People watch as Berkshire Hathaway chairman Warren Buffett is seen on a screen speaking at the Berkshire Hathaway annual shareholders’ meeting in Omaha, Nebraska, on May 3, 2025.
Brendan McDermid | Reuters
Warren Buffett’sBerkshire Hathawayrevealed a new stake in troubled insurer UnitedHealth after secretly building the position for two quarters in a row, according to a regulatory filing.
The Omaha-based conglomerate bought more than 5 million shares in the health care firm for a stake worth about $1.6 billion at the end of June. The size is relatively small for Berkshire, whose equity portfolio is worth about $300 billion, so it could be the work of Buffett’s two investing lieutenants Todd Combs and Ted Weschler.
There was much speculation about the mystery position before Thursday with many guessing it would be a defense name. The confidential treatment allowed Berkshire to quietly build up a position and limit price movement without stoking volatility.
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