Berkshire Hathaway’s latest 13F filing showed the conglomerate’s U.S. stock portfolio stood at $299.25 billion on June 30, with just three companies accounting for more than half of the total, as Greg Abel largely left Warren Buffett-era core positions in place while building a handful of his own bets. The second-quarter disclosure confirmed a major expansion in Berkshire’s Alphabet stake, which rose by about 48 million shares to roughly 106 million shares, helped in part by a $10 billion private placement in June, making Google’s parent the group’s No. 3 holding. Berkshire bought $23.5 billion of stock and sold $3.7 billion during the quarter, ending 14 straight quarters of net selling, though its cash pile still stood near a record $365.5 billion at the end of June. Abel’s more distinct portfolio moves were concentrated further down the holdings list, including larger positions in Delta Air Lines and housing-related companies. Berkshire added 17.5 million Delta shares in the quarter, lifting the stake 44% to 57.3 million shares worth $5.4 billion, a notable break from Buffett’s decision to exit U.S. airlines in 2020. Berkshire also deepened its housing exposure, including buying back D.R. Horton shares and paying $6.8 billion in cash for homebuilder Taylor Morrison in July, extending a long-running strategy that already includes Clayton Homes. On the selling side, Berkshire cut its Capital One stake by 58%, exited Constellation Brands, and trimmed Bank of America for an eighth straight quarter, leaving that position down 53% from its peak. Buffett said the Alphabet investment was his idea rather than Abel’s, telling CNBC in July that the two work closely together but that Abel is "the decider."