Public Market Equivalent for Venture Capital

Hamilton Lane's portfolio analysis uses PME to compare private-market vintage returns with a public equity alternative. PME reframes private-market returns as an opportunity-cost question. A 15% private-fund IRR is less impressive if a comparable public index produced a similar result over the same cash-flow period.

Hamilton Lane describes a 15% IRR example as attractive only after comparing it with the public-market return available over the same period.

PME Matches the Timing of Venture Cash Flows

Public market equivalent, or PME, asks what would have happened if the same contributions and distributions had been invested in a public index instead of a venture fund. It adjusts for timing, which a simple comparison between venture IRR and stock-market return does not. A PME result above 1.0 generally indicates that the private investment outperformed the chosen public index under that method. But there are several PME methods, and they do not all produce the same form of answer.

Why Timing Has to Match

An LP does not invest the full commitment on day one. Capital is called over time and distributions arrive at irregular points. A fair public comparison should buy the index when the venture fund calls capital and sell the index when the venture fund distributes cash. This removes a common mistake: comparing a fund's since-inception IRR with a public index return measured over a broad calendar period. The cash was not all invested for the same length of time.

Common PME Approaches

PME methods answer related but different questions
Method	Output	Simple reading	Caution
Kaplan-Schoar PME	A ratio	Above 1.0 usually means private outperformance	Result depends on the index and cash-flow data
Long-Nickels PME	An IRR-like result	Compares private IRR with a synthetic public investment	Can create issues when distributions are large
PME+	An adjusted public-market IRR	Scales distributions to avoid some Long-Nickels problems	Scaling adds another assumption
Direct alpha	An annualized spread	Estimates private return above or below the index	Still depends on method and index choice

The Index Choice Is Part of the Conclusion

A broad equity index may reflect the LP's liquid opportunity cost. A technology-heavy index may better match a software-focused venture fund but can also make the benchmark harder to beat. A small-cap index may fit company size yet differ sharply in sector and profitability. There is no neutral index. The investment memo should explain why the chosen index fits the decision and show how the result changes with at least one reasonable alternative.

PME Does Not Solve Every Benchmark Problem

PME compares cash-flow performance with public markets. It does not say whether the fund beat similar venture funds, whether the manager's marks are sound, or whether the result came from repeatable skill. It also inherits any uncertainty in the fund's remaining NAV. For a young fund with little DPI, PME can be driven largely by the reported value of private companies. The result should be read next to TVPI, DPI, RVPI, fund age, and the age of the largest marks.

What LPs Should Record

PME method: Name it; "PME" alone is incomplete.
Public index: Explain why it matches the opportunity cost.
Cash-flow dates: Use actual calls and distributions.
Valuation date: Match the NAV and index measurement date.
Show whether the conclusion changes with another reasonable index.

PME is most useful as a second lens. It tells the LP whether illiquidity and manager selection produced more value than a timed public-market alternative.

How PME Works

PME matches each private cash flow with the public index on the same date. A $10 million capital call is treated as if $10 million were invested into the public index on that same date.

Different PME methods handle cash flows differently. Carta explains at least 3 PME approaches, including Kaplan-Schoar PME, PME+, and Direct Alpha, each with different handling of cash flows and ending value.

Interpret PME Carefully

The result can be read in straightforward terms. A 1.20x KS-PME means the venture fund created 20% more value than the public benchmark under that PME method; a 0.90x result means it lagged by 10%.

PME Interpretation Range

PME is only as useful as the benchmark and cash-flow data behind it.

Range tableApproach

0.90x PMEBelow benchmarkPublic market did better.

1.00x PMEIn lineNo measured premium.

1.20x PMEAbove benchmark20% measured premium.

View PME interpretation data

Data and assumptions for PME interpretation range
KS-PME result	Interpretation	Caution
0.90x	Fund lagged the selected public benchmark.	Check whether benchmark, vintage, and cash-flow data are appropriate.
1.00x	Fund matched the selected public benchmark.	Does not show an illiquidity premium.
1.20x	Fund exceeded the selected public benchmark by 20% under this method.	Still review DPI, residual value, and concentration.

Approach based on common KS-PME interpretation. PME method choice, benchmark selection, residual value, valuation policy, and cash-flow timing can change the result. Source: Carta PME explainer.

Frequently Asked Questions

Which public index should LPs use?

It depends on the investment plan: A broad equity index may be suitable for total-portfolio opportunity cost, while a technology-heavy index may better reflect venture beta.

Can PME be calculated before exits?

Yes, but with caution: The ending NAV is still an estimate, so PME is more reliable when more value has been realized.

Public Market Equivalent for Venture Capital