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

The company may be under criminal investigation for alleged irregularities in its Medicare business—but it’s been touched by the Warren Buffett effect. Shares in the troubled private health insurer UnitedHealth Group (NYSE: UNH) are currently seeing their best trading day in months.

Warren Buffett’s Berkshire Hathaway (BRK.B) updated its portfolio for the second quarter of 2025, surprising investors with a new stake in UnitedHealth Group (UNH) while reducing its large holding in Apple (AAPL).

UnitedHealth (UNH) stock climbed 6.7% in Thursday afternoon trading after Warren Buffett's Berkshire Hathaway (BRK.B) (BRK.A) disclosed that it acquired a new stake in the health insurer during Q2 2025.

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

Warren Buffett has requested confidentiality in a new Berkshire Hathaway position. Will investors find out the stock Thursday?

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

Here are three of the stories Wall Street is watching on Friday, Aug. 15. Retail sales in July rose 0.5% from the month prior, slightly below the 0.6% economists polled by Bloomberg were expecting. US President Donald Trump and Russian President Vladimir Putin are meeting today in Alaska.