Key Takeaways
- • Performance persistence has largely disappeared among private equity managers: Academic research indicates that strong historical performance by PE fund managers does not reliably predict outperformance in subsequent funds, particularly for interim performance measures of funds less than 10–15 years old.
- • Institutional investors face headwinds in beating PE composites: Investors accustomed to outperforming broader private equity benchmarks are finding this increasingly difficult; many incorrectly attribute underperformance to manager selection decisions rather than systemic deterioration in performance predictability across the PE industry.
- • Wide performance dispersion persists despite lack of persistence: While significant variation in returns continues to exist among private equity funds of the same vintage, the ability to identify future winners based on past results has effectively eroded as the "new normal."
- • GMO recommends raising the bar for PE manager hiring: Investment committees should adopt a more selective approach, considering that deploying capital in public markets at lower fees may deliver superior risk-adjusted returns compared to allocating to PE managers lacking a high confidence threshold.
Summary
GMO's Q1 2026 quarterly letter to investment committees addresses a fundamental challenge facing institutional investors in private equity: the apparent breakdown in performance persistence among fund managers. The firm's analysis, based on decades of buyout data, reveals that institutional investors who have historically outperformed private equity composites are encountering sustained difficulties in replicating this success—a problem many attribute to manager selection mistakes rather than recognizing a broader industry-wide trend.
The core finding centers on the erosion of predictive power in private equity manager selection. Academic research presented in the letter demonstrates that a manager's prior strong performance no longer reliably indicates future outperformance, especially when evaluating interim performance metrics for funds with less than 10–15 years of track record. This loss of performance persistence represents a structural shift in the private equity landscape. While significant performance dispersion continues to exist among funds of the same vintage—meaning considerable variation in returns across managers remains—the ability to systematically identify which managers will outperform in their subsequent vehicles has largely vanished.
The implications are substantial. If this lack of persistence becomes the sustained "new normal," institutional investors should recalibrate their expectations regarding the realistic alpha generation potential of private equity allocations. GMO's guidance to investment committees is direct: institutions should materially raise the bar for hiring private equity managers. The firm contends that deploying capital in public markets at substantially lower fees represents a more attractive risk-adjusted opportunity than committing capital to private equity managers for which institutional investors lack full confidence in their ability to deliver excess returns.
This analysis forms part of GMO's broader examination of private equity portfolio risks, which also encompasses Part 1 of the quarterly letter, "What Barbarians Like to Take Private," where authors Ben Inker and John Pease detail how PE portfolios are becoming increasingly concentrated around a narrow set of underlying risks. Together, the two-part examination suggests that institutional investors face both performance headwinds and concentrated risk exposures in their private equity allocations—factors warranting renewed scrutiny of allocation sizes and manager selection criteria.
The core finding centers on the erosion of predictive power in private equity manager selection. Academic research presented in the letter demonstrates that a manager's prior strong performance no longer reliably indicates future outperformance, especially when evaluating interim performance metrics for funds with less than 10–15 years of track record. This loss of performance persistence represents a structural shift in the private equity landscape. While significant performance dispersion continues to exist among funds of the same vintage—meaning considerable variation in returns across managers remains—the ability to systematically identify which managers will outperform in their subsequent vehicles has largely vanished.
The implications are substantial. If this lack of persistence becomes the sustained "new normal," institutional investors should recalibrate their expectations regarding the realistic alpha generation potential of private equity allocations. GMO's guidance to investment committees is direct: institutions should materially raise the bar for hiring private equity managers. The firm contends that deploying capital in public markets at substantially lower fees represents a more attractive risk-adjusted opportunity than committing capital to private equity managers for which institutional investors lack full confidence in their ability to deliver excess returns.
This analysis forms part of GMO's broader examination of private equity portfolio risks, which also encompasses Part 1 of the quarterly letter, "What Barbarians Like to Take Private," where authors Ben Inker and John Pease detail how PE portfolios are becoming increasingly concentrated around a narrow set of underlying risks. Together, the two-part examination suggests that institutional investors face both performance headwinds and concentrated risk exposures in their private equity allocations—factors warranting renewed scrutiny of allocation sizes and manager selection criteria.
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