Key Takeaways
- • 62% of the top 50 US public pension plans benchmark their private equity portfolios against listed equity indices, a practice that may create misaligned performance expectations and underestimate the risk-return trade-off inherent to illiquid alternative assets.
- • Pension funds using equity benchmarks for PE evaluation risk selecting investments that appear acceptable under lenient benchmarking criteria but would fail scrutiny under more demanding alternative performance standards, potentially masking underperformance.
- • Major pension systems including CalPERS and CalSTRS have begun lowering their return expectations for private equity, signaling institutional recognition that historical PE outperformance assumptions may be unsustainable or overstated.
- • The benchmarking mismatch creates structural problems for pension fund allocation decisions, as listed equity indices do not adequately capture the liquidity constraints, fee structures, and longer time horizons characteristic of private equity investments.
Summary
A significant portion of the largest US public pension plans are relying on benchmarking methodologies that may poorly serve fiduciary obligations and long-term return objectives. According to Financial Times analysis, 62% of the top 50 US public pension funds benchmark their private equity portfolios against listed equity benchmarks—a practice that introduces material distortions into performance evaluation and asset allocation decisions.
The core problem lies in fundamental structural mismatches between the characteristics of public equity indices and private equity portfolios. Listed equity benchmarks reflect daily liquidity, transparent pricing, and fee structures substantially different from private equity vehicles, which involve illiquidity constraints, multi-year J-curves, and embedded carry fees. When pension funds evaluate PE performance against public market indices, they risk selecting positions that appear acceptable under this lenient standard but would fail assessment under benchmarks that account for liquidity risk and illiquidity premiums.
The consequences of this benchmarking approach extend beyond measurement: funds using overly easy benchmarks may accept lower risk-adjusted returns, misallocate capital to PE positions that don't justify their illiquidity premium, and create accountability gaps between stated fiduciary standards and actual portfolio construction. Research cited in industry discussions underscores that changing benchmark assumptions can fundamentally alter which investments appear optimal, potentially leading to suboptimal long-term outcomes for beneficiaries.
Major institutional investors are beginning to recalibrate. CalPERS, CalSTRS, and other leading public pension systems have announced reductions in their long-term return expectations for private equity, reflecting growing skepticism that historical PE outperformance relative to public markets remains achievable given current deal valuations, fee inflation, and competitive dynamics. This shift suggests institutional awareness that the benchmarking disconnect has contributed to inflated return assumptions that are increasingly difficult to justify.
For pension fund trustees and institutional allocators, the implication is clear: benchmarking private equity against public equity indices creates a systematic bias toward overestimating PE attractiveness and underestimating portfolio risk. Reconsidering benchmark selection toward measures that explicitly account for illiquidity risk, time horizon, and fee structures represents a necessary governance correction.
The core problem lies in fundamental structural mismatches between the characteristics of public equity indices and private equity portfolios. Listed equity benchmarks reflect daily liquidity, transparent pricing, and fee structures substantially different from private equity vehicles, which involve illiquidity constraints, multi-year J-curves, and embedded carry fees. When pension funds evaluate PE performance against public market indices, they risk selecting positions that appear acceptable under this lenient standard but would fail assessment under benchmarks that account for liquidity risk and illiquidity premiums.
The consequences of this benchmarking approach extend beyond measurement: funds using overly easy benchmarks may accept lower risk-adjusted returns, misallocate capital to PE positions that don't justify their illiquidity premium, and create accountability gaps between stated fiduciary standards and actual portfolio construction. Research cited in industry discussions underscores that changing benchmark assumptions can fundamentally alter which investments appear optimal, potentially leading to suboptimal long-term outcomes for beneficiaries.
Major institutional investors are beginning to recalibrate. CalPERS, CalSTRS, and other leading public pension systems have announced reductions in their long-term return expectations for private equity, reflecting growing skepticism that historical PE outperformance relative to public markets remains achievable given current deal valuations, fee inflation, and competitive dynamics. This shift suggests institutional awareness that the benchmarking disconnect has contributed to inflated return assumptions that are increasingly difficult to justify.
For pension fund trustees and institutional allocators, the implication is clear: benchmarking private equity against public equity indices creates a systematic bias toward overestimating PE attractiveness and underestimating portfolio risk. Reconsidering benchmark selection toward measures that explicitly account for illiquidity risk, time horizon, and fee structures represents a necessary governance correction.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.