What does the vintage evidence show?
That funds raised in different years produce very different outcomes while doing broadly the same thing. Buyout funds from the 2015 to 2017 vintages were generating roughly 2 percent internal rates of return as at 2025, dragging the ten-year buyout average down to about 6 percent, while 2022 to 2024 vintages showed about 15 percent, largely unrealised (McKinsey Global Private Markets Report 2026, February 2026, measuring performance as at 2025).
The concentration has been quantified most cleanly in venture, where the data set is longer. Across more than 1,000 funds spanning 2000 to 2022 vintages, 80 percent of returns were driven by between 22 and 30 percent of vintage years (StepStone Group, April 2026). Performance is concentrated in time rather than in thesis, and that finding is about venture rather than buyout.
In buyout the mechanism is visible directly in entry prices. Global buyout entry multiples peaked at 11.5 times enterprise value to EBITDA in 2021, and median entry reached a record 11.8 times in 2025 (iCapital, February 2026; McKinsey, February 2026, both labelled as measuring the years stated). Private equity annual returns averaged 4.4 percent over the three years to early 2026 against a 14.7 percent annual average from 2010 to 2024 (iCapital, February 2026).
None of these figures is a current-quarter print. They are published in 2026 and measure vintages stretching back two decades, which is the only way this question can be studied at all.
| Cohort | Entry conditions | Where it stands |
|---|---|---|
| 2015 to 2017 buyout | Pre-peak pricing with cheap leverage and an expanding exit multiple available | Roughly 2 percent internal rates of return as at 2025, held longer than underwritten, dragging the ten-year average to about 6 percent |
| 2020 to 2021 buyout | Record entry at up to 11.5 times in 2021, on five to six year hold assumptions | Only 16.6 percent of the 2021 cohort exited four years after investment, against 32.3 percent of the 2017 cohort |
| 2022 to 2024 buyout | Higher rates, less leverage, lower entry competition | About 15 percent internal rates of return as at 2025, largely unrealised |
| 2025 to 2026 buyout | Record median entry of 11.8 times in 2025, debt at 37 percent of the entry multiple | Too early to measure; buying at the top of the recorded entry range with both historical tailwinds absent |
Why does entry timing dominate?
Because the entry multiple is the single largest determinant of a fund-level return, and it is fixed on the day the transaction closes. Everything a manager does afterwards operates on top of a number it cannot revisit.
The compounding factor is what happens to the exit multiple. The spread between entry and exit averaged about four turns across 2010 to 2020 and compressed to about 1.6 turns from 2020 onward (iCapital, February 2026). A cohort that bought expecting expansion and sold into compression absorbed the entire difference in its returns.
The second tailwind disappeared at the same time. Leverage and multiple expansion together produced 59 percent of returns on deals done between 2010 and 2022, and debt has since fallen from 44 percent of the entry multiple in 2016 to 37 percent in 2025 (StepStone analysis in McKinsey, February 2026). Two of the three historical return sources stopped contributing for everyone at once, regardless of strategy.
This is why vintage beats strategy in the data. Strategy choice varies the return by a margin. Entry conditions vary it by a multiple, and they apply to every manager in the cohort simultaneously.
“An owner sells once. A fund buys across a vintage and averages out. That asymmetry is the whole argument for being ready early: the fund can afford to be wrong about the year because it will deploy across four of them, and the seller who mistimes by eighteen months has no second entry to average against.”
What does this mean for a seller rather than an investor?
That you are the entry price in somebody else's vintage. Every finding above is a statement about what buyers paid, which is the same number as what sellers received. A record entry multiple year is a record exit multiple year for the people on the other side of those transactions.
That reframes the usual anxiety. Owners worry about selling at the wrong time in a way that assumes the wrong time is knowable in advance, when the more useful observation is that the market's own participants are measurably poor at it. Manager-side optimism has been a reliable contrary indicator for three consecutive years, with a survey of managers in December 2025 expecting more exits in 2026 that the first-half actuals falsified (Bain and Company and StepStone Group, 2026 Private Equity GP Outlook, published 2 March 2026, against PitchBook first-half 2026 data).
It also puts the current environment in a specific light. Entry multiples are at a record, which is favourable to a seller and unfavourable to a buyer, while the two financing tailwinds that supported the last decade have gone. A seller transacting into that combination is selling into strong pricing and thin buyer economics at the same time, which is precisely the dispersion the market has been reporting: very high multiples for A-grade targets and no bids for lower-grade ones (ACG and GF Data, Q3 2026 Market Pulse Survey, published 15 July 2026).
The practical consequence is that quality determines participation and timing determines price. Neither substitutes for the other.
Can an owner time this?
