Business

Tech’s biggest names sank a tax on billionaires’ wealth with $425m and a familiar playbook

Proposition 40 targeted Californian billionaires with a 5% tax on their total wealth, including assets such as shares as well as income.

✦ Extractive summary — built from the sources' own reporting•From 2 sources•1 min read•Updated November 10, 2026, 1:19 PM UTC
Key points
  • “Huge thanks to Sergey Brin here,” wrote Garry Tan, the CEO of Y Combinator.

California saw the most expensive opposition campaign in its history as funding of political campaigns broke records in the US midterms In the hours after polls closed on election day, tech industry players began praising Sergey Brin, the co-founder of Google, on social media.

How this summary was made: extractive summary — built from the sources' own reporting. It is drawn only from the reporting of the sources listed below — read the originals for full detail. How we summarize →

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