Gates Foundation Concentrates 43% of $33B Portfolio in Berkshire, WM After MSFT Exit

The Gates Foundation Trust has now fully exited its remaining Microsoft holdings, shifting its $33 billion equity portfolio into heavy concentration in Berkshire Hathaway (25%) and Waste Management (18%). The final $3.2 billion sale of 7.7 million shares in Q1 2026 was driven by the foundation’s mandated wind-down by 2045, requiring over $200 billion in spending. While Microsoft posted 18% revenue growth to $82.9 billion and 23% EPS gains, shares remain 13-20% below recent highs. Bill Gates retains a separate personal stake of roughly 103 million shares valued at $43 billion. Coverage frames the move as mechanical rebalancing rather than a negative signal on the company.