Warren Buffett's Berkshire Hathaway has acquired 5 million shares in UnitedHealth Group , a regulatory filing showed on Thursday, sending the health insurer's stock up 7% in extended trading.

Renaissance Technologies is often referred to as the most successful hedge fund of all time. From 1998 to 2021, the firm’s Medallion Fund generated annualized after-fees returns of 39%. Despite the company’s legendary leader,

Berkshire Hathaway invests $1.57B in UnitedHealth (UNH), boosting shares by 10.5%. Discover key insights on its challenges, outlook, and analyst ratings.

Berkshire Hathaway’s portfolio added six new stocks, including the three new secret stocks. Warren Buffett was a net seller of stocks for the eleventh straight quarter.

Berkshire Hathaway just disclosed that it dumped $1.6 billion into a sinking ship, and Wall Street instantly paid attention.

Warren Buffett's Berkshire Hathaway disclosed on Thursday a new investment in UnitedHealth Group after the insurer became a target for many Americans upset over the direction of the nation's healthcare.

See Berkshire Hathaway Inc.'s strategy with a big new stake in UnitedHealth. Learn how it's hedging against recession and stagflation. Click for my BRK.A update.

Warren Buffett’s Berkshire Hathaway (NYSE: BRK.B) just revealed its highly anticipated buys and sells of Q2 2025. Understandably, all the focus is on the Oracle of Omaha’s purchase of more than 5 million shares in UnitedHealth Group (NYSE: UNH).