After a quarter-century of intertwined fortunes, the Bill & Melinda Gates Foundation has officially ended its historic financial relationship with Microsoft, selling off its remaining stake in the tech giant. According to financial disclosures and reports from multiple outlets including Barron’s, Pinbold, and Yonhap News, the foundation divested all 7.7 million of its Microsoft shares during the first quarter of 2026, netting about $3.2 billion (roughly 4.8 trillion KRW). This move, finalized in May 2026, marks the conclusion of an era—one where the world’s largest private philanthropic organization and the company that made Bill Gates a household name were financially bound.
The Gates Foundation, established in 2000 by Bill Gates and his then-wife Melinda French Gates, has long been synonymous with large-scale giving and ambitious humanitarian goals. With assets totaling around $75 billion, much of the foundation’s endowment was originally composed of Microsoft stock donated by Gates himself. As recently as March 2025, the foundation still held 28.5 million Microsoft shares, valued then at about $10.7 billion, according to SEC filings referenced by Pinbold and other financial media.
The sale of Microsoft shares is the culmination of a two-year strategy to reduce the foundation’s holdings in a single company. Experts cited by Pinbold and Barron’s agree that this wasn’t a vote of no confidence in Microsoft’s future, but rather a prudent move to diversify the foundation’s portfolio and prepare for a significant ramp-up in charitable spending. In fact, the foundation’s annual donations to global health, poverty alleviation, and disease eradication projects are set to reach $9 billion in 2026—a substantial increase from previous years.
Bill Gates himself remains Microsoft’s largest individual shareholder, holding 103 million shares valued at about $43 billion, as confirmed by multiple sources. The foundation’s divestment does not affect Gates’s personal stake in the company, and he continues to serve as the sole trustee of the Gates Foundation Trust, which operates independently with support from Cascade Asset Management.
The decision to shed Microsoft shares is closely tied to the foundation’s long-term strategy. Last year, Gates announced an ambitious plan: over the next 20 years, the foundation will spend down all its assets and close by 2045. This mission, unprecedented in scale, requires careful risk management and asset reallocation. As a result, the foundation’s investment portfolio has shifted away from a heavy reliance on tech stocks to a broader focus on infrastructure and industrial holdings. As of the most recent filings, the top five holdings in the foundation’s trust are Berkshire Hathaway (25.8%), Waste Management (20.0%), Canadian National Railway (16.8%), Caterpillar (14.2%), and Deere & Company (6.3%).
The market’s reaction to the sale was muted. Financial analysts quoted by Pinbold and Barron’s noted that the divestment had been telegraphed for some time and was clearly motivated by charitable intent rather than any negative outlook on Microsoft’s prospects. On the day of the disclosure, Microsoft’s stock dipped only 0.42% to close at $422.07, and Barron’s reported that the transaction had little long-term impact on the company’s share price. Nevertheless, Microsoft’s stock has been under some pressure in 2026, down about 11% year-to-date, which market watchers attribute more to investor concerns over the company’s aggressive artificial intelligence (AI) investments than to the Gates Foundation’s actions.
While the foundation is winding down its direct financial ties with Microsoft, it is doubling down on its commitment to global health, education, and technological innovation. On May 14, 2026, the Gates Foundation announced a major new partnership with Anthropic, an AI research company. The two organizations will jointly invest $200 million over four years to apply advanced AI technologies in health, education, life sciences, and economic mobility initiatives around the world. Each partner is contributing $100 million: Anthropic will provide access to its AI model “Claude” and technical support, while the Gates Foundation will offer cash grants and program design expertise.
The collaboration is ambitious in scope. In health and life sciences, AI will be harnessed to accelerate the development of new vaccines and treatments, potentially speeding up responses to emerging diseases. In education, the partnership aims to create personalized learning tools for students in the United States, Sub-Saharan Africa, and India, addressing disparities in access and quality. And in the realm of economic mobility, the initiative will support programs to boost agricultural productivity for the roughly two billion people worldwide who rely on small-scale farming for their livelihoods.
This isn’t the foundation’s only recent foray into AI-powered philanthropy. Earlier in 2026, the Gates Foundation teamed up with OpenAI in a $50 million public partnership to support clinics across Africa, further underscoring its belief in the transformative potential of artificial intelligence for public good.
Market observers and philanthropic experts alike see the foundation’s recent moves as emblematic of a broader shift in how large charitable organizations manage their resources. With its plan to spend down entirely by 2045, the Gates Foundation is breaking from the traditional model of perpetual endowments, instead opting for a “giving while living” approach. This strategy, according to commentators cited by Pinbold, is designed to maximize impact now, rather than stretching resources indefinitely into the future.
For Bill Gates, the transition is both personal and strategic. By maintaining his own substantial stake in Microsoft while guiding the foundation through its final decades, he is ensuring that both his philanthropic legacy and his influence in the tech world remain intact. The foundation’s independent management structure—where Gates serves as sole trustee with oversight from Cascade Asset Management—helps insulate its charitable mission from the fluctuations of any single stock or sector.
As the Gates Foundation turns the page on its historic Microsoft holdings, its focus is squarely on the future: deploying its vast resources to tackle some of humanity’s most pressing challenges, from global health crises to educational inequality and economic development. The end of its financial relationship with Microsoft may be the close of one chapter, but for the world’s largest private charity, the next act is already well underway—one powered by innovation, collaboration, and a commitment to making a measurable difference in the years to come.