When David Swenson published the "Yale Model," many institutions tried to copy it without possessing Yale's resources, network, or manager selection expertise. This led many to chase private equity and hedge funds ill-equipped, resulting in them backing lower-quartile managers and achieving poor results.

The shift to index funds was triggered not by a belief in market efficiency, but by the surprising discovery that alternative investments are highly tax-inefficient for individuals due to non-deductible fees and ordinary income, creating a tax drag of up to 20%.

While David Swenson's Yale model is famous, investors can learn from older, less-publicized endowment strategies. This highlights the need to adapt core investment principles to current markets rather than rigidly copying a single, popular historical approach.

High-net-worth individuals are poorly served by standard financial advisors. Traditional wealth managers lack investment skill, while institutional asset managers focus on pre-tax returns for their tax-exempt clients (like endowments), ignoring the huge potential of tax alpha for individuals.

An effective strategy combines passive management for low-dispersion public equities with active management for high-dispersion private markets. For publics, tax-managed passive funds generate reliable tax alpha. For privates, active selection is crucial to capture significant outperformance from top-quartile managers.

David Swenson's endowment model has two parts: diversified market exposure (beta) and manager outperformance (alpha). While wealth advisors can easily replicate the beta part using low-cost ETFs, they lack the institutional resources to consistently select top-quartile managers who generate true alpha.

The once-revolutionary strategy of heavy allocation to private assets, pioneered by Yale's David Swenson, has been so widely copied that it has lost its edge. Gurley argues this 'mimic effect' has led most endowments to be over-invested in illiquid private equity and venture funds with potentially inflated, stale valuations.

Victor Haghani identifies his primary error at LTCM as personal over-concentration. He failed to consider that his investment in the fund, his share of the management company, and his own human capital were all tied to a single outcome, creating a much larger and more correlated risk than he realized.

While the endowment model is popular, its implementation via managers with high portfolio churn (like long-short funds) is ill-suited for family offices. Unlike tax-exempt endowments, taxable investors suffer the full cost of frequent trading, requiring a modified, more tax-aware strategy.