In March 2020, equity markets fell 34% peak-to-trough while capital calls kept arriving from private funds committed years earlier. Yale sold roughly $1 billion of private equity (PE) at discounts, Harvard drew on its credit line, and Princeton took a federal bridge loan. Those responses are a reminder that illiquidity is a real constraint, not a footnote.
When a pension commits $100 million to a buyout fund, capital does not leave immediately. The general partner (GP) calls capital as deals appear, typically over 3 to 5 years, then distributes during the harvest period. Net cash flow follows a J-curve: negative for years, then strongly positive. The limited partner (LP) must hold enough liquidity (commonly 10% to 20% of net asset value, or NAV) to meet calls without forced selling.
Excess liquidity drags returns because cash parked in Treasury bills earns far less than long-term private investments. Insufficient liquidity is worse: it can force sales of illiquid assets at deep discounts, as happened in the global financial crisis.
Common mistakes
- Selling PE at stressed discounts to "rebalance." A fund holding 33% PE against a 25% target sees an 8 percentage-point gap. Selling at a 20% secondary discount on $160M realizes $128M, a $32M permanent loss. The rebalance looks correct on paper, but a futures overlay or commitment pacing is almost always cheaper.
- Assuming CPPI always protects the floor. CPPI holds only under continuous trading and only if equity falls less than 1/m. A 25% overnight drop with implies cushion destruction beyond the floor in a single print. Candidates who choose "CPPI always floor-protects" miss Gap Risk, and those who ignore re-entry miss Absorption Risk.
- Forgetting the foregone loss carryforward when switching managers. A fund down 25% earns the next 33.33% fee-free; a new fund with a 20% fee must return 41.67% (alpha of 8.34%) just to match it after fees. Treating the switch as costless ignores the carryforward benefit you surrender.
Bottom line
- Overcommitment ratio = total commitments / resources available; 125% to 140% is documented as reasonable, and the optimal level minimizes idle-capital cost plus adverse-event cost.
- Funding risk is the inability to meet capital calls; measure it with a funding test or cash flow model, and overcommitting beyond distributions creates commitment risk.
- Liquid alternatives come in four types (unconstrained clones, constrained clones, liquidity-based replication, skill-based replication) and on average underperform matched LP funds.
- Co-investing uses three structures (LP direct, separate GP fund, deal-by-deal) at fees of 0/0, 1%/10%, or 0%/20%, with eight advantages against five disadvantages; evidence is mixed (Fang underperform, Braun outperform).
Exam shortcut
Before picking a rebalancing tool, identify the regime (trending, range-bound, gap-risk) and the illiquid share. Illiquid above 20%: use a futures overlay, never force secondary sales. Gap-risk present: OBPI, not CPPI. Range-bound liquid sleeve: constant-mix. The denominator effect is a rebalancing signal that rarely justifies secondary sales.
The full lesson (about 5,819 words, 39 min read) adds 2 worked examples, all 6 common mistakes, a self-check, free in the app.
Learning objectives
- mvo process
- mvo implementation
- mvo multiple risky
- mvo issues
- mvo adjustments
- mvo estimation error
- tpa overview
- tpa defining
- tpa governance
- tpa factor lens
- tpa competition capital
- tpa culture
- tpa implementing
- core satellite
- top down bottom up
- risk budgeting
- factor risk budgeting
- risk parity
- other quant strategies
- taa
- taa process
- cash commitments illiquidity
- liquid alternatives
- lp direct investment
- co investments
- co investment returns
- secondary market pe
- gp led secondaries
- rebal buy hold constant mix
- rebal directional
- rebal cppi
- rebal obpi
- rebal dynamic illiquid
- rebal costs
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