Co-Investment
Co-investment is a direct investment by a limited partner alongside a private equity, venture capital, or hedge fund general partner in a specific portfolio company or asset — at reduced or zero fee and carry levels — providing LPs with increased exposure to selected opportunities beyond their fund allocation.
Key takeaways
- Co-investments are typically offered to LPs on a no-fee, no-carry basis (or at significantly reduced terms), representing a significant economic benefit versus the standard 2-and-20 fund structure.
- LPs typically receive co-investment rights as a negotiated element of their fund commitment, with larger commitments earning more access to co-investment opportunities.
- Adverse selection is the primary concern: GPs may offer co-investment on larger deals requiring more equity than the fund can accommodate, or may offer weaker opportunities preferentially, retaining the best deals for the fund.
- Co-investment programs require LPs to have sufficient internal investment staff to evaluate and execute transactions quickly (often within 1-2 weeks), as GPs require swift LP decision-making.
- Secondary co-investment markets have developed, allowing LPs to sell unwanted co-investment stakes, providing liquidity for an otherwise illiquid asset.
Explanation
Co-investment has grown from a niche LP privilege into a mainstream component of institutional private markets allocation, driven by LPs seeking to reduce fees, increase deal-level transparency, and build direct investment capabilities. The economic rationale is compelling: a pension fund investing $500M in a fund paying 2%/20% faces $10M in annual management fees and 20% of profits as carry. If the same pension fund can invest $200M directly in specific deals at zero fee/zero carry, the fee savings over a fund's life can amount to $15-30M or more in present value terms.
The GP's motivation for offering co-investment is equally compelling. Large deals — particularly in mega-buyouts, infrastructure, and real assets — require equity checks exceeding the GP's fund allocation limits (typically 10-15% of fund size per investment). Rather than form a club with competing PE firms (which introduces governance complexity and antitrust risk), the GP offers the excess equity to its existing LP base as co-investment. This maintains deal control with the GP while accessing capital from known, trusted counterparties.
Co-investment legal documentation uses a separate co-investment vehicle or side letter structure. Rather than receiving interests in the main fund, co-investors receive direct interests in a co-investment SPV (special purpose vehicle) that holds only the specific portfolio company investment. The SPV is typically structured as a Delaware LLC or Cayman exempted company, with the co-investors as members and the GP (or a GP affiliate) as the managing member. Economic terms are negotiated upfront: the co-investment may be at zero management fee and zero carry, or at 0-to-1% management fee and 0-to-10% carry, depending on the GP's negotiating leverage and deal characteristics.
Adverse selection concerns have received significant academic attention. Fang, Ivashina, and Lerner (2015) found in their Harvard Business School study that co-investments underperformed primary fund investments by approximately 3-4% on an IRR basis, consistent with adverse selection (GPs offering riskier or less attractive deals as co-investments). However, more recent practitioner analysis suggests that larger, more sophisticated LPs with robust due diligence processes have achieved co-investment performance broadly in line with fund performance, suggesting the adverse selection problem is manageable with adequate resources.
For LPs building a direct investment capability alongside co-investments, the transition is gradual: initial co-investment experience builds deal-flow access, sector expertise, and management relationship networks that eventually support fully independent direct investments (bypassing GP intermediation entirely). The largest sovereign wealth funds (GIC, GIC Singapore, CDPQ, CPPIB) have followed this evolution path, with direct investments now representing 30-50% of their private markets allocations.
Formula
Co-investment Net Return ≈ Gross Return (no fee/carry drag); Fund Net Return ≈ Gross Return − Management Fee − Carry
Example
A state pension fund has committed $300M to a leading infrastructure GP's $6 billion fund. As a major LP, the pension fund has a negotiated right to co-invest up to 50% of its fund commitment ($150M) in each deal offered. The GP identifies a $4 billion acquisition of a toll road concession requiring $1.6 billion in equity. The fund can commit $600M (10% of fund). The GP offers co-investment to three large LPs: the pension fund invests $150M at zero management fee and zero carry; two other LPs invest $100M each on similar terms. The remaining $650M is funded by the GP's fund. Over 10 years, the toll road generates 16% IRR. The pension fund's co-investment yields full 16% IRR with no fee or carry drag, versus approximately 11% net IRR from its fund allocation after standard fees.
Related terms
Basis Carbon Credit Equity General Partner Hedge Fund Infrastructure Investment Leverage Limited Partner Management Buyout Management Fee Present Value Private Equity