Private credit markets continue to scale, and demand to understand what is happening beneath the surface is growing as market participants seek to build more diversified and resilient portfolios, manage liquidity and identify new return streams.
When it comes to measurement, particularly in direct lending—the leading strategy in private credit—there is an increasing focus on the quality, frequency and granularity of the data used to evaluate fund performance and its underlying drivers. