The Endowment Model Is Broken
Yale's investment framework conquered institutional finance — then stopped working
David Swensen built a model for institutions with Yale's access. Everyone else adopted it without Yale's advantages.
David Swensen transformed institutional investing. As Yale’s chief investment officer from 1985 until his death in 2021, he pioneered an approach built on illiquidity premiums: heavy allocations to venture capital, private equity, real assets, and hedge funds, with minimal exposure to traditional stocks and bonds. The results were spectacular, and the model was widely copied. That copying is now the problem.
The endowment model works when a small number of investors have access to the best managers. It fails when every pension fund, foundation, and sovereign wealth fund is competing for the same allocations. Returns compress, fees remain high, and the illiquidity that was supposed to generate a premium becomes a trap.
David Swensen built a model for institutions with Yale’s access. Everyone else adopted it without Yale’s advantages.
The Performance Gap
Since 2015, the median large endowment has underperformed a simple 60/40 portfolio of public stocks and bonds — after fees. The top decile still generates meaningful outperformance, but the distribution is skewed: a few winners and many institutions paying venture capital fees for index-fund returns.
The Governance Problem
The endowment model requires sophisticated governance — experienced investment committees, talented staff, and the institutional patience to tolerate years of underperformance from illiquid strategies. Most institutions that adopted the model lack these prerequisites.