The secondaries market crossed a threshold in the first half of 2026. Transaction volume reached record levels above $118 billion, with GP-led deals claiming the majority share for the first time. Behind these figures lies a quieter structural development: family offices are building direct investment portfolios at unprecedented scale without proportionally expanding their investment teams. They are solving the resource constraint not through hiring, but through systematic co-investment access. This represents a fundamental rethinking of what portfolio infrastructure means.
The 83% Solution
Seventy percent of family offices now make direct private investments. Yet eighty-three percent of that direct deal volume flows through co-investments and club deals rather than solo commitments. This is not a transitional approach. For most families, co-investment has become the permanent architecture for private markets exposure.
The pattern differs by institutional maturity. Newer family offices show a marked preference for secondaries—instant portfolio construction without deal sourcing infrastructure. Established offices gravitate toward co-investments, valuing the combination of control and access to lead investor diligence. Both approaches share a common recognition: the constraint is not capital but capability.
Direct allocations now represent forty-five percent of private markets portfolios among family offices making direct investments, up from thirty-three percent twelve months earlier. Portfolio composition shifted this dramatically without corresponding expansion in deal teams. The infrastructure question has moved from "do we have the team?" to "do we have the relationships?"
Where the Model Breaks: The Continuation Fund Dilemma
GP-led continuation vehicles now account for over half of secondaries market activity. These structures create a specific challenge for family offices built on co-investment access. The model works elegantly for new transactions where a lead investor has conducted comprehensive diligence. It fractures when a general partner asks limited partners to re-underwrite existing holdings.
Continuation funds force a binary decision: cash out or roll forward into a restructured vehicle. Family offices lacking asset-level diligence capability find themselves structurally disadvantaged. They must evaluate a hold-versus-sell decision on an asset they already own, but for which they borrowed rather than built the original investment thesis.
This is the governance gap made visible. Families constructed access without developing parallel internal capability. The co-investment model provided entry into institutional-quality deal flow; it did not build the institutional muscle to independently evaluate complex exit decisions.
Access Architecture as Infrastructure
The traditional view framed co-investment as gaining deal access from general partners. The 2026 reality is more structural. Co-investment means building systematic exposure to institutional diligence infrastructure. The selection criterion shifts from evaluating the specific deal to evaluating the lead investor's process.
Families are effectively paying for governance depth they choose not to build internally. Club deals—three to eight family offices pooling capital alongside a lead sponsor—extend this logic. Shared diligence becomes shared governance. The institutional capability resides not within any single family office but in the sponsor relationship itself.
This only functions at scale if co-investment access is both reliable and repeatable. The families succeeding have formalized pipelines with five to ten preferred sponsors. They treat these relationships as core portfolio infrastructure. The families struggling continue to approach co-investment opportunistically, deal by deal, without recognizing that the relationship itself is the infrastructure.
The Governance Trade-Off
Recent research indicates that governance challenges now rank ahead of investment returns as the primary concern among family offices. Less than one-third have highly formalized governance processes. Fewer than one in four have clearly defined decision-making frameworks or written investment constitutions.
Co-investment solves the capability gap by importing institutional process. It simultaneously imports someone else's governance framework. Families must answer a question that extends beyond any individual transaction: whose investment process do we trust to serve as our de facto investment committee?
This is not outsourcing in the conventional sense. Outsourcing implies delegation of defined tasks. Co-investment architecture means embedding decision-making authority within sponsor relationships. The governance question becomes: how do we maintain principal oversight when the analytical infrastructure resides externally?
Infrastructure as Relationship Capital
The evidence suggests family offices are not evolving into scaled-down versions of institutional investors despite moving seventy percent of participants into direct investing. They are instead building a different model: curating sponsor relationships as the foundation of portfolio infrastructure.
This requires different skills. The core competency is not deal diligence but relationship diligence. Evaluating a general partner's investment process, governance standards, and alignment becomes more critical than evaluating individual portfolio companies. The question shifts from "is this a good investment?" to "is this a good investor?"
The surge in secondaries market activity signals that families will increasingly trade liquidity for access—but only when access comes bundled with institutional-grade process. For general partners, this creates retention architecture in an environment where distributions remain constrained. Co-investment relationships become a mechanism for deepening limited partner commitment beyond the fund vehicle itself.
Redefining Infrastructure
Family offices have solved direct investing not by becoming institutional investors, but by systematically embedding with institutional investors. The test is not whether a family office can source proprietary deal flow. The test is whether it has built reliable access to those who can.
This is infrastructure as relationship architecture. Less about hiring, more about access. Less about building internal capability, more about curating external partnerships. The shift is structural, not tactical. The families that recognize co-investment access as permanent infrastructure—rather than temporary supplement—are constructing portfolios that reflect institutional diversification without requiring institutional headcount.
The question facing family offices is no longer whether to invest directly. It is how to build the relationship capital that makes direct investing sustainable at scale.
This article was generated with AI and reflects general perspective, not investment advice.