What is a vintage year?
A fund's vintage year is the calendar year in which it begins deploying capital — usually pegged to the first investment or the first capital call, though some data providers use the year of final close. It is the cohort label a fund carries for its entire life.
The point of vintage is comparability. A fund that bought at 2007 prices and a fund that bought in 2009 faced completely different entry multiples, credit conditions, and exit windows. Comparing their returns head-to-head tells you little. Comparing each against other funds of the same vintage tells you whether the manager actually outperformed the hand they were dealt.
Because vintage tracks deployment rather than fundraising, two funds that closed in the same year can carry different vintages if one was slow to invest. Practitioners care which definition a benchmark uses before reading too much into a quartile ranking.
Why vintage drives benchmarking
Limited partners almost never judge a fund's IRR in isolation. They judge it against the vintage cohort, typically by quartile.
- Assign the vintage. The fund is slotted into a year based on first investment or first call, depending on the benchmark provider's convention.
- Pull the peer set. All funds of the same strategy and geography raised in that year form the comparison universe.
- Rank by metric. The fund's net IRR, TVPI, and DPI are ranked into quartiles against that universe.
- Read in context. A 12% net IRR is top-quartile in a brutal vintage and bottom-quartile in a vintage that rode a bull market to exit.
This is why a manager raising a new fund leads with vintage-adjusted quartile rankings, not raw return numbers — the raw number is meaningless without the cohort.
Vintage diversification
Because no one can time which vintages will be strong, large LPs deliberately spread commitments across vintage years — a steady annual pacing program rather than a lump-sum bet on one cohort. This smooths exposure to entry-price cycles and keeps the portfolio's J-curve staggered, so distributions from mature funds help fund the early drawdowns of newer ones.