Understanding Private-Market Benchmarks: A Practical Guide

When evaluating performance in public markets, understanding how a given index fared is straightforward. If an equity fund returned 8% in a year when the MSCI World Index returned 10%, the read is immediate: The fund underperformed. That benchmark is public, priced continuously throughout the day and based on real trades rather than estimates.

Private markets work differently. Private funds hold assets such as companies, loans and real estate that are not traded on exchanges. Without continuous pricing, performance is calculated from cash flows and internal valuations, reported infrequently and shaped by factors that differ across funds such as when the investment was made, what strategy the fund pursued and what economic environment it encountered along the way.

Understanding how private-market benchmarks are built, and what they can and cannot tell you, is foundational to evaluating drawdown fund performance with confidence.

A benchmark is a reference point. In the context of private markets, it answers one of two questions:

• Did this fund earn a return sufficient to meet my financial objectives?
• Did this fund perform well given what was achievable in the market at the time?

These are different questions, and they require different tools. The first is answered by a target, which is a fixed return threshold tied to a liability, spending rate or investor objective, such as inflation plus three percent. The second is answered by a benchmark: a measure of what comparable funds actually achieved during the same period, in the same strategy, under the same market conditions.

Some private-market investors may conflate targets and benchmarks. Keeping them distinct leads to sharper performance evaluation.

Three structural features make private-market benchmarking more complex than its public-market equivalent. 

In public markets, prices are set continuously by buyers and sellers on exchanges. In private markets, fund managers report the estimated value of their portfolios, called the net asset value (NAV), typically once per quarter, with a further delay of around one to three months after the reporting date.

This lag has practical implications. During periods of market stress, private-asset valuations may hold steady while public equivalents fall, not because private assets are unaffected, but because the marks have not yet been updated. It also means that the most recent benchmark figures you see typically reflect conditions from four to six months earlier. Any early releases on valuation should be taken as directional rather than final. As more funds report, those figures will be revised.

In public markets, benchmark data comes from exchanges and is observable by anyone. There is no private-market equivalent. Instead, private-market benchmarks are built primarily from data contributed by LPs (limited partners, who are the private-fund investors) or GPs (general partners, who are the fund managers).

This LP-sourced data includes the actual timing and size of capital calls and distributions, along with fund valuations. Because it comes from investor records rather than from fund managers directly, it mitigates selection bias questions that may arise in GP-provided data.

A private fund's vintage year is the year it first calls capital from investors. This single variable can have a meaningful effect on performance, because the economic environment a fund encounters shapes its returns as much as any decision a manager makes.

Consider two buyout funds with identical strategies. One began investing in 2006, deploying capital just before the global financial crisis. The other began in 2010, investing in the early stages of a recovery. Even with the same manager and the same sectors, their return profiles will look very different, and not because of skill differences, but because of timing.

This is why vintage year is one of the most important variables in benchmarking private drawdown funds. Comparing a fund to peers from a different vintage year can be misleading without accounting for that difference. A fund may appear to outperform or underperform primarily because of when it started investing, not how well it was managed. Using the right tools to compare funds properly is key to attaining a reliable benchmark.

Three benchmark types are commonly used to evaluate drawdown funds in private markets. Each answers a different question. 

*Public-market equivalent (PME) — a methodology that compares private market cash flows against what the same capital would have earned in a public index over the same period 

In practice, a complete performance picture often draws on more than one of these. Absolute return targets tell you whether objectives were met. Public-market equivalents provide context on opportunity cost. Private-market peer benchmarks tell you how the fund performed relative to what was actually achievable in that strategy and vintage. 

• A fixed hurdle has no structural relationship to what the market delivered. A fund can clear CPI plus three percent in a year when every fund in the market did far better or fall short in a year when the market as a whole struggled. The target tells you whether an objective was met; it does not tell you whether a manager added value. 

• Results depend on which public index is chosen as the comparator and on the exact dates used for cash flows, since even seemingly small differences in the timing selected for comparison can have an impact on calculation. Two analysts applying the same methodology to the same fund can arrive at different conclusions. Always ask what assumptions underpin the figure before drawing conclusions from it. Additionally, since public markets tend to be more volatile and respond more rapidly to shifting conditions, PME can experience significant fluctuations. 

• Benchmark quality depends heavily on the size and coverage of the underlying dataset. A benchmark built from a small number of funds, or one where underperforming funds are underrepresented, will give a skewed read on what the market actually delivered. When evaluating any peer benchmark, it is worth asking how many funds are included, which strategies they cover and whether data comes from investors or managers. Strategy matters alongside vintage here, since a venture fund and a buyout fund carry very different return profiles even in the same year. 

Most private-market benchmarks are updated quarterly, with a further reporting lag of one to three months. This means the most recent figure you see typically reflects data that is four to six months old. Early releases also tend to capture only the fastest-reporting funds. Treat the latest figures as directional; they will be revised as more funds report. 

Yes, this is more common than many investors expect and not limited to private-market benchmarks. A fund's relative performance depends on which benchmark it is compared against: the strategy definition, the vintage years included and the size of the underlying dataset all affect the result. A mid-market buyout fund compared to a broad private equity benchmark that includes venture capital and large-cap buyout will face a different reference point than one compared to a vintage-matched mid-market peer group. Always understand what a benchmark covers before drawing conclusions from the comparison. 

Vintage year dispersion refers to the wide variation in returns that can exist between funds from different years, even within the same strategy. A buyout fund from a recession vintage may deliver very different results from one that began investing during a period of strong growth — not because of manager skill differences, but simply because of timing. This is why pooling all funds together in a single benchmark, without accounting for vintage year, can be misleading. For a fair comparison, a fund should be measured against others that began investing in the same period.