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Single-family offices often have private foundations under their purview—how did the investment performance at yours stack up against others in 2025?

For the third year in a row, the average foundation endowment posted double-digit annual returns, according to a yearly study of 285 private and community foundations by the asset management firm Commonfund and the Council on Foundations. The study included foundations of various sizes located throughout the U.S.

Among the 171 private foundations that participated in the study, the average return in 2025 was 14.1%, up from 10.3% in 2024. The 114 community foundations barely beat them, with an average 2025 return of 14.7%, up from 11%in 2024. All the returns reported are net of fees.

Three straight years of double-digit returns is a record for the annual survey, which began in 2014, and a welcome one. Average returns were a record low in 2022 (-12% for private foundations and -13.3% for community foundations).

Larger private foundations also performed slightly better than smaller ones. Private foundations with assets over $500 million had an average annual return of 14.5%; $101-500 million had 14.2%; and those under $101 million had 13.5%. Alternative investments drove returns in 2025, especially for the private foundations invested in secondaries (20.6%), commodities and managed futures (20.1%), venture capital (12.7%) and various hedge-fund strategies (11.8%). Private foundations allocate about 45% of their portfolios to alternative investments, similar to the asset allocations of large family offices, which change little year over year. 

Most family offices are similar in size to the nearly 300 institutions surveyed. Those hoping to emulate those portfolios and get similar annual returns should know that roughly half outsource some or all of their portfolio management.

Outsourced investment offices (OCIOs) were used by 39% of private foundations and 47% of community foundations. Both percentages were within one percentage point of the previous year’s. The percentage of similarly sized university endowments is even higher; 60% now work with an OCIO.

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