Berkshire Hathaway now holds 30.6% of its more than $350 billion portfolio in two artificial intelligence stocks, Apple and Alphabet, a concentration that has shifted sharply over the past year as the conglomerate sold down its longtime Apple position while building a new Alphabet stake under incoming chief executive Greg Abel.
The Apple unwind continues
Apple remains Berkshire's largest single holding at 20.7% of the portfolio, but the position has been cut aggressively. The conglomerate held 914.5 million shares at the start of 2023, representing roughly half the portfolio. Today it holds just under 228 million shares. Warren Buffett, who led Berkshire for 60 years before Abel took over this year, originally bought Apple in 2016 citing the ecosystem and consumer loyalty, not its AI prospects. The company's current AI strategy centers on on-device processing through its Intelligence initiative, with Siri AI as the flagship feature.
Alphabet stake built in three tranches
Berkshire's Alphabet position is barely a year old. The first purchase came in the third quarter of 2025: 17.86 million shares for $5.18 billion. In the first quarter of 2026, under Abel, Berkshire added 36.4 million shares. Then came a $17 billion follow-on, including a $10 billion private placement, as Alphabet raised $80 billion to fund AI infrastructure. The source text breaks off at "Today, Berkshire Hathaway owns 7" without completing the current share count or portfolio percentage.
Different AI bets, same portfolio weight
The two positions reflect contrasting approaches to AI. Apple is embedding generative features on devices to lock in its user base. Alphabet is spending billions on data-center capacity to train and serve large models. Berkshire's combined exposure exceeds $112 billion, meaning the conglomerate's returns are now heavily tied to how the market values AI, whether through consumer upgrade cycles or cloud infrastructure demand.
What to watch next
The portfolio's AI weight has risen even as the Apple stake shrank, because the Alphabet purchases more than offset the sales. Investors will watch whether Abel continues adding to Alphabet or lets the current weights ride. The next 13F filing will show if the private placement converted to additional shares and whether the "7" in the truncated disclosure refers to a percentage, a share count in tens of millions, or something else entirely.