How Does LP Co-Investment Work — and What Should LPs and Founders Watch For?

Looking for how LP co-investment works — and whether the “no fee / no carry” pitch is the whole story?

Co-investment lets an LP put money into a specific deal next to the GP’s main blind-pool fund, usually through an SPV, often with reduced fees on that slice.

Glossary: Co-investment

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How the structure usually works

GP’s fund takes its core allocation.
Extra capacity is offered to selected LPs (side letter / relationship).
Those LPs fund a co-invest SPV on (hopefully) the same economic price.
Fee/carry on the co-invest slice may be 0/0 or reduced.
Governance stays with the lead GP — co-investors are rarely a second board.

LP view: upside and traps

Upside	Trap
Fee/carry savings	Adverse selection (“extra” deals only)
Higher conviction sizing	Concentration risk
Relationship with GP	Unequal access / MFN complexity
Faster thematic exposure	Information & timing pressure

Allocator diligence still starts with the main fund process: team, pacing, LPAC, and fees.

Founder view

Co-invest is usually invisible until late:

Good: more capital without a messy second lead
Bad: ten small LPs slowing counsel
Ask: Who is the decision-maker, and what is the wire date?

Co-invest vs fund of funds vs direct

Path	What you underwrite
Blind-pool fund	GP process
Co-invest	GP + this company
Fund of funds	FoF manager selecting GPs
Direct / deal-by-deal only	Company + lead (no fund diversification)

Practical takeaway

LPs: Co-invest is a tool, not automatic alpha.
GPs: Allocation policy and conflicts belong in writing.
Founders: Protect a single lead and a clean close.
Directory: When evaluating multi-stage firms that often invite co-invest, start from live profiles in the directory — e.g. Insight Partners, Thrive Capital — without inventing a “top co-invest” ranking.

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