Independent Schools Increasingly Using Outsourced CIO Providers

Nearly one-half of institutions surveyed by Commonfund reported using an OCIO.



An increasing number of independent pre-k through 12th-grade schools reported outsourcing their investment management to outsourced CIO providers, Commonfund reported in its “
Commonfund Benchmarks Study of Independent Schools,” which tracks performance and trends of these institutions’ endowments.

Approximately 46% of institutions surveyed by Commonfund reported using an OCIO in the 2024 fiscal year, up from 33% in fiscal 2023. Of those endowments that outsourced assets, an average of 98.5% of assets were outsourced.

Approximately 26% of endowments with less than $10 million outsourced the investment management of their assets. Approximately 59% of endowments that reported having between $10 million and $50 million in assets outsourced, and 43% of endowments with more than $50 million in assets outsourced.

Commonfund conducted the study of independent school endowments alongside the Business Leadership of Independent Schools. 

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Returns and Asset Allocation

Per Commonfund, independent schools’ endowments returned an average 12.3% in the 2024 fiscal year. Over the past five, 10, 15 and 20 years, these institutions returned an annualized 7.7%, 6.7%, 8.0% and 6.9%, respectively.

These institutions allocated 35% of their portfolios to equities, 30% to alternative investments, 17% to non-U.S. equities, 14% to fixed income and 4% to short-term securities, cash and other assets.

Similar to university endowments, for which performance was tracked in a previous Commonfund study, larger endowments underperformed smaller ones in the 2024 fiscal year. They also allocated a larger percentage of their portfolios to private investments.

Endowments with less than $10 million in assets reported an average 1% allocation to alternative strategies. For endowments with $10 million to $50 million, they allocated 11% on average to these strategies. Endowments with more than $50 million in assets reported an average 34% allocation to alternatives.

The cohort of endowments with less than $10 million in assets also reported the highest returns: an average of 13.5%. Endowments with $10 million to $50 million reported average returns of 12.0%, while those with at least $50 million also reported 12.0% returns.

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