Signing Commitments Is the Beginning of the Build
Building a mature venture allocation takes several years of commitments. Managers call cash over time, and companies grow and exit at different speeds. One vintage depends on a narrow market period. A longer plan creates a mix of new funds, growing holdings and funds returning cash. That mix takes time to form after the target is approved.
Carta's Q4 2025 VC fund performance report shows how much capacity can remain unused in a young cohort. Its sample of 2025-vintage funds still held 72% of capital as dry powder at year-end 2025. A signed commitment can count against policy limits long before most of the capital becomes portfolio NAV.
Maturity comes from overlapping vintages
| Years of commitments | What the programme may contain | Main limit |
|---|---|---|
| 1 year | Mostly new funds with little DPI | High dependence on one market cycle |
| 3 years | Several young vintages and first manager comparisons | Most value remains unrealized |
| 5 years | Early evidence of winners, losses, and follow-on skill | Distributions may still be limited |
| 10 years | A mix of deployment, maturing NAV, exits, and re-up history | Old and new strategies may no longer match |
With one vintage, the programme depends on one pricing and fundraising market. Five vintages spread entry conditions. Ten can include new funds investing, mature funds holding NAV and older funds returning cash. That mix makes cash flows easier to understand and reduces dependence on one market period.
Early values can make a young programme look stronger or weaker than its cash record supports. A new funding round may lift the first vintage; write-downs may lower it. Neither settles the long-term result. As more evidence arrives, the LP has a firmer basis for changing its pace.
Commitment pace shapes the build
Reaching a $100 million commitment target in 1 year puts it all in one vintage. Spreading it across 10 years means $10 million a year before re-ups, cash returns and NAV changes. The slower plan takes longer to build exposure but offers a wider mix of entry conditions.
Carta reported that 2024-vintage funds still had 53% of commitments unspent at year-end 2025. The allocation can remain call-heavy well after a vintage enters the programme.
A fund may invest over 5 years and exit over the next 5 to 10. Cash returns may become steadier only when several vintages overlap. A mature programme still holds young funds. What changes is the mix of ages around them.
Re-ups can reshape the ladder
Managers that raise again quickly or launch larger funds can absorb more of the annual budget. Keeping the relationship, writing the same dollar cheque and maintaining the same share of the next fund are different choices. Each has a different effect on the programme.
As the allocation matures, older vintages may return cash while newer ones call it. Exits can still slow across several vintages at once. Maturity gives the LP more history to plan with, but does not guarantee a strong distribution market every year.
A $100 million venture portfolio requires $100 million when built in one year. Over three years, the annual amount falls to $33.3 million. Five years requires $20 million per year, while ten years requires $10 million.
Commitment Pace to Build a $100M Portfolio
Longer buildout periods reduce vintage concentration but require patience before the allocation feels mature.
View timing across vintage years data
| Buildout period | Target portfolio | Annual commitments |
|---|---|---|
| 1 year | $100M | $100.0M |
| 3 years | $100M | $33.3M |
| 5 years | $100M | $20.0M |
| 10 years | $100M | $10.0M |
Why Fund Age Changes the Evidence
Paper gains in a young fund reveal something different from cash returned by an older one. A history of commitments and cash flows gives the committee a basis for judging each group at its own age. The programme can be mature even while some holdings remain unsold.
Frequently Asked Questions
How many years does a venture portfolio need?
It often takes 5 to 10 years of commitments to cover several markets and build a better mix of calls and cash returns. The time needed depends on how fast the LP commits, which funds it uses and whether it buys older stakes through secondaries.
Can an institution build faster?
Buying secondary shares or seasoned fund interests can speed up the build. Each still needs checks on price, selection and the time to cash out. Investing faster also puts more of the programme into today's market conditions.