Many hedge fund managers are involved with their own foundations, also donating massive stacks of cash to them most years. If you know where to look, you can find the fund managers they trust with their foundation’s money — cash they want to protect and grow so they can dole it out to worthy causes. Garrett Thornburg of Thornburg Investment Management is one of those with their own foundation, and he added a few new funds to his foundation’s portfolio in 2024.
Also see: Garrett Thornburg Foundation Invested In Dan Loeb And Dozens Of Other funds
Founded by Garrett Thornburg, who is also chairman of the board, the Thornburg Foundation states that it “uses an evidence-based strategic approach to solve systemic problems that impact people and communities.” Among the organizations the foundation supported with grant money in 2024 were Amigos Bravos, Big Brothers Big Sisters Mountain Region, CASA (Court-Appointed Special Advocates for Children), Farm to Table, National Young Farmers Coalition, and Water Finance Exchange.
According to the Thornburg Foundation’s 990-PF for 2024, which was filed in November 2025, it had $179.4 million in assets at the end of the fiscal year. Thornburg himself contributed the entire $10 million in cash the foundation received in 2024.



