Co-invest fund is a dedicated investment vehicle that commits capital to one or a few deals alongside a sponsoring GP’s main fund.

How it works

When a flagship fund hits concentration limits or wants LP allies on a large check, the GP may raise a co-invest fund or SPV for that transaction. LPs in the main fund often get pro rata co-invest rights; outsiders may join subject to conflicts policies. Economics vary: many co-invest vehicles charge low or zero management fees and reduced carry compared with the core fund. The co-invest fund signs the same round documents or a parallel side letter with aligned terms. For the company, the lead VC still typically takes the board seat; co-investors may be non-voting. Multiple co-invest SPVs can appear in hot rounds, so founders should track entity names on the cap table and signing authority.

Why it matters

• Founders: Co-invest funds can speed large rounds and reduce investor meeting load, but cap table clutter and information rights must stay manageable.
• Investors (LPs): Co-invest offers exposure without blind pool risk; diligence focuses on one company and GP alignment on pricing.
• GPs: Co-invest strengthens LP relationships and helps win competitive deals with bigger checks while respecting fund concentration limits.

Common mistake

Assuming co-invest LPs are passive forever. Some co-investors seek information rights, pro rata in future rounds, or side letters that complicate governance if not coordinated by the lead.

Related ideas

Co-investment, SPV, syndication, concentration limit, and side letter are the usual context around co-invest funds.