Why mid-market companies need a new private capital playbook

Institutional investors managing large private equity allocations are fundamentally reconsidering portfolio construction strategies that dominated the past two decades, according to leading allocators and consultancies. The traditional playbook centered on large-scale buyouts, significant co-investments, and leverage-dependent value creation is showing stress under current market conditions. Adams Street Partners' Managing Partner Jeff Diehl articulates the core challenge: portfolios engineered for lower-rate environments with multiple expansion opportunities are underperforming as higher-for-longer interest rates fundamentally alter return drivers.

The shift reflects structural changes in value creation mechanics. Rather than relying on debt leverage and exit multiple expansion, managers must now demonstrate capacity to drive organic EBITDA growth and implement sustainable operational improvements. Mid-market and lower-middle-market strategies are gaining relative appeal because smaller companies typically exhibit faster revenue growth potential, lower leverage requirements, and greater operational upside. Eighty-one percent of middle-market companies now consider private capital when evaluating growth or strategic initiatives, indicating strong demand for capital partners with genuine operational expertise rather than financial optimization alone.

Private credit dynamics further underscore the playbook shift. While the private credit market faces mounting defaults and deteriorating loan terms, the lower middle market maintains structural advantages through relationship-based lending arrangements, suggesting that capital access and terms remain favorable for providers with established deal flow and borrower relationships. This bifurcation rewards managers with diversified, high-volume deal pipelines that reduce concentration risk while enabling opportunistic deal selection.

Artificial intelligence represents both opportunity and disruption across private markets, though with uneven impact. Early-stage venture and software-focused strategies benefit most from early AI adoption insight and access, while companies in other sectors may not capture material value from AI implementation—making granular diligence and differentiated sector expertise increasingly valuable. Allocators reassessing underperformance need not abandon entire private equity programs but should recalibrate exposure toward mid-market partnerships demonstrating proven operational execution capabilities, differentiated manager access, and realistic (rather than aspirational) AI readiness.