A $250,000 fund commitment from a family office can matter more to an emerging venture manager than a $2 million check from an endowment. Paul Lee, a former GP who now writes about venture from the LP side, argued on X on September 8 that a small LP may deploy several times its commitment alongside a manager through special purpose vehicles, and that any GP with limited SPV capacity should remember who backed the fund early and moved quickly when opportunities appeared.

Lee’s core framing , relayed from a GP advising his own LPs, starts with $1 into funds and layers co-investment capacity on top. Adeo Ressi, CEO of Decile Group, the parent of the VC Lab accelerator, replied that mid-sized investors like the model more and more. Decile Group accelerates first-time fund managers, so Ressi sees the LP conversations behind hundreds of debut funds.

The Q2 2026 PitchBook-NVCA Venture Monitor found that Andreessen Horowitz, Thrive Capital and Founders Fund together took 48.1% of all capital raised, while first-time fund formation ran at its slowest pace since 2016. PitchBook analyst Max Navas had already flagged in 2023 that endowments and pensions were committing less to emerging managers and recommitting at lower rates, with the average emerging fund shrinking to $41.7 million. Institutional money has not come back to the bottom of the market, it has gone to six or seven brand names.

Family offices are the counterweight, and they behave differently from pensions. The UBS Global Family Office Report 2026 surveyed 307 offices with an average net worth of $2.7 billion and average assets of $1.3 billion, and found 60% plan to change strategic asset allocation within 12 months, the highest share UBS has recorded. PwC’s Family Office Deals Study shows the share of club deals , where families invest alongside others rather than alone, rose from 58% in late 2015 to 75% in the first half of 2023 and still stood at 69% in the first half of 2025. In startups specifically, PwC attributes 31% of investments to family offices, with 83% executed as club deals.

That preference for shared deals is exactly what an SPV delivers; Carta’s data shows the annual count of new SPVs on its platform rose 116% over five years, and 18% of vehicles formed between 2016 and 2023 exceeded $10 million, a size bracket dominated by venture and private equity firms rather than syndicate leads. The vehicles are also getting more expensive. Among SPVs above $10 million, the share charging management fees rose from 41% in 2021 to 67% in 2023, while new SPV formation fell 34% in 2022 and another 41% in 2023, tracking the broader venture downturn.

Put the two datasets together and the trade Lee describes becomes clear. The family office writes a modest fund check that buys a seat at the table: quarterly reporting, portfolio visibility and a relationship with the GP before the GP is famous. The GP treats SPV allocation as scarce currency and routes it to LPs who committed early, answered emails and wired within days. Both sides get concentration where they have conviction and diversification where they do not. The GP also gets something the fund LPA never promised: a second pool of capital to defend pro rata in a winner without dilution of the fund.

SPV-heavy relationships invite adverse selection, because GPs tend to offer co-investment on the rounds they could not fill from the fund. Fee stacking is real once two thirds of large SPVs carry management fees on top of carry. And a $250,000 commitment that becomes $1 million of SPV exposure gives the family office a portfolio that looks nothing like the fund it underwrote. Lee’s framing solves a GP fundraising problem first and an LP portfolio problem second.

For emerging managers this means the following: Underwrite each LP by total deployable capital over a fund cycle, not by the number on the subscription document, and keep a written record of who moved fast. Second, publish an SPV allocation policy before Fund I closes, with tiers tied to commitment timing and responsiveness, so favoritism becomes process. Third, pre-form the legal and administrative shell for co-investment vehicles so a close can happen in under two weeks, because speed is the asset family offices are paying for. Fourth, report SPV distributions separately from fund distributions, since blended numbers will not survive the diligence of a second family office.

For family offices, the asks are simpler; negotiate co-investment rights and allocation priority in the side letter rather than relying on goodwill. Cap SPV exposure per manager as a multiple of the fund commitment. Benchmark every SPV fee proposal against Carta’s numbers before signing.

The market Lee and Ressi are describing is a redistribution of power inside venture, not a new asset class. As long as three firms absorb nearly half of all committed capital, emerging managers will build their LP base one $250,000 relationship at a time and monetize loyalty through deal-by-deal vehicles. The LPs who understand that the fund is the entry ticket, not the whole ride, will own the best access to the next generation of managers before institutions decide those managers are safe.