Many portfolios default to full liquidity under the assumption that illiquidity equals risk. This paper challenges that view.
The illiquidity premium exists because most capital demands flexibility. Investors willing to commit capital for longer periods are compensated for that patience. Avoiding private markets entirely may feel prudent, but it carries a measurable opportunity cost that compounds over time.
Our analysis estimates a 150 to 300 basis point annual premium across private markets. A 200 basis point return differential can translate into nearly 50 percent more cumulative wealth over 20 years. For larger portfolios, the difference becomes material.
We also examine how selective private allocations can improve diversification, reduce public market correlation, and introduce inflation-sensitive cash flows through assets such as farmland and lower middle market private equity.
The question is not whether investors can tolerate some illiquidity. It is whether they can afford to forgo the premium altogether.