Warren Buffett’s Berkshire Hathaway has joined forces with some of the world’s richest individuals to bolster its stake in embattled health insurer UnitedHealth Group Inc. According to recent filings, these billionaire investors have increased their holdings in the company. Key players include George Soros’ family office and Michael Platt’s BlueCrest Capital Management.
Source: https://www.bloomberg.com/news/articles/2025-08-15/billionaire-family-offices-join-berkshire-in-unitedhealth-bet