world's most valuable companies with a $3.2 trillion market value and lifting Huang's net worth by $70 billion.

6. Michael Dell

Year-to-date wealth gain: $48.9 billion

Net worth: $127 billion

Source of wealth gain: Dell Technologies stock

Michael Dell is the founder and CEO of Dell Technologies, the maker of PCs, printers, and other computing equipment.

Dell shares have soared 55% this year as the company has shifted its focus toward AI-powered devices and servers.

7. Larry Page

Year-to-date wealth gain: $47.4 billion

Net worth: $174 billion

Source of wealth gain: Alphabet stock

Larry Page cofounded Google in 1998 and was the company's CEO until 2001 and again between 2011 and 2015 after Google was restructured as a subsidiary of Alphabet.

Alphabet shares have surged 40% this year as investors wager the search-and-advertising titan can dominate AI. The stock jump has fueled a $47 billion rise in Page's net worth.

8. Jim Walton

Year-to-date wealth gain: $45.1 billion

Net worth: $118 billion

Source of wealth gain: Walmart stock

Jim Walton is the youngest son of Walmart founder Sam Walton and, like his siblings, one of the retailer's largest shareholders with an 11%-plus stake.

Walmart stock has climbed 82% this year, fueled by resilient consumer spending in the face of historic inflation and soaring interest rates in recent years. The surge led to Walton amassing a $100 billion fortune for the first time in September.

9. Alice Walton

Year-to-date wealth gain: $44.4 billion

Net worth: $114 billion

Source of wealth gain: Walmart stock

Alice Walton is the only daughter of Walmart founder Sam Walton.

She overtook L'Oréal heiress Françoise Bettencourt Meyers in August to become the world's richest woman.

10. Rob Walton

Year-to-date wealth gain: $43.8 billion

Net worth: $115 billion

Source of wealth gain: Walmart stock

Rob Walton is the eldest son of Sam Walton and an heir to the Walmart fortune.

He and his siblings owe a big chunk of their wealth to their father, who handed them each a 20% stake in the family business over 70 years ago instead of having them inherit his fortune upon his death, in turn avoiding paying billions of dollars in estate taxes.

• The profile of the typical billionaire isn't all that surprising.
• Most of the world's billionaires are men, and the largest share work in finance or banking.
• Here's a breakdown of the billionaire class, according to a new report.

If you're looking for a billionaire, you might as well be looking for a man in finance, trust fund, 6'5", blue eyes.

Well, not exactly, but the typical member of the three-comma club isn't that different from the stereotype.

The typical billionaire is a man in his 60s, who lives in New York City, loves sports, and works in banking or finance, according to Altrata's 2024 Billionaire Census, which looked at the world's richest citizens as of 2023. Most of his wealth is probably tied up in public companies, though he also has a penchant for private jets, luxury yachts, and valuable cars. He is also, unlike the man in the TikTok jingle, self-made.

There are more billionaires than ever in the world, a total of 3,323. Their cumulative net worth is $12.1 trillion, up 9% from last year thanks to a stock-market rebound.

The United States is home to nearly one third of them, the largest concentration of any country. New York City alone has 144 billionaire inhabitants — more than any country besides the US, China, and Germany.

Most — 87% — of billionaires are male, and have amassed their fortunes in different ways than the world's 431 female billionaires.

While the majority of all billionaires, about 60%, are fully self-made, men are more likely to be than female billionaires. In fact, 76% of the world's female billionaires have inherited at least part of their wealth, compared to 35% of male ones.

Male billionaires are more likely to have public assets make up the largest share, or about 40%, of their wealth. Male tech billionaires whose fortunes are tied up in the companies they control or founded — like Elon Musk and Jeff Bezos — skewed that number, according to the report.

Meanwhile, liquid assets, like cash and private holdings, are the largest asset classes for women. Both are more typically tied to inherited fortunes, Altrata found.

The largest share of all billionaires, about 22%, work in finance or banking, but the largest portion, about 17%, of female billionaires spend most of their professional time in the nonprofit sector.

The interests of male and female billionaires follow suit: 71% of women billionaires count philanthropy as a top interest, while sports was the most popular one for male billionaires. Among all billionaires, the top philanthropic cause was education, which includes gifts to alma maters — an especially popular form of giving in the US.

Billionaires are also more likely to splurge on different high-value items depending on their gender. Men prefer luxury vehicles — jets, yachts, cars — while women prefer property and art. In fact, male billionaires are almost four times as likely to own a car collection worth more than $1 million than their female counterparts.

So, if you are looking for a man or woman, finance isn't a bad place to start. Failing that, why not try a gala or classic car show? We'll leave the choice of eye color up to you.

• Elon Musk's net worth keeps rising.
• Musk's net worth topped $400 billion on Wednesday, making him the first person to reach that mark.
• The billionaire had already gotten $155 billion richer this year, fueled by a rise in Tesla shares.

Elon Musk just keeps getting richer. And now, he's the first-ever person to hit the $400 billion mark.

The Tesla and SpaceX CEO's net worth skyrocketed to $439.2 billion on Wednesday — an increase of about $50 billion in just one day, according to Bloomberg figures.

The jump comes after an insider share sale at SpaceX boosted the space exploration company to a $350 billion valuation, making it the most valuable private startup in the world. Musk is believed to own about 42% of the firm, NBC News reported.

Prior to the massive boost on Wednesday, Musk's net worth had already soared by an unmatched $155 billion this year, placing him at $384 billion as of market close on Tuesday, according to the Bloomberg Billionaires Index.

The index, which has not yet been publicly updated to reflect the latest jump, on Tuesday showed Musk $140 billion ahead of the world's second richest person, Amazon founder Jeff Bezos, who's worth $244 billion.

The jump comes after the world's richest person broke his wealth record of about $340 billion in late November, which had stood for just over three years.

Musk's soaring wealth also piggybacks on the postelection rally for Tesla stock. Tesla's stock has soared nearly 71% so far this year. Its market cap is $1.23 trillion.

The stock has surged since Donald Trump's victory in the US presidential election, as investors wagered the electric vehicle maker would benefit from Musk's close ties to the president-elect.

Mark Malek, Siebert's chief investment officer, previously told BI that "some sort of premium has been placed on the stock as a result of Musk's very public involvement in Trump's campaign."

Tesla could continue to make further gains. Analysts at Bank of America said in a note last week that a recent visit to the Austin factory gave them "increased confidence that TSLA is well-positioned to grow in 2025+ with its core EV business … launch of its robotaxi offering, and longer-term from its investments in Optimus."

Tesla is now significantly more valuable than Warren Buffett's conglomerate, Berkshire Hathaway, which has a market cap of just under $1 trillion.

Musk has a stake of about 13% in Tesla. His latest $439.2 billion net worth is nearly $100 billion higher than the market cap of Salesforce, valued at $344 billion.

Earlier this month, a Delaware judge slapped down Musk's mega pay package from Tesla for the second time. The company said it will appeal the ruling.

Update: December 11, 2024 — This story was updated with Elon Musk's latest net worth, which topped $400 billion.

• On Wednesday, Gautam Adani was charged by US prosecutors in a massive bribery scheme.
• The charges have spurred an investor revolt and at least one customer to back out of major deals.
• Adani is the 2nd-richest person in India, behind Mukesh Ambani.

Gautam Adani, the second-richest person in India, is facing bribery charges in the US and business tumult globally.

Adani is the founder and chairman of the Adani Group, a multinational conglomerate with businesses spanning energy, mining, ports, and airports. The Adani Group owns India's largest commercial port and has a controlling stake in Mumbai's international airport.

On Wednesday, New York prosecutors said Adani executives paid hundreds of millions of dollars in bribes to the Indian government and hid them from US investors. The Adani Group called the allegations "baseless." 

The charges wiped out billions from Adani's and his brother's paper fortunes. Shares of companies related to Adani, including his flagship Adani Enterprises, Adani Green Energy, and Adani Ports and Special Economic Zone Ltd., crashed 20% in the first two hours of trade on Thursday, wiping out more than $30 billion.

The charges led to immediate business fallout. Following the news, Adani Green Energy canceled plans to raise $600 million in US dollar-denominated bonds, the company said in a statement to the National Stock Exchange of India. On Thursday, Kenya's president canceled deals with the Adani Group for its main airport and for power line construction. 

A short seller's report sent stocks down

The indictment isn't the first serious bout of trouble for Adani.

A 2023 report by Hindenburg Research, an investment-research firm and short seller, sent Adani's wealth on a downward spiral. In the report, which Hindenburg said took two years to compile, the short-seller accused the Adani Group of a "brazen stock manipulation and accounting fraud scheme." Adani companies' stocks tumbled but later recovered.

The Adani Group has said it was exploring legal action against Hindenburg and released a 413-page report which said that Hindenburg's claims were "nothing but a lie." It called Hindenburg's document a "malicious combination of selective misinformation and concealed facts relating to baseless and discredited allegations." 

Hindenburg criticized the group's response, saying it failed to address many of its questions.

Adani Group did not ultimately sue Hindenburg over the report.

From diamond sorter to tycoon

Adani was born in Ahmedabad, in the Indian state of Gujarat, in 1962. He dropped out of university after his second year studying commerce, according to Silicon India. He then turned to the diamond industry, first as a sorter and then as a trader in Mumbai.

After his brother purchased a plastic company, Adani started working with him and began importing PVC. In 1988, he set up Adani Enterprises.

Today, the Adani Group comprises 10 listed companies with a combined 46,000 employees.

The billionaire is a key ally of Prime Minister Narendra Modi, whose government has inked infrastructure and other deals with Adani's companies. Bloomberg deemed Modi "the foundation of the tycoon's empire."

• Elon Musk reignited his long-running feud with Jeff Bezos in an X post on Thursday.
• Musk said Bezos told people they should sell Tesla and SpaceX stock because Donald Trump would lose.
• Bezos said Musk's claim was "100% not true," to which Musk replied, "I stand corrected."

Elon Musk has taken aim at Jeff Bezos once more, reigniting the war of words between two of the world's richest people.

In an X post on Thursday, Musk said Bezos had told people to dump their shares in his companies because Donald Trump was bound to lose the presidential election.

Hours later, Bezos replied that the claim was "100% not true." That prompted Musk to write, "Well, then, I stand corrected," followed by a crying-with-laughter emoji.

Business Insider was unable to confirm the veracity of Musk's post.

Musk, the CEO of Tesla and SpaceX, spent more than $130 million supporting Trump's reelection bid. He stumped for Trump onstage at campaign rallies and warned on X that America would "fall to tyranny" if the former president wasn't reelected.

Since the election, Musk has been spending time at Mar-a-Lago, Trump's Florida resort, and has been appointed by the president-elect to co-lead a "Department of Government Efficiency" to reduce wasteful spending.

He said on X on Wednesday that he'd had little input on the president-elect's cabinet picks.

Musk's post about Bezos suggested that the Amazon founder and executive chairman expected Musk's close ties to Trump to mean Tesla and SpaceX would take a hit if Trump lost the election.

Tesla shares soared 44% between November 4 — the day before the election — and November 11, suggesting investors saw the automaker benefiting from a Trump win. SpaceX isn't publicly listed, but its shares are traded on private markets.

Tech and wealth rivals

Musk and Bezos are worth more than $500 billion combined, according to the Bloomberg Billionaires Index.

They hold leadership roles at Tesla and Amazon, two of the world's most valuable companies. They're rivals in areas such as artificial intelligence, electric vehicles, and self-driving cars, and they both run space companies that compete for government contracts.

As a result, any personal animosity that Musk holds toward Bezos could be significant. He's previously labeled Bezos a copycat, trolled him for being No. 2 on the rich list, complained about his lawsuits against SpaceX, and posted: "Time to break up Amazon. Monopolies are wrong!"

Thomas Roulet, a professor of organizational sociology and leadership at the University of Cambridge, told BI in an email: "We can definitely expect Elon Musk to exploit his proximity to the Trump administration, especially in areas where he faces direct competition from other tech firms and when regulations can make or break economic success — self-driving cars, for example."

"This message about Bezos is a way to give himself an excuse to legitimately do so, by saying that 'Bezos started it,'" Roulet added.

Bezos has voiced skepticism at Musk's vision of colonizing Mars and once suggested that Musk's takeover of Twitter, now X, could complicate things for Tesla in China.

Musk has clashed with other tech leaders, including Bill Gates. He took umbrage at the Microsoft cofounder for shorting Tesla stock, questioning why Gates would bet against a clean-energy company while ringing the alarm on the climate crisis.

Amazon, Tesla and representatives for Trump didn't respond to requests for comment.

November 22, 2024: This story has been updated to include Bezos' response to Musk's Thursday X post, and Musk's response to Bezos.