Key Takeaways
- • Private equity outperformed all other private market asset classes in a CFA Institute Monte Carlo retirement modeling study, generating average end accumulation of US$1.489m—13% above the baseline equities-and-bonds portfolio (US$1.316m)—representing US$173,000 in additional nominal wealth over a 40-year accumulation period.
- • A 10% allocation to private equity lifted the mean annual Sharpe ratio to 0.531 versus 0.462 for the baseline portfolio, demonstrating superior risk-adjusted returns across 10,000 simulated accumulation pathways using US market data from January 2010 through December 2024.
- • Venture capital ranked second among private markets with US$1.35m average end value and a Sharpe ratio of 0.493, while private debt, infrastructure, and real estate each underperformed the baseline on end value but delivered material volatility reduction and downside protection (fifth percentile outcomes of US$0.457m–US$0.458m versus US$0.414m baseline).
- • Private debt, infrastructure, and real estate reduced volatility of end accumulation values to US$0.812m–US$0.824m against US$0.939m for the baseline, and all five private market asset classes tested maintained Sharpe ratios above 0.5 when allocated at 10% within a target-date fund structure.
Summary
The CFA Institute Research and Policy Center released research in September 2026 demonstrating that private market allocations can materially enhance defined contribution plan outcomes, with private equity delivering the strongest performance. The study, titled "Private Markets in Retirement Plans: Returns, Risks, and the Importance of Plan Design," modeled 10,000 Monte Carlo accumulation pathways for a stylized target-date fund using US-dollar returns spanning January 2010 through December 2024. Researchers Raymond Ka-Kay Pang and Fan Yang tested five private market asset classes—private equity, venture capital, private debt, infrastructure, and real estate—against a baseline portfolio of public equities and government bonds.
Private equity produced the highest average end accumulation value at US$1.489m across all test pathways, delivering 13% outperformance relative to the baseline figure of US$1.316m. This translates to US$173,000 in incremental nominal wealth. The private equity allocation also delivered the strongest risk-adjusted return metric, with a mean annual Sharpe ratio of 0.531 compared to 0.462 for the baseline portfolio. Venture capital finished second among private markets with an average end value of US$1.35m and a Sharpe ratio of 0.493, demonstrating that growth-oriented private market strategies outpaced more defensive alternatives in the modeling framework.
The three defensive private market asset classes—private debt, infrastructure, and real estate—produced lower average end accumulation values than the baseline, ranging from US$1.293m to US$1.301m. However, these strategies delivered meaningful downside protection and volatility reduction. Each reduced the standard deviation of end accumulation values to US$0.812m–US$0.824m versus US$0.939m for the baseline, and each maintained Sharpe ratios above 0.5. Importantly, fifth percentile outcomes (representing downside scenarios) for private debt, infrastructure, and real estate clustered between US$0.457m and US$0.458m, compared to US$0.414m for the baseline, indicating superior tail risk management.
The modeling assumed a fixed 10% allocation to any single private market asset class, with the remaining allocation split to 27% public equities and 63% bonds throughout the 40-year accumulation period. The research underscores that private market inclusion can enhance retirement security through both return enhancement (private equity, venture capital) and risk mitigation (private debt, infrastructure, real estate) strategies, suggesting that plan design and asset class selection materially influence long-term participant outcomes.
Private equity produced the highest average end accumulation value at US$1.489m across all test pathways, delivering 13% outperformance relative to the baseline figure of US$1.316m. This translates to US$173,000 in incremental nominal wealth. The private equity allocation also delivered the strongest risk-adjusted return metric, with a mean annual Sharpe ratio of 0.531 compared to 0.462 for the baseline portfolio. Venture capital finished second among private markets with an average end value of US$1.35m and a Sharpe ratio of 0.493, demonstrating that growth-oriented private market strategies outpaced more defensive alternatives in the modeling framework.
The three defensive private market asset classes—private debt, infrastructure, and real estate—produced lower average end accumulation values than the baseline, ranging from US$1.293m to US$1.301m. However, these strategies delivered meaningful downside protection and volatility reduction. Each reduced the standard deviation of end accumulation values to US$0.812m–US$0.824m versus US$0.939m for the baseline, and each maintained Sharpe ratios above 0.5. Importantly, fifth percentile outcomes (representing downside scenarios) for private debt, infrastructure, and real estate clustered between US$0.457m and US$0.458m, compared to US$0.414m for the baseline, indicating superior tail risk management.
The modeling assumed a fixed 10% allocation to any single private market asset class, with the remaining allocation split to 27% public equities and 63% bonds throughout the 40-year accumulation period. The research underscores that private market inclusion can enhance retirement security through both return enhancement (private equity, venture capital) and risk mitigation (private debt, infrastructure, real estate) strategies, suggesting that plan design and asset class selection materially influence long-term participant outcomes.
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