Bill Gates Invests Almost 30% of His $35 Billion Portfolio in One Surprising Stock

Key Points

• The Gates Foundation manages a portfolio worth approximately $35 billion, with its largest holding being Berkshire Hathaway.

• The foundation owns about 19.4 million Class B shares of Berkshire Hathaway, valued at around $9.8 billion as of the end of 2025.

• Warren Buffett has donated $43.3 billion in Berkshire stock to the foundation from 2006 to 2024.

The Gates Foundation, established by Bill Gates in 2000, is one of the richest charities globally, having spent over $102 billion on charitable efforts. Currently, it manages $86 billion in assets, where 96% of its investment is concentrated in its top 10 holdings, with Berkshire Hathaway being the most significant.

The foundation’s investment strategy reflects substantial donations from Buffett, driving its significant ownership in Berkshire. In the fourth quarter of 2025, the foundation sold 2.36 million shares of Berkshire, generating over $1 billion to support its charitable initiatives.