Private Debt
The first book-length case for corporate direct lending as an asset class.
Summary
Stephen Nesbitt runs Cliffwater, an institutional consulting firm, and wrote this as an argument for direct lending to middle-market companies as a distinct institutional asset class. His audience is pension funds and endowments considering an allocation.
His case rests on the structural shift after 2008. Banks retreated from middle-market lending under new capital rules, and the syndicated loan market serves larger borrowers, which left companies with earnings in the tens of millions dependent on non-bank lenders. Nesbitt argues that these loans offer a yield premium over syndicated loans, that the premium reflects illiquidity and complexity rather than credit risk, that the loans are senior and secured with maintenance covenants that broadly syndicated loans have largely abandoned, and that the floating rate structure removes duration exposure.
He supports this with return and loss data, primarily from business development companies, which are the publicly reported vehicles in the space, and constructs index series from them. The book is written by someone whose firm sells advice on this asset class, and readers should weigh that. The analysis also predates the enormous growth of private credit through 2020 to 2025, which has compressed spreads, moved the asset class up-market into competition with syndicated loans, and raised questions about valuation practices and about what happens in a genuine default cycle. The framework for evaluating the asset class is sound; the numbers are historical.
Key takeaways 7
- Bank retreat from middle-market lending after 2008 created the borrower demand that direct lending funds serve.
- The yield premium on direct loans over syndicated loans compensates for illiquidity and origination work rather than for additional credit risk.
- Direct loans typically carry maintenance covenants that broadly syndicated loans have abandoned, which gives lenders an early right to renegotiate.
- Floating rate structures remove interest rate duration, so the exposure is credit rather than rates.
- Business development company data provides the only long public return series for the asset class, and it carries its own biases.
- Manager selection matters more in private credit than in liquid credit because origination access and underwriting differ substantially between firms.
- Nesbitt argues that valuation in private credit is model-based, so reported volatility understates the economic variability of the assets.
Who should read it
Institutional allocators evaluating a private credit allocation who want the structural case, read with awareness of how much the market has changed since 2018.
Where it sits in the reference 2
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