What Is a Co-Investment?
A co-investment is a direct minority investment in a single company, made by a limited partner alongside the private equity or venture fund leading the deal. Rather than gaining exposure only through the fund's pooled portfolio, the LP puts additional capital into one specific transaction, usually through a dedicated co-investment vehicle that the general partner controls.
The economics are the main attraction. A typical buyout fund charges a 2% management fee and 20% carried interest, while co-investments are commonly offered at reduced economics or entirely fee-free and carry-free. That difference can add several hundred basis points to an LP's net return on the same underlying deal, which is why large pensions and sovereign wealth funds negotiate hard for co-investment rights.
How Co-Investments Work
Co-investment opportunities usually arise when a deal is too large for the fund alone. Concentration limits in the fund's partnership agreement might cap any single position at 10% to 15% of committed capital, so if a GP wins a deal requiring a $600 million equity check but can only fund $400 million, it offers the remaining $200 million to select LPs rather than bringing in a rival sponsor.
The GP typically syndicates the opportunity on a tight timeline, sometimes just two to four weeks, which favors LPs with in-house deal teams that can underwrite quickly. Co-investors generally sign the same terms as the fund, invest through a sidecar vehicle, and exit whenever the sponsor exits. Access is usually negotiated upfront in a side letter and often favors the fund's largest or earliest investors.
Why Co-Investments Matter
For LPs, co-investing lowers blended fees, deepens exposure to the sponsor's best ideas, and builds internal deal-evaluation skills. The trade-off is adverse selection risk: academic studies have found mixed results on whether co-investments outperform, partly because LPs may be shown deals that are simply too big rather than the highest-quality ones, and single-deal bets remove the diversification a fund provides.
For GPs, offering co-investment strengthens LP relationships, helps close larger transactions without a co-sponsor, and stretches fund capacity. If you are recruiting for private equity or an LP-side role, expect questions about why co-investments exist and how their fee structure changes net returns. Being able to walk through the concentration-limit scenario above signals real fund-mechanics fluency.
