Largest Foundations by Total Assets
The Bill and Melinda Gates Foundation remains the largest US foundation by total assets, with reported assets exceeding 67 billion dollars as of the latest public filings. The foundation focuses on global health, poverty alleviation, and education, and it regularly publishes detailed grant and investment data on its website gatesfoundation.org. The Ford Foundation follows with assets above 16 billion dollars, emphasizing social justice, human rights, and democratic participation in the United States and abroad fordfoundation.org.
The Lilly Endowment, headquartered in Indianapolis, holds assets surpassing 60 billion dollars, making it one of the largest private foundations by market value. Its investment portfolio is heavily weighted toward Eli Lilly and Company stock, and it directs significant giving to religion, education, and community development in Indiana and nationally lillyendowment.org. The Charles Koch Foundation and the David H. Koch Fund, associated with Koch Industries, collectively manage billions in assets and focus on free societies, criminal justice reform, and science education kochfoundation.org.
Foundations by Annual Grant Giving
High-Volume Grant Makers
The Bill and Melinda Gates Foundation consistently ranks among the top grant makers, distributing over 6 billion dollars annually in recent years across global health, agricultural development, and US education programs. The Ford Foundation typically allocates more than 700 million dollars per year, with a strong emphasis on racial justice, gender equality, and economic opportunity Forbes.
The Robert Wood Johnson Foundation, the largest US philanthropy focused exclusively on health, reports annual grants exceeding 1 billion dollars, targeting health equity, public health systems, and substance use prevention. The W.K. Kellogg Foundation directs billions in cumulative giving toward child welfare, education, and racial equity, with annual grants concentrated in US communities with high poverty rates rwjf.org.
Investment Strategies and Portfolio Highlights
Public Equity and Private Investments
Many of the largest US foundations hold substantial positions in publicly traded equities, with the Vanguard Total Stock Market ETF and individual stakes in companies such as Apple, Microsoft, and Amazon appearing frequently in 990-PF filings. The Gates Foundation and the Lilly Endowment are notable for concentrated equity positions in a single company, with the latter holding Eli Lilly stock representing a major share of its portfolio SEC.
Several top foundations have expanded into private markets, including venture capital, real estate, and impact investing vehicles targeting climate and affordable housing. The Ford Foundation has committed billions to mission-related investments, blending financial returns with social impact in areas such as affordable housing and clean energy fordfoundation.org.
Regulatory and Reporting Context
US foundations with assets above 5000 dollars must file Form 990-PF annually with the Internal Revenue Service, providing public disclosure of assets, grants, and investment income. The SEC oversees registered investment advisers managing foundation assets, and large foundations often disclose proxy voting records and ESG-related votes in their filings SEC.