June 17, 2026
How are endowments thinking about private markets, illiquidity, and the denominator effect?
The "denominator effect" has emerged as one of the most significant issues facing private markets, creating widespread over-allocation problems for endowments and other limited partners (LPs) [1, 2, 3]. This mechanical over-allocation, which occurs when public market portfolios decline in value while private asset valuations remain static, has collided with general partners (GPs) raising ever-larger funds, creating a looming industry shakeout [3, 8]. The immediate consequence for LPs is a severe liquidity crisis, characterized by a massive problem with low Distributions to Paid-In Capital (DPI) [6, 12]. This has stalled the traditional capital recycling engine, resulting in an estimated **$200 billion** in net negative cash flow for LPs since 2022 and forcing them to re-evaluate pacing strategies and become more selective with new commitments . The strained environment is expected to fuel a flight to quality managers and may push GPs to seek capital from new sources, such as the retail investor market [5, 16].
Despite these near-term challenges, the strategic imperative for private market allocations remains strong, driven primarily by the search for diversification away from increasingly concentrated public equity markets [4, 10]. The widespread adoption of the "Yale Model," which pioneered significant allocations to illiquid alternatives, has shifted the conversation from *if* endowments should invest in private equity to *how much* [3, 7, 28]. Allocation targets and current exposures vary, reflecting different institutional philosophies. Princeton's endowment (Princo), for instance, has a long-term policy target of **25%** to private equity [14, 19], while Washington University in St. Louis reported being overweight at roughly 45% of its portfolio . These figures are consistent with the broader range of 20-50% for sophisticated institutional investors [11, 27], and have been the top-performing asset class for some, like the Stanford Management Company .
Go deeper
Search this topic across 400+ expert conversations on Sonic.
In response to the current liquidity squeeze and concerns about future returns, endowments are adopting more dynamic portfolio management tactics and, in some cases, challenging the high-allocation consensus [7, 13]. Allocators are actively reducing annual commitment budgets, extending assumed fund lives in their financial models, and strategically using the secondary market to manage exposures . A notable counter-strategy is being pursued by Virginia Commonwealth University's endowment, which intentionally limits its private market exposure to **20-25%** to preserve liquidity [9, 18]. This approach is designed to retain the ability to act counter-cyclically during market dislocations, a strategic tool that some believe has been lost by endowments that are heavily over-allocated to illiquid assets [18, 26]. This caution is amplified by skepticism about the ability of multi-billion dollar mega-funds to generate meaningful returns and a belief that the private equity return premium has shrunk in a crowded market [24, 29].
What the sources say
Points of agreement
- •The 'denominator effect' is a top issue for endowments, leading to widespread over-allocation in private markets.
- •Limited Partners, including endowments, are facing a significant liquidity squeeze due to low distributions (DPI) and negative cash flows from private investments.
- •The challenging environment is causing a 'flight to quality,' forcing endowments to be more selective with their General Partner commitments.
- •Private markets are increasingly viewed as a necessary source of diversification due to high concentration in public equity markets.
Points of disagreement
- •There is disagreement on optimal private market allocation, with some endowments intentionally limiting exposure to 20-25% for strategic liquidity while others are allocated at 45% or more.
- •Experts are divided on future private market returns, with some expressing caution due to unsustainable valuations while others see a continued 'private market imperative' for diversification.
- •While some argue the next major source of capital for private funds will be the retail market due to institutional over-allocation, others focus on institutional strategies like seeding new managers.
Sources
CIO Greatest Hits: Private Equity - Mario Giannini (Hamilton Lane)
This source establishes that LP over-allocation and the denominator effect are top issues driving a near-term industry shakeout and a flight to quality.
Bruce MacDonald – The Playbook for Building a Mid-Sized Endowment from Scratch (EP.495)
This source presents a contrarian endowment strategy that intentionally limits private asset exposure to maintain high liquidity as a tool to capitalize on market dislocations.
Ed Grefenstette and Sean Warrington – Venture Market Update (EP.488)
This source details the current LP liquidity crisis, highlighting net negative cash flow and a lack of distributions which forces LPs to be more selective.
Tim Sullivan - Yale's Private Portfolio (EP.456)
This source provides historical context on the Yale model's move into private equity while expressing caution about future returns due to high valuations and market competition.
Private Markets, Software Repricing and Capital Allocation | Marc Rowan on a16z
This source argues for a 'private market imperative,' stating that extreme concentration in public markets makes private assets the only remaining source of diversification.
Miles Dieffenbach: Inside Carnegie Mellon’s $4BN Endowment & The Math Behind DPI, TVPI, Illiquidity
This source provides a critical framework for LPs, questioning the viability of top-tier returns from multi-billion dollar mega-funds due to the daunting mathematics of scale.
Related questions
How are endowments using the secondary market to actively manage portfolio liquidity and overallocation issues?
→What specific characteristics define a 'quality' GP that endowments are prioritizing in the current fundraising environment?
→How are endowments reconciling the 'flight to quality' towards established managers with the mathematical challenges of generating returns in mega-funds?
→What strategies are endowments with high private market allocations using to manage illiquidity risk compared to those intentionally maintaining higher liquidity?
→Ask your own research questions
Search and synthesize across 400+ expert conversations in real time.
Try: “How are endowments thinking about private markets, illiquidity, and the denominator effect?”
Search this on Sonic →