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UnitedHealth rises after Buffett stake

Berkshire Hathaway buys a stake in UnitedHealth, signaling confidence despite a DOJ probe.

August 15, 2025 at 07:17 PM
blur Why Warren Buffett And Other Billionaire Investors Are Piling Into UnitedHealth Stock

Warren Buffett’s Berkshire Hathaway buys a large stake in UnitedHealth as other big investors also bet on the stock, even with a federal investigation at the company.

Berkshire Bets on UnitedHealth Despite DOJ Scrutiny

Berkshire Hathaway disclosed a stake in UnitedHealth Group worth about $1.6 billion in the second quarter, stepping in as the stock has fallen sharply this year. The move comes after a year of earnings misses, higher costs and a leadership shift, plus a Department of Justice probe into Medicare billing. The shares jumped about 13 percent on the day the Berkshire filing surfaced, but the overall trend remains cautious as investors weigh legal risk against a still sizable health insurer operation.

The move was not isolated. Other top funds increased their exposure to UnitedHealth during the same quarter, and even smaller outfits joined the chorus, signaling a broader market shift toward buying the dip in a company with enduring scale. Industry tailwinds such as a 5.1 percent Medicare Advantage reimbursement increase expected next year provide a counterpoint to the bad headlines. Valuation remains a talking point, with the stock trading at roughly 13 times earnings, notably cheaper than peers such as Humana, Cigna, and CVS Health.

Key Takeaways

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Berkshire Hathaway acquired a $1.6 billion stake in UnitedHealth in Q2
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Other hedge funds bought new UnitedHealth shares, signaling broader investor interest
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UnitedHealth stock rose after the Berkshire disclosure amid a broader rebound
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DOJ investigation adds regulatory risk to the stock’s outlook
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Medicare Advantage reimbursements are set to rise, offering a tailwind
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Valuation remains relatively inexpensive versus peers like Humana and CVS Health
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Industry optimism hinges on whether the core business can weather regulatory pressure

"We think that most of their problems, if not all of them, are temporary in nature."

Marshfield Associates on UnitedHealth’s outlook

"There's no reason for us to believe that they won't get back to the kind of blocking and tackling that they've done historically."

Elise Hoffmann of Marshfield Associates on recovery prospects

"The healthcare industry is not short of examples of companies getting into trouble and paying big fines to the Justice Department."

Chris Niemczewski of Marshfield Associates on regulatory risk

"Their role is to ration care—and they've historically done it well—and the government is paying them for that role on the Medicare Advantage side."

Elise Hoffmann on Medicare Advantage dynamics

The Berkshire bet highlights a classic value play: buy when sentiment is bruised but the core business remains intact. Yet the legal overhang reminds readers that price and policy often move in opposite directions. UnitedHealth’s size matters here; as the nation’s largest Medicare Advantage provider, it faces scrutiny but also a powerful cushion if penalties are moderate. The particles of fear and opportunity collide as investors judge whether the DOJ inquiry will derail a long-run recovery or merely slow it. Market optimism may be stretched, but so is the potential for a rebound if the company maintains its operating discipline and the regulatory environment remains predictable.

Highlights

  • Patience is a loud bet in a crowded market
  • Scale can shorten the path from risk to return
  • Big names riding a dip can revive a stock faster than news
  • Markets forgive a probe when the core business proves durable

DOJ probe adds regulatory risk to UnitedHealth investment

A Department of Justice investigation into Medicare billing looms over UnitedHealth, potentially influencing penalties, guidance, or long-term strategy. While executives stress cooperation, the move keeps market scrutiny high and could invite backlash from some investors and policymakers.

The story will test whether big bets can outpace headlines in a market watching every regulatory move.

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