Bill Gates is unloading billions of dollars in shares of Microsoft, the company he co-founded, and reducing a significant piece of his stake in Warren Buffett’s Berkshire Hathaway.
The Gates Foundation Trust sold 1.5 million Microsoft shares valued at $1.04 billion in the fourth quarter of 2025. That move trimmed the foundation’s Microsoft holdings by 16%, leaving it with 7.69 million shares worth $3.72 billion.
The trust also dumped $1.19 billion worth of Berkshire Hathaway shares, cutting its position by 2.36 million Class B shares. At the end of Q4, the foundation owned 19.4 million Berkshire shares valued at $9.75 billion.
Berkshire Hathaway remains the top holding at 27.59% of the portfolio, followed by Waste Management at 17.98%, Canadian National Railway at 14.49%, Microsoft at 10.52%, and Caterpillar at 10.29%. The trust did not sell any other positions and added none.
The Gates Foundation Trust now oversees more than $35 billion in securities.