The Endowment's Spending Rule and the Illiquidity Trap
A $400M university endowment has a spending rule of 4.5% of a 3-year moving average of market value. Its policy portfolio is 35% public equities, 20% bonds, 25% private equity, 15% real assets, and 5% cash. Private equity is 25% of the portfolio but the target is 25% - however, the PE sleeve is only 60% funded (uncalled commitments equal 10% of total endowment), and the endowment has been asked to commit to two new PE funds. The endowment returned −6% last year, and the 3-year average is $410M, implying a $18.45M spending draw. Liquid assets (public equities + bonds + cash) are $240M. The board wants to increase the PE target to 30% to capture the illiquidity premium.
1. Assess whether the endowment can prudently increase the PE target to 30%, given its liquidity profile and spending needs. Show the arithmetic.
Read the worked answer
Current liquidity position:
- Liquid assets: 35% + 20% + 5% = 60% of $400M = $240M.
- Annual spending: 4.5% × $410M (3-yr average) = $18.45M.
- Liquidity coverage: $240M / $18.45M ≈ 13 years of spending from liquid assets. That looks comfortable - but it ignores the call risk on PE.
Uncalled commitments: 10% of $400M = $40M of dry powder that can be called at any time. If the PE program calls capital during a downturn (exactly when public markets are down and the endowment is drawing spending), the liquid sleeve must fund both the calls and the spending.
Stress test: a 20% public-market decline cuts liquid assets to $192M; a simultaneous $40M capital call plus $18.45M spending leaves $133.5M, or ~7 years of coverage - still survivable but the endowment would be a forced seller of public equities at the bottom.
Moving to 30% PE: that is 30% × $400M = $120M of PE, versus current funded PE of 25% × 60% = 15% of $400M = $60M funded, plus $40M uncalled = $100M committed. Raising the target to 30% means committing roughly another $20M+ and funding it over years. The illiquidity premium is real but the endowment is already at a 25% target with only 60% funded - it has not yet deployed the target it set. Increasing the target before funding the existing one compounds the illiquidity risk without capturing the premium sooner.
2. The board argues the illiquidity premium justifies the higher allocation. What conditions would have to hold for that to be a sound decision, and what would you recommend?
Read the worked answer
The illiquidity premium is compensation for bearing risk that cannot be diversified away on demand - it is real, but it is not free, and it is not captured by simply raising a target. Conditions for a sound increase:
- The existing target must be substantially funded first. At 60% funded, the program is still ramping. Promising more commitments before the current ones are drawn does not increase exposure to the premium; it increases commitment risk.
- Liquidity coverage must survive a stress case. The 13-year coverage is fine in the base case but thins to ~7 years under a combined market decline + capital call + spending draw. The board should set a minimum liquidity floor (e.g., liquid assets ≥ 5 years of spending plus 100% of callable commitments) and test against it.
- The spending rule must be robust. A 3-year moving average smooths but does not eliminate the problem: a sharp decline still hits spending with a lag, and the endowment may be forced to sell illiquid or depressed assets. A spending collar (e.g., cap the draw at 5.5% and floor at 3.5% of market value) would reduce forced-selling risk.
- The premium must be expected to exceed the cost. The PE premium is estimated at maybe 2–3% gross over public equities, but fees, J-curve, and the risk of vintage concentration can erode much of it. The board should require a documented expected-return build, not a slogan.
Recommendation: do not raise the target to 30% now. First fund the existing 25% target and build the uncalled-commitment reserve into the liquidity policy. Revisit the 30% target only after (a) the PE sleeve is at least 85–90% funded, (b) a stress test shows ≥5 years of liquid coverage after a 20% equity decline and full call of commitments, and (c) the spending rule has a collar. The illiquidity premium is a reason to hold PE, not a reason to over-commit to it.