What Is The PME Benchmark? (Private Equity Metrics)
A public market equivalent (PME) compares a private-equity fund’s dated contributions and distributions with what the same cash could have earned in a chosen public-market index. Kaplan–Schoar PME above 1.0 indicates a higher ending value than that modeled index investment, including the fund’s remaining value. PME is not a universal formula or a risk-adjusted verdict.
Imagine you are reviewing a fund report. It shows a strong private-equity return, but you want to know how that result compares with investing the same money in public markets over the same period. PME helps answer that question by accounting for when the fund called capital and when it returned cash.
I find the timing is often the part that first feels confusing. A contribution made early has more time to grow in a public index than one made later. PME adjusts for that difference, then compares the modeled public-market value with the private fund’s distributions and remaining net asset value.
PME Overview: Purpose, Variants, and Public-Market Benchmark Selection
A public market equivalent is a method for comparing private-fund cash flows with a public-market investment made on matching dates. It is a family of methods, not one universal calculation. To make a PME result meaningful, identify the specific method, index, currency, dates, and fee basis used.
What question does PME answer?
PME estimates how a public-market investment might have performed if it received the same capital on the dates a private fund received contributions. It also accounts for distributions returned by the fund and, in methods such as Kaplan–Schoar PME, the fund’s ending residual value.
It answers a relative wealth question: did the private fund’s value exceed the modeled public-market alternative? It does not, by itself, explain why, measure the extra return per year, or show whether the private fund took more risk.
Which PME variant is being reported?
A PME variant defines how the private fund’s cash flows are compared with index returns. Kaplan–Schoar PME (KS-PME) is commonly expressed as a ratio of adjusted private-fund value to adjusted contributions. Direct Alpha is a related method that expresses relative performance as an annualized rate. These measures are not interchangeable.
When you see “PME” in a report, check whether it means KS-PME, Direct Alpha, or another method. A result from one variant should not be directly compared with a result from another unless the difference is explained.
How should you choose the public index?
The public index is the market alternative used in the calculation. Choose an investable, broad-market total-return index that reasonably matches the fund’s geography, sector, and investment period. State the index name and currency, and make sure the return series includes reinvested distributions if that is the intended benchmark.
A mismatch can distort the comparison. For example, a US-focused fund compared with an index for a different region may produce a result that reflects market differences as well as manager performance. There may be no perfect index, so disclose the choice and its limits.
PME Calculation: Cash Flows, Residual NAV, and Interpretation
KS-PME moves each fund cash flow forward using public-index growth to a common end date. It then compares the adjusted value of distributions plus ending fund value with the adjusted value of contributions. The result is a ratio: above 1.0 suggests outperformance against that index, while below 1.0 suggests underperformance.
The Kaplan–Schoar PME formula
The KS-PME formula is:
[ \text{KS-PME}= \frac{\sum_i D_i(M_T/M_i)+NAV_T} {\sum_i C_i(M_T/M_i)} ]
Here, (D_i) is a distribution on date (i), (C_i) is a contribution on date (i), (M_i) is the public-index level on that date, and (M_T) is the index level on the chosen end date. (NAV_T) is the private fund’s residual net asset value (NAV) at that end date.
The ratio (M_T/M_i) shows how much the index grew between a cash-flow date and the end date. Multiplying each flow by that ratio puts it into end-date value terms. Keep the cash-flow units, dates, and index levels consistent. In this formula, contributions and distributions are entered as positive amounts in their respective parts of the calculation.
A worked example of KS-PME
Suppose a fund calls $100 when the index level is 100. Later, it distributes $40 when the index is 120. At the end date, the index is 150 and the fund reports an NAV of $80.
The adjusted distribution is (40 \times 150/120 = 50). The adjusted contribution is (100 \times 150/100 = 150). Therefore, KS-PME is ((50+80)/150 = 0.87), rounded to two decimal places.
In this example, the fund’s ending value, including the distribution and NAV, is below the modeled index value. That indicates underperformance against this particular public benchmark, on the stated inputs. It does not establish that the fund was a poor investment on every measure.
What does a PME result mean?
A KS-PME of 1.0 indicates parity with the modeled public investment. Above 1.0 indicates the fund’s adjusted distributions and residual NAV exceed adjusted contributions; below 1.0 indicates they fall short.
| KS-PME | Basic reading | What it does not prove |
|---|---|---|
| 0.87 | Below the selected index alternative | That the fund is unattractive under every measure |
| 1.00 | Equal modeled ending value | That risk, liquidity, or fees were equal |
| 1.15 | Above the selected index alternative | That the fund earned 15% per year or had better risk-adjusted returns |
KS-PME is a wealth multiple, not an annualized return. A value of 1.15 means the modeled private-fund value is 1.15 times the adjusted contributions; it does not mean a 15% annual return. Direct Alpha is one related annualized measure, but it answers the comparison in a different way.
Data Quality, Methodology, and Analytical Limitations
A PME result is only as dependable as its cash flows, end-date valuation, and benchmark choices. Before interpreting the number, confirm that the data cover the full period, use consistent dates and currency, and apply the same fee treatment. Then disclose the method and limitations so another reader can understand or reproduce the comparison.
Which data must be included?
Collect all dated contributions and distributions for the fund or portfolio being measured. Include the end-date NAV and specify the valuation date. Reconcile cash flows against source records, such as fund statements, rather than relying only on a summary multiple.
Also report whether the figures are gross or net of management fees, carried interest, and expenses. “Gross” generally means before certain investor-level costs; “net” reflects the costs specified by the reporting method. Do not compare gross PME with net PME as though the fee basis were the same.
A practical validation sequence
Use this workflow before drawing conclusions:
- Define the question: Set the fund or portfolio scope, measurement dates, currency, index, fee basis, and PME variant.
- Prepare the data: Gather dated contributions, distributions, and ending NAV. Check the dates and amounts against source records.
- Calculate and verify: Apply the selected method consistently. Recalculate independently or have another reviewer check the inputs and result.
- Explain the result: State the index, end date, fee basis, method, and key limitations. Compare with the 1.0 parity point, then add relevant context.
A practical diagnostic is to inspect the largest cash flows first. A date entered in the wrong year can change the index-growth adjustment and therefore the result. Confirm that the end-date NAV is for the same date used as (T).
What PME does not adjust for
PME does not automatically account for differences in leverage, liquidity, volatility, or risk. Private-equity funds may also have capital-call patterns and valuation practices that differ from daily priced public investments. A PME above 1.0 is therefore not proof of superior risk-adjusted performance.
The index matters, too. A different market, currency, or measurement period can change the comparison. If two reports use different indices or cash-flow coverage, their PME figures may not be directly comparable. Report those differences instead of presenting the numbers as a clean ranking.
Using PME in Investment Evaluation and Career Practice
PME is most useful as one part of a broader performance review. Pair it with measures such as IRR and TVPI, and explain what each adds. I use a simple rule when reviewing a result: first verify how it was built, then interpret what it says, and only then compare it with other evidence.
How PME complements other fund metrics
IRR is the annualized rate implied by the timing and size of fund cash flows. TVPI compares total value, including distributions and remaining NAV, with paid-in capital. KS-PME instead compares that value with a public-market alternative adjusted for the timing of cash flows.
| Measure | Main question | Key caution |
|---|---|---|
| KS-PME | Did the fund’s adjusted value exceed the selected public-market alternative? | Depends on index choice and does not measure risk |
| IRR | What annualized rate is implied by fund cash-flow timing? | Sensitive to timing and not a direct public-index comparison |
| TVPI | How does total fund value compare with paid-in capital? | Does not show how a public investment performed over the same dates |
| Direct Alpha | What annualized relative performance is implied against the chosen index? | A different PME method; state its calculation and assumptions |
These measures can tell different stories without any one being automatically wrong. A fund could have a high IRR but a KS-PME below 1.0 if its cash flows occurred during a period when public markets performed strongly. Read the measures together and check whether they use the same time period and fee basis.
Two scenarios that show why context matters
Consider two funds with the same KS-PME, but different benchmark choices. If one uses a total-return index that matches the fund’s market and another uses a less relevant index, the matching result is usually more informative. The number alone does not reveal that difference.
Now consider two reports for the same fund. One includes net cash flows and ending NAV; the other uses gross cash flows or a different valuation date. Even if both label the result “PME,” the figures do not describe the same comparison. Ask for the method and inputs before comparing them.
What to request in a PME report
For a report you can assess, look for:
- The PME variant, such as KS-PME or Direct Alpha
- The public index name, currency, and return type
- The measurement period and valuation date
- All contributions, distributions, and ending NAV, or a clear statement of coverage
- Whether results are gross or net of fees, carry, and expenses
- Any known limitations, including benchmark mismatch and valuation assumptions
If a report omits these details, request them before treating the result as evidence for or against an investment. The key takeaway: PME gives you a structured public-market comparison, but the assumptions are part of the result.
PME FAQs
What does PME stand for?
PME stands for public market equivalent. It describes methods that compare private-fund cash flows with a public-market investment over matching dates.
What is a good PME benchmark?
For KS-PME, 1.0 represents parity with the modeled public index. A value above 1.0 is higher relative value against that benchmark, but it is not a universal pass mark or proof of better risk-adjusted performance.
Does PME have one standard formula?
No. PME is a family of methods. Always identify the variant, such as Kaplan–Schoar PME or Direct Alpha, and avoid comparing unlike methods as if they were identical.
Is KS-PME an annual return?
No. KS-PME is a wealth multiple. It compares adjusted values at a common end date; it does not state an annualized excess return.
What is the difference between PME and IRR?
IRR is an annualized rate implied by the fund’s cash flows. PME compares fund cash flows with a public-market investment adjusted for the timing of those flows.
Does PME include the fund’s remaining value?
KS-PME includes the fund’s residual NAV at the measurement date. The report should state the NAV date and how the value was measured.
Should PME be gross or net of fees?
Either basis can be reported, but it must be clearly stated. Compare results only when their fee treatment is consistent or when the difference is explicitly explained.
Can a PME above 1.0 prove the fund was less risky?
No. PME does not automatically adjust for leverage, liquidity, volatility, or other risks. Use additional evidence before drawing conclusions about risk-adjusted performance.
Why does the public index matter?
The index represents the public-market alternative. A mismatch in geography, sector, currency, or dates can make the comparison less relevant or misleading.
What should I check first if a PME result seems wrong?
Check the PME method, cash-flow dates and amounts, end-date NAV, index series, and currency. Then confirm whether the figures are gross or net of fees and whether the measurement period matches the report.
(This article was written by one of our staff writers, Nathan Sterling. Visit our Meet the Team page.)
