The business of private credit: Quality matters in core middle market credit

The financial professional take on “The Lead” newsletter series is dedicated to help financial professionals stay informed about developments, and movements in private capital investing.

Bottom-line upfront

1. Sponsor quality is the primary filter for core middle market private credit outcomes, since the same sector conviction that drives an equity sponsor's ownership decision also shapes the credit underwriting a lender inherits.
2. Sector specialization, rather than multiple expansion or cheap leverage, is the value creation lever that has distinguished core middle market private equity performance in the current environment.
3. Portfolio conversations about private credit and private equity in the core middle market benefit from framing the two as complementary rather than competing allocations, given the shared sector conviction and the illiquidity considerations that apply to both.

When evaluating core middle market private credit allocations with clients, the quality of the private equity sponsor behind a borrower is often the strongest early signal of underwriting durability.

Why sponsor quality shapes core middle market credit outcomes

For this series, we've focused on how core middle market lenders underwrite a borrower. But before the lender ever sees the deal, a sponsor has already spent months, sometimes years, evaluating whether this was a company worth owning.

The most capable sponsors aren't just capital allocators; they are operational architects who know how to turn good businesses into stronger ones. Direct lenders who have partnered with these sponsors across cycles know the value of that filter.

How private equity sponsors evaluate a business

What are middle market private equity investors looking for? Growth, first and foremost. Capital providers underwrite to downside, and private equity firms invest for upside. Where a credit team asks, "what protects the loan if revenue drops 20%?", a sponsor asks, "what does this business look like at 3x its current size?" Those two questions are more complementary than they sound. The equity upside case and the credit downside case are built on the same foundation.

Underwriting for growth shows up in the numbers. Recent research found that private equity-backed companies grew revenue 12.9% year-over-year in 2025, versus 10.4% for their non-sponsored peers. Many of these companies were also twice as likely to have acquired or opened a new facility during that period. ¹

Why sector specialization has become the value creation lever

For many capable private equity partners, sector expertise is the strategy. Multiple expansion and cheap leverage are no longer reliable levers. With managers typically putting up 40% to 60% of the purchase price in cash, returns depend on making the business meaningfully better, not just riding a multiple. That value creation takes years of industry-specific operating experience, relationships, and pattern recognition that generalists don't have. That's why many middle market sponsors today function as sector specialists.

This fundamental approach has defined established private equity investing. Specialists develop long-term conviction on where to deploy capital, rather than trading in and out of the hottest themes. Contrast that with the large cap private equity market, which recently scrambled in and out of software (information technology, or IT) and into energy. Real activity, but momentum-driven behavior that surfaces when crowded themes get challenged.

How the sponsor and lender relationship works in practice

It's tempting to think private credit and private equity compete for attention in an investor's portfolio. In the core middle market, they go hand in hand. The sponsor decides which businesses are worth owning, built on years investing in a sector. The lender decides which of those are worth financing, inheriting that same sector conviction in the process. Each seat relies on the other, and both are underwriting from real conviction. This is a partnership that works together on behalf of investors.