Bill Gates Foundation Concentrates 63% of $31.6B Portfolio in Three Stocks

The Bill & Melinda Gates Foundation Trust's $31.6 billion endowment remains heavily concentrated as of end-Q1 2026, with 63% allocated to just three large-cap holdings. Top positions include Berkshire Hathaway at 26%, Waste Management at 20% and Canadian National Railway at 17%. The filing highlights Microsoft due to Bill Gates' longstanding association with the $3 trillion company, though it is not among the top three weights. This defensive, cash-generative tilt is viewed as a buffer against volatility while creating idiosyncratic concentration risk. Large stakes by the influential trust may also shape liquidity and investor attention in the named names.