Berkshire Hathaway, the investment conglomerate of legendary investor Warren Buffett, has surprised the financial world by disclosing the purchase of over five million shares of UnitedHealth Group, worth approximately $1.57 billion, according to filings with the U.S. Securities and Exchange Commission (SEC). This marks a notable return for Buffett to UnitedHealth stock since selling his entire stake of over 1.18 million shares back in 2010.
The news immediately created a strong market reaction, with UnitedHealth’s stock price surging between 7% and 9% in after-hours trading, despite the company navigating through a turbulent period.
UnitedHealth is currently facing an array of challenges, including escalating healthcare costs, a criminal investigation by the U.S. Department of Justice, a major cyberattack, and the shock of the assassination of former CEO Brian Thompson in late 2024. The company has had to suspend its annual profit forecast and warn of potential additional costs running into billions of dollars in the coming quarters. These issues have caused the company’s stock to plummet, losing nearly half its value since the start of the year.
In this context, Buffett’s investment decision is seen as a special signal, reminiscent of the “Buffett Effect” – where any of his investment moves are immediately interpreted by the market as a sign of confidence.
The new investment in UnitedHealth is part of Berkshire Hathaway’s portfolio restructuring in the second quarter of this year. During this period, the conglomerate also invested in other sectors such as real estate with D.R. Horton, steel with Nucor, outdoor advertising with Lamar Advertising, and security with Allegion. Simultaneously, Berkshire reduced its stake in Apple by over 20 million shares and sold its entire position in T-Mobile. Analysts interpret these moves as an effort to diversify the portfolio, reduce reliance on a handful of large tech stocks, and seize buying opportunities amid market volatility.

Notably, the UnitedHealth deal comes at a time when Berkshire is sitting on a massive cash pile of approximately $344 billion, allowing Buffett and his team the flexibility to invest in undervalued assets. This may be one of Buffett’s final investment decisions before his planned retirement at the end of 2025, concluding a career spanning over half a century and defined by his famous “buy when there’s blood in the streets” philosophy.
The choice to invest in UnitedHealth during the company’s crisis demonstrates Buffett’s adherence to his strategy of seeking out businesses with strong fundamentals that are temporarily out of favor with the market. Should UnitedHealth overcome its legal challenges and stabilize its operations, this investment could yield substantial long-term profits.
Investors understand that when Buffett invests, he has carefully considered the value and potential for recovery. In a volatile market, this decision sends a strong message of faith in UnitedHealth’s ability to rebound and underscores the steadfast approach that has made Warren Buffett a legendary investor.
Source: CNBC
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