Co-Investment in PE: How LPs Get Direct Deal Access

Co-investment is one of the most sought-after features in LP-GP relationships. It allows limited partners to invest directly alongside the main PE fund in specific portfolio companies, typically at reduced or no management fees and carried interest. For LPs, co-investment represents the holy grail: PE returns with lower fees and more control. But it comes with its own set of risks and complexities.

How Co-Investment Works

When a PE fund identifies an acquisition target that exceeds the fund's desired single-asset concentration limit, the GP offers the excess to co-investors. The typical flow:

1. Deal identified: The GP sources a $500M acquisition. The fund can commit $300M (its concentration limit).
2. Co-invest offered: The GP offers the remaining $200M to select LPs as a co-investment opportunity.
3. LP diligence: LPs receive a teaser, information memorandum, and a compressed timeline (often 2-3 weeks) to evaluate and commit.
4. Parallel close: Co-investors close alongside the fund, investing on the same terms (same price per share, same security type).
5. Fee terms: Co-investment capital typically pays no management fee and no carry (or heavily reduced: 0-0.5% management fee, 0-10% carry).

The fee savings are substantial. On a $50M co-investment held for 5 years, paying zero fees versus 2/20 could save the LP $5-7M in fees and carry, adding 200-400bps to net returns.

Why GPs Offer Co-Investment

It is natural to wonder: if co-investment is such a good deal for LPs, why do GPs offer it? Several reasons:

• Larger deals: Co-investment capital allows GPs to pursue larger transactions without exceeding fund concentration limits. This expands the addressable deal universe.
• LP relationship management: Offering co-investment strengthens LP loyalty and supports future fundraising. LPs who co-invest are more likely to re-up for the next fund.
• Faster deployment: Co-investment can be committed within weeks, providing speed and certainty in competitive processes.
• Alignment: LPs who co-invest have direct exposure to portfolio company outcomes, deepening their understanding of the GP's strategy and performance.

Adverse Selection Risk

The most debated risk in co-investment is adverse selection: the concern that GPs offer their best deals to the fund (where they earn full fees and carry) and offer weaker deals as co-investments.

The empirical evidence is mixed. Some academic studies find that co-investments slightly underperform the main fund, suggesting adverse selection exists. Others find comparable or even superior performance, arguing that co-investments tend to be the GP's largest, most convicted bets.

The reality likely varies by GP. Key factors that mitigate adverse selection:

• GP reputation: Established GPs who repeatedly offer poor co-investments will lose LP trust and co-investment partners. Reputation is a powerful incentive.
• Same economics for the GP's own commitment: The GP invests its own capital (1-5% of fund) in every deal, including co-investments. The GP is aligned.
• LP selectivity: Sophisticated LPs evaluate each co-investment independently, declining deals they find unattractive.

How LPs Evaluate Co-Investment Opportunities

Given the compressed timeline, LPs must be prepared to evaluate quickly:

• Pre-existing sector expertise: LPs who have co-investment programs staffed with sector specialists can diligence deals faster.
• GP track record in the sector: Has this GP successfully invested in similar businesses before?
• Deal thesis alignment: Does the value creation plan make sense? Are the assumptions reasonable?
• Position in the capital structure: Is the co-investment in the same security as the fund, or in a different tranche?
• Exit visibility: Is there a clear path to exit within 4-6 years?

Many large LPs have built dedicated co-investment teams (5-15 professionals) whose sole job is to evaluate and execute co-investment opportunities from their GP relationships.

Portfolio Construction

Sophisticated LPs approach co-investment as a portfolio strategy, not a series of one-off decisions:

• Target allocation: Allocate 20-40% of total PE commitment to co-investments for fee savings.
• Diversification: Ensure co-investments are spread across sectors, geographies, deal sizes, and vintage years. Over-concentration in one GP's deals defeats the purpose.
• Pacing: Maintain a steady deployment pace. Co-investment opportunities are lumpy, so LPs must be ready to commit capital on short notice.
• Monitoring resources: Each co-investment requires ongoing monitoring — financial reporting, board participation (in some cases), and exit planning. LPs must staff accordingly.

The 2026 Landscape

Co-investment has become mainstream:

• Volume: Co-investment capital deployed alongside PE funds has grown to an estimated $150-200B annually globally.
• Competition: Popular co-investment opportunities are now competitive, with multiple LPs bidding for allocation. GPs can be selective about which LPs they invite.
• Structured co-invest vehicles: Some GPs have formalized co-investment into standalone sidecar vehicles with dedicated LP commitments, removing the deal-by-deal approval process.
• Democratization: Wealth platforms are beginning to offer co-investment-style access to smaller LPs and advisors, though minimum sizes often remain substantial.

Co-investment is not a free lunch, but for LPs with the expertise, staffing, and GP relationships to execute, it is one of the most effective ways to improve PE portfolio net returns.