No, and the useful response is readiness rather than forecasting. The evidence that timing beats strategy is also evidence that timing is difficult, and nothing in the published record supports a claim that any participant reliably calls the turn.
What can be established is the cost of not being ready. Exit preparation is advised to begin twelve to twenty-four months before a sale in order to improve valuations, which means an owner who starts preparing when conditions improve arrives eighteen months after the improvement, alongside everyone else who did the same (EY, Global Private Equity Exit Readiness Study 2026, published 28 July 2026).
The waiting calculus has also changed in a way that is documented rather than speculative. For eighteen months delay was treated as a free option because rate cuts were expected. Middle-market dealmakers are now discussing an impending hike and pressure to complete transactions before rates rise (ACG and GF Data, 15 July 2026), and three-month SOFR forwards price 4.04 percent at the end of 2027 against 3.76 percent in early August 2026 (Blue Gamma, 4 August 2026).
So the answer is to be in a position where the decision is available. A business with thirty-six months of clean, normalized monthly financial statements and an early quality of earnings report can go to market in a quarter rather than a year (Capstone Partners, Capital Markets Update, 4 June 2026). That is not market timing. It is having the option when the market provides one.
Where is the cycle now?
At record entry pricing with the historical supports removed, and with a large cohort running out of time. Funds from 2020 and 2021 deployed at peak valuations on five to six year hold assumptions, which places their natural exit windows in 2025 to 2027 (Allianz Research, Private equity in transition, 20 February 2026, published before the second-quarter 2026 market shock and labelled accordingly).
The cohort is not clearing on schedule. Four years after investment, only 16.6 percent of the 2021 cohort had exited against 32.3 percent of the 2017 cohort (PitchBook, 2026 US Private Equity Outlook, published 3 December 2025, as at 31 October 2025). Meanwhile US private equity backed inventory rose to 13,509 companies as at 30 June 2026 (PitchBook, Q2 2026 US PE Breakdown, 6 July 2026).
That is the supply event worth positioning against. Sponsor-owned competitors in most sectors are contractually approaching the end of their hold periods at the same time, and some sponsors are already accepting lower valuations simply to generate the realised returns needed to raise their next vehicle (PwC, US Deals 2026 midyear outlook, 17 June 2026).
For a private owner the conclusion is unglamorous and actionable. You cannot choose the vintage you sell into, and you can choose whether you are ready to move inside it when a window appears rather than eighteen months after it closes.
As of August 2026
Sources: McKinsey and Company, Global Private Markets Report 2026, February 2026, for 2015 to 2017 vintage buyout funds generating roughly 2 percent internal rates of return as at 2025 and dragging the ten-year average to about 6 percent, for 2022 to 2024 vintages showing about 15 percent largely unrealised, for the record 11.8 times median entry multiple in 2025, and for StepStone analysis attributing 59 percent of returns on 2010 to 2022 deals to leverage and multiple expansion with debt falling from 44 percent of the entry multiple in 2016 to 37 percent in 2025; iCapital, February 2026, for global buyout entry multiples peaking at 11.5 times in 2021, for private equity annual returns averaging 4.4 percent over the three years to early 2026 against a 14.7 percent annual average from 2010 to 2024, and for entry-to-exit spread compressing from about four turns across 2010 to 2020 to about 1.6 turns from 2020; StepStone Group, April 2026, for 80 percent of venture returns across more than 1,000 funds from 2000 to 2022 vintages being driven by between 22 and 30 percent of vintage years, a venture finding rather than a buyout one; Bain and Company and StepStone Group, 2026 Private Equity GP Outlook, published 2 March 2026, for manager expectations of more exits in 2026, against PitchBook first-half 2026 data that did not support them; ACG and GF Data, Q3 2026 Market Pulse Survey, published 15 July 2026, for the dispersion between A-grade and lower-grade targets and for the rate-direction commentary; EY, Global Private Equity Exit Readiness Study 2026, published 28 July 2026, for the twelve to twenty-four month preparation runway; Blue Gamma, 4 August 2026, for three-month SOFR forward pricing; Capstone Partners, Capital Markets Update, 4 June 2026, for the thirty-six months of clean normalized monthly financial statements standard and early quality of earnings guidance; Allianz Research, Private equity in transition, 20 February 2026, for 2020 and 2021 vintages deploying on five to six year hold assumptions with natural exit windows in 2025 to 2027, labelled as predating the second-quarter 2026 market shock; PitchBook, 2026 US Private Equity Outlook, published 3 December 2025, as at 31 October 2025, for cohort exit rates; PitchBook, Q2 2026 US PE Breakdown, 6 July 2026, for US private equity backed inventory as at 30 June 2026; PwC, US Deals 2026 midyear outlook, 17 June 2026, for sponsors accepting lower exit valuations to generate realised returns.