Key Takeaways
- • Private equity has outperformed the S&P 500 by more than 500 basis points annualized over the last 25 years on a net basis, but this historical advantage has eroded significantly since 2006.
- • Since 2006, median PE fund returns have tracked the S&P 500 using public market equivalent (PME) measurement; from 2022 through Q3 2025, US PE funds returned 5.8% annualized versus 11.6% for the S&P 500.
- • PE delivered an excess annual return of 6% during high-inflation periods from 1981 to 2021 according to KKR, positioning private equity as a potential inflation hedge when equity valuations are elevated.
- • Most PE funds in the now-$7 trillion industry can no longer consistently beat the stock market; the S&P 500 outperformed the median PE fund over the prior five years (measured in 2024) even using the industry-preferred IRR metric.
- • PE firms have faced valuation challenges since mid-2022, with general partners using internal estimates rather than mark-to-market valuations for portfolio companies, masking actual performance deterioration in 2022 when the S&P 500 declined nearly 20%.
Summary
Private equity's long-standing performance advantage over public equities has substantially diminished, despite a historical track record of outperformance stretching back decades. Over the last 25 years, the Global PE Index outperformed the MSCI World Index by more than 500 basis points on an annualized net basis. However, this advantage has largely evaporated in recent years, with most PE funds now unable to consistently beat public market returns.
The performance divergence became pronounced in 2006. Since that inflection point, median PE fund returns have essentially tracked the S&P 500 when measured using public market equivalent (PME), the metric preferred by institutional investors and financial analysts for its accuracy. From 2022 through the third quarter of 2025, US private equity funds delivered annualized returns of 5.8%, significantly trailing the S&P 500's 11.6% return over the same period, according to MSCI private markets research. Even more striking, the S&P 500 outperformed the median PE fund during the five-year period measured in 2024, despite using the industry-favored internal rate of return (IRR) methodology that typically inflates PE returns.
Private equity's positioning as an inflation hedge remains theoretically compelling. From 1981 to 2021, PE funds generated an excess annual return of 6% during periods of high inflation, according to KKR analysis. This inflation-fighting characteristic could prove valuable in environments where equity valuations remain elevated and real returns from public equities are constrained. However, PE's broader performance challenges since mid-2022 have undermined investor confidence. In 2022, when the S&P 500 fell nearly 20%, PE general partners avoided marking portfolio company valuations to market, instead relying on internal estimates that downplayed downturn exposure—a practice that obscured actual portfolio deterioration.
The $7 trillion PE industry now faces structural headwinds as institutional investors reassess return expectations. The historical narrative of private equity substantially outperforming public markets no longer holds empirically for most funds, reshaping the value proposition that has driven decades of capital allocation to the asset class.
The performance divergence became pronounced in 2006. Since that inflection point, median PE fund returns have essentially tracked the S&P 500 when measured using public market equivalent (PME), the metric preferred by institutional investors and financial analysts for its accuracy. From 2022 through the third quarter of 2025, US private equity funds delivered annualized returns of 5.8%, significantly trailing the S&P 500's 11.6% return over the same period, according to MSCI private markets research. Even more striking, the S&P 500 outperformed the median PE fund during the five-year period measured in 2024, despite using the industry-favored internal rate of return (IRR) methodology that typically inflates PE returns.
Private equity's positioning as an inflation hedge remains theoretically compelling. From 1981 to 2021, PE funds generated an excess annual return of 6% during periods of high inflation, according to KKR analysis. This inflation-fighting characteristic could prove valuable in environments where equity valuations remain elevated and real returns from public equities are constrained. However, PE's broader performance challenges since mid-2022 have undermined investor confidence. In 2022, when the S&P 500 fell nearly 20%, PE general partners avoided marking portfolio company valuations to market, instead relying on internal estimates that downplayed downturn exposure—a practice that obscured actual portfolio deterioration.
The $7 trillion PE industry now faces structural headwinds as institutional investors reassess return expectations. The historical narrative of private equity substantially outperforming public markets no longer holds empirically for most funds, reshaping the value proposition that has driven decades of capital allocation to the asset class.
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