Warren Buffett's Berkshire Hathaway built a $1.6 billion stake in UnitedHealth last quarter, marking one of its last wagers with the investor as CEO.

The Oracle of Omaha sent two-thirds of his company's largest investment holding packing in favor of a 7.7% stake in a steadily growing, consumer-facing business.

The most significant addition was UnitedHealth Group Inc (NYSE:UNH), with 5,039,564 shares, accounting for 0.61% of the portfolio and a total value of $1.572 billion. The second largest addition to the portfolio was Lamar Advertising Co (NASDAQ:LAMR),

Also notice that although these are six brand-new positions, they add up to about $4 billion, significantly less than the proceeds from the Apple, Bank of America, and T-Mobile sales, which is how Berkshire was still a net seller of stocks for the quarter.

Warren Buffett’s Berkshire Hathaway resumed selling shares of Apple in the second quarter, offloading a stake worth more than $4bn as the billionaire investor continued to cut one of his most profitable trades.

At Berkshire Hathaway’s annual meeting earlier this year, Warren Buffett showed just how much of a fan he is of Apple’s CEO, Tim Cook. “Tim Cook has made Berkshire a lot more than I have made Berkshire,” Buffett said to laughter in the room. It was funny, but considering that Apple is Berkshire’s largest holding, I don’t think it was hyperbole.

Buffett began buying shares in the consumer electronics giant in 2016 and continued buying, turning Apple into Berkshire Hathaway's biggest individual stock holding in 2017. Apple represented roughly 50% of Berkshire Hathaway's investment portfolio at its peak in 2023.

However, Buffett has a keen eye for value and he never wants to overpay for a stock -- not even his own. Berkshire is currently trading at a price-to-sales ratio (P/S) of 2.5, which is a huge 25% premium to its 10-year average of 2.