Berkshire Hathaway Acquires Significant Interest in Struggling Insurer UnitedHealth

In a move that surprised many, Warren Buffett’s investment giant disclosed that last quarter it acquired shares in UnitedHealth, a company currently facing challenges. Despite the insurer's recent difficulties, the purchase aligns with Buffett’s historical pursuit of undervalued opportunities.

The conglomerate, based in Omaha, amassed over 5 million shares of the healthcare entity, culminating in an investment valued at approximately $1.6 billion as of June's end. This acquisition places UnitedHealth as the 18th most significant interest within Berkshire Hathaway’s holdings, slightly trailing behind investments in Amazon and Constellation Brands.

Berkshire's expansive $300 billion stock portfolio suggests that Todd Combs and Ted Weschler, two of Buffett’s key investment managers, might have orchestrated this deal. Notably, it was one of these managers who led the decision to invest in Amazon back in 2019.

Following the announcement from Berkshire, UnitedHealth's shares saw a 6% increase in post-market trading.

Prior to Berkshire's investment disclosure, UnitedHealth’s shares had plummeted nearly 50% in 2025 up until the preceding Thursday. As the country's largest private health insurer, the company has come under scrutiny amid rising healthcare costs and is currently the subject of a Justice Department investigation concerning its Medicare billing practices.

The company faced further challenges in May when it withdrew its earnings forecast for the year, coupled with CEO Andrew Witty’s resignation. Recent projections for 2025 have fallen short of Wall Street expectations, causing additional stock declines.

Buffett, approaching his 95th birthday, has been a vocal critic of the U.S. healthcare system, labeling it as an economic burden due to exorbitant costs. In 2018, he collaborated with Jeff Bezos and Jamie Dimon in a venture aimed at transforming employee healthcare, which ultimately ceased operations.

Other Strategic Acquisitions

UnitedHealth was not the only acquisition made by Berkshire in the last quarter. The firm took modest positions in a steel producer, a company focused on outdoor advertising, and a security enterprise. Additionally, Berkshire re-entered the homebuilding sector with investments in select companies.

After the announcements, Nucor’s shares experienced a nearly 8% boost in after-hours trading, while shares for Lennar and DR Horton each rose approximately 3%.

As Warren Buffett plans to retire as CEO of Berkshire by year’s end, Greg Abel is set to take over leadership. However, Buffett will continue to serve as chairman of the board. It remains uncertain who will directly oversee the extensive equity portfolio, although Abel is expected to manage all significant financial allocations moving forward.