The call comes in on a Tuesday. Your GP has a deal. They are offering you the chance to invest directly alongside the fund, outside the main vehicle, at reduced fees. That is co-investment. According to StepStone's 2024 LP survey, 50 percent of limited partners currently participate in co-investment programs. Another 59 percent say they plan to increase their allocation over the next three years. The math on why is not complicated.
What co-investment actually means
A co-investment is a direct investment by an LP into a single portfolio company, made alongside the GP's main fund. You are not investing through the fund vehicle. You are writing a separate check into the specific deal, on top of your existing fund commitment.
The GP acquires the company. You come in as a co-investor on that same deal. If the company exits at 3x, you made 3x, same as the fund, but under a different fee arrangement.
This is different from a direct investment, where you source and underwrite the deal yourself without a GP's involvement. In co-investment, the GP is still the operator. They manage the company. They run the value creation plan. You are riding alongside, with access to their deal flow, their diligence, and their operating team.
Understanding the difference between co-investment and fund participation is foundational to the decision. The structure of a PE fund determines what your LP commitment actually gets you. Co-investment layers on top of that base relationship.
The fee economics
Standard PE fund economics run at two percent annual management fee and twenty percent carried interest. On a $1 million LP commitment, that is $20,000 per year in management fees, plus the GP takes 20 percent of profits above the hurdle rate.
Co-investment deals typically carry zero management fee and zero or reduced carry. Over a five-year hold, the fee savings on a $500,000 co-investment run to $50,000 in avoided management fees alone. If the deal returns 2.5x gross, the carry savings add another meaningful number back in your pocket.
Cambridge Associates estimates the difference at 200 to 400 basis points annually versus standard fund economics. That compounding over a seven-to-ten year fund lifecycle is not trivial for a family office or a high-net-worth investor who is trying to make private equity work at scale.
The preferred return and carried interest mechanics in fund structures exist for good reasons. Co-investment does not eliminate those protections for the GP; it just structures your specific check differently.
Why GPs offer it
Co-investment is not charity. GPs offer it for three reasons.
First, deal size. A GP running a $200 million fund may find a target that requires $60 million of equity. The fund can cover $40 million. The remaining $20 million needs to come from somewhere. Co-investors fill that gap without requiring the GP to raise a new fund or miss the deal.
Second, relationships. Offering co-investment is a competitive advantage when GPs are raising their next fund. LPs who co-invest are stickier. They are more engaged with the portfolio. They are more likely to re-commit in Fund IV.
Third, speed. A co-investment with a known LP who can close in 72 hours is worth more to a GP in a competitive deal process than a cleaner structure that takes six weeks to syndicate.
According to a 2025 analysis by Torys LLP, 82 percent of PE firms now offer co-investment rights to their LPs. Access is no longer reserved for the largest endowments and sovereign wealth funds. If you are an LP in an institutional-quality fund, the opportunity likely exists. Whether you are ready to evaluate it is the real question.
The adverse selection question
Here is the concern: GPs may offer co-investment on deals they cannot fill internally. The weaker deals, the ones other LPs passed on or where the GP has less conviction, end up as co-investment opportunities. You get the leftovers.
The academic literature on this has shifted. A 2015 paper by Fang, Ivashina, and Lerner studied 179 co-investment deals and found that co-investments underperformed fund investments by a meaningful margin. That paper had real influence on how institutions thought about adverse selection risk.
More recent data tells a different story. A 2020 analysis by Braun, Jenkinson, and Schemmerl found co-investments experienced an 18.1 percent loss rate versus 25.7 percent for non-co-investments. Evli's 2026 analysis of over 8,200 deals found no systematic adverse selection in the data.
The most likely explanation is market correction. LPs have gotten more sophisticated about evaluating co-investment terms. GPs now understand that offering a bad deal to a co-investor poisons the relationship. The incentive structure pushes toward offering co-investment on deals where the GP needs more equity capital, not deals they want to offload.
That said, the risk has not disappeared entirely. The GP's specific motivations in a given deal still matter. Ask the question directly. What is driving the need for co-investment capital on this particular transaction? A clear answer is a good sign. A vague one is not.
What to negotiate before you wire
Most GPs present co-investment opportunities with a tight timeline. Forty-eight to seventy-two hours to commit is common. That speed is real, not manufactured. Deals have closing dates. The GP cannot wait three weeks for you to run a full diligence process they already completed.
Before you agree, get answers on four things.
Information rights. As a co-investor, you are not in the fund. You may not receive the same quarterly reporting, board observer rights, or financial statements the fund receives as a portfolio shareholder. Negotiate information rights explicitly, in writing, before closing.
Pro-rata rights. If the GP makes a follow-on investment in the same company, do you have the right to participate at your existing ownership percentage? Follow-on rounds can dilute your position significantly. Pro-rata protection matters more than most first-time co-investors expect.
Transfer rights. Can you sell your co-investment position before the exit? Most co-investment agreements include transfer restrictions and rights of first refusal. Know the lockup terms and any tag-along provisions before you sign the subscription agreement.
Indemnification. Fund agreements typically indemnify the GP and management company against litigation tied to the portfolio company. Your co-investment side letter needs equivalent language. Without it, you may carry legal exposure the main fund does not.
The Institutional Limited Partners Association publishes standard co-investment due diligence templates and best practice guidance. Use them as a baseline before you negotiate.
How to get access
Co-investment opportunities flow to existing LPs who have demonstrated they can close fast and do the work. They do not flow to people who call a GP asking for deals.
Build the LP relationship first. Commit to the fund. Show up for every portfolio update call. Do the diligence on every deal they show you, including the ones you pass on. Deliver a clear yes or no on time. GPs track which LPs engage seriously. That reputation, built over two to three years, gets you the call on the next co-investment.
For family offices and accredited investors at the individual level, the path typically starts with a first-close fund commitment. Some GPs will not offer co-investment to LPs until they have participated in at least one full fund cycle together. That is not gatekeeping. It is the GP protecting their portfolio companies from co-investors who cannot add value beyond a check.
The operator perspective
At Patriot Growth Capital, we think about co-investment differently than a passive institutional LP would. We are operators. When a co-investment deal comes into our pipeline, we evaluate whether we can contribute something beyond capital: management team introductions, operational process improvements, supply chain relationships, or simply the credibility that veteran-led operating experience brings to a management team under pressure.
A veteran operator co-investing alongside a GP is not just capital. They are a resource the GP can reach when the portfolio company runs into headwinds, which every portfolio company does at some point. That distinction matters to GPs who build real operating businesses rather than financial structures alone.
Co-investment is not for every accredited investor. It requires the ability to independently underwrite a deal, even if the GP is doing the primary diligence. It requires liquid capital outside your existing fund commitment. It requires the relationships that take years to build properly.
But for the LP who has done the work, co-investment is one of the cleaner ways to access PE-quality returns. No management fee. Reduced carry. Direct exposure to the specific deals your GP has the most conviction on.
The economics are the reason 50 percent of serious LPs now participate. The other 50 percent are still building the relationships that get them the call.
Frequently Asked Questions
What is a PE co-investment and how does it differ from investing through a fund?
A co-investment is a direct investment by an LP into a single portfolio company, made alongside the GP's main fund, outside the main vehicle. You write a separate check into the specific deal on top of your existing fund commitment. The GP still manages the company and runs the value creation plan.
Why do co-investments typically carry lower fees than standard fund participation?
Co-investment deals typically carry zero management fee and zero or reduced carried interest, compared to the standard two percent annual management fee and twenty percent carry in a PE fund. Cambridge Associates estimates the fee savings difference at 200 to 400 basis points annually versus standard fund economics. That compounding over a seven-to-ten year fund lifecycle is significant for family offices and high-net-worth investors.
Why do GPs offer co-investment opportunities to their LPs?
GPs offer co-investment for three main reasons: deal size constraints, relationship building, and speed. A fund may find a deal requiring more equity than the main vehicle can cover, and co-investors fill that gap. Co-investors are also stickier LPs who are more likely to re-commit to the next fund.
What terms should an LP negotiate before committing to a co-investment?
Negotiate information rights, pro-rata rights for follow-on investments, transfer rights and lockup terms, and indemnification language equivalent to what the main fund carries. Co-investment opportunities typically arrive with a 48-to-72-hour commitment window, so knowing what to ask for before the call comes is essential.
