The case for private markets: Expanding the opportunity set

Private markets can broaden long-term portfolios beyond public stocks and bonds, but their illiquidity, complexity, valuation uncertainty, leverage, and dependence on manager selection make them complements rather than replacements.

• Public equity indexes have become more concentrated, while companies are staying private longer: the average age at IPO rose from 8.0 years between 1980 and 2000 to 11.3 years since 2001.
• Private equity offers access to companies unavailable in public markets and can create value through active ownership, but manager outcomes vary widely: for 2005–2020 vintages, median IRRs ranged from 2.0% for all private capital to 29.1% for venture capital, with top-to-bottom-quartile dispersion as high as 32.3 percentage points for megafunds.
• Private credit provides negotiated loans with customized rates, collateral, repayment terms, and downside protections, as banks’ regulation, balance-sheet priorities, and risk tolerance push some borrowers toward nonbank lenders.
• Real assets such as housing, logistics, broadband, energy infrastructure, hospitals, and data centers can generate income and diversification, while some contracts or rents may adjust with inflation; the protection depends on the asset, contract, costs, demand, and financing.
• Private markets involve years-long capital commitments, uncertain cash flows, non-continuous valuations, fees, operational complexity, leverage, and timing risk; the article also cites an estimated USD 15 trillion infrastructure funding gap through 2040.

Takeaway: Investors may use private equity, private credit, and real assets to expand growth, income, and diversification opportunities, but prudent allocation requires careful manager selection, underwriting, oversight, and portfolio construction, with no assumption that smoother valuations mean lower risk.