The Strategic Case for Lower Middle Market Asset-Backed Finance

By: Jay Braden, Mesirow

Learn why lower middle market asset backed finance may be a compelling addition to pension fund portfolios, offering attractive yields, granular collateral, and embedded downside protection. Jay Braden of Mesirow Alternative Credit shows how this under-served niche can complement sponsor backed direct lending and strengthen long-term risk-return profiles.

Institutional investors have meaningfully increased allocations to private credit, often through sponsor backed direct lending. Many are now seeking complementary strategies that offer differentiated sources of return, diversification, and stronger structural protection.

Lower middle market asset-backed finance (ABF) — in particular, lending against granular pools of consumer and small-business assets originated by specialty finance platforms — is, in our view, one of the most compelling opportunities within this broader ecosystem. This paper outlines why lower middle market ABF is well positioned to deliver attractive, income-oriented returns with meaningful downside protection for long-term institutional capital.

Defining the Lower Middle Market in ABF

In this context, the “lower middle market” refers primarily to specialty finance platforms focused on consumer and small-business assets such as consumer loans, point-of-sale financing, healthcare receivables, small-business working capital, factoring, and revenue-based finance. These businesses are often too small or operationally complex for banks and large private credit managers to serve efficiently.

Facilities in this segment are generally sized between $15 million and $75 million, a range in which competition from large banks and megafunds is limited and structuring flexibility is greatest. Collateral pools consist of short-duration, self-amortizing assets that often have millions of underlying contracts. These collateral pools are diversified across originators, geographies, business models and product types. Advance rates are intentionally conservative, typically resulting in portfolio loan-to-value ratios in the low 80% range.

Structural Inefficiency and Return Potential

Post-GFC regulatory changes and capital constraints have led banks to retrench from nonstandard, capital intensive lending, particularly to smaller specialty finance platforms and consumer facing lenders. As a result, a significant portion of the U.S. specialty finance market across consumer, commercial, and contractual cashflow segments remains underpenetrated by both banks and traditional private credit.

This allows for a “complexity premium” to be earned in the lower middle market. Transactions are operationally intensive and often too small to interest scaled platforms, yet large enough to matter for focused strategies. Underwriting requires specialized systems, data analysis, and domain expertise to analyze collateral performance through economic cycles and to assess the operational capabilities of originators. Structural features such as collateral eligibility criteria, conservative advance rates, and dynamic borrowing bases with triggers and covenants are central to risk management.

Investors willing to back managers with the infrastructure and experience to operate in this niche can, in our view, access persistently higher yields than are typically available in more commoditized corporate direct lending, without a proportionate increase in fundamental credit risk.

Diversification and Portfolio Role

Lower middle market ABF offers noncorporate, highly granular, diversified exposure. Unlike sponsor-backed direct lending, where risk is concentrated in individual corporate borrowers, each ABF facility is supported by large pools of consumer and small-business receivables with small average balances, materially reducing single-name risk.

Performance is driven by collateral cash flows rather than EBITDA, leverage, and exit valuations. Historically, this has resulted in low correlation to public markets and to traditional corporate credit. For institutions whose private credit allocations are anchored in middle market direct lending, adding a dedicated lower middle market ABF allocation can:

• Diversify away from sponsor and corporate risk
• Introduce structurally protected, asset backed exposures that are bankruptcy remote
• Enhance cash distributions
• Provide short duration, self-amortizing collateral that steadily returns principal

A well-constructed lower middle market ABF fund will typically hold 20–30 positions diversified by borrower, asset type, origination channel, and geography, with tight limits on exposure to any single platform or pool. Within each position, further diversification comes from the granularity and amortizing nature of the underlying contracts.

Downside Protection and Risk Management

Downside protection is central to the ABF thesis. Key structural elements typically include:

• Bankruptcy-remote special purpose vehicles (SPVs) that hold collateral and isolate cash flows from platform operating risk
• Conservative advance rates and meaningful excess spread, creating substantial cushions before lender principal is at risk

Robust documentation reinforces these protections through concentration limits by asset type, credit band, geography, and other risk dimensions; performance triggers that allow for lower advance rates or trap cash when breached; and lender control over collection accounts and cash waterfalls.

Specialty finance platforms generate rich performance data, enabling loan or pool-level reporting at high frequency and near real-time monitoring of delinquencies, prepayments, recoveries, and vintage curves. Structures, advance rates, or eligibility criteria can be adjusted if performance deteriorates. A culture of risk management integrated across sourcing, underwriting, and portfolio management, reinforced by continuous data feedback, should be a defining characteristic of managers in this space.

About the author: Jay Braden is the CEO and Co-Chief Investment Officer in Mesirow Alternative Credit. In this capacity, he is responsible for leading the business and participates in all aspects of the investment process. Jay is a voting member of the business’ Investment Committee.

Before joining Mesirow, Jay was the founder, Chief Executive Officer, and Chief Investment Officer of Bastion Management. Prior to founding Bastion in 2013, Jay was President of Castillo, LLC, a US investment firm, and before that, he served as Managing Director and Co-Head of High Yield at Wachovia Securities where he led a team of 60+ professionals. Earlier in his career, Jay also held senior roles at Smith Barney and Bear Stearns.

Jay holds a B.A. from Roanoke College and an MBA from The Wharton School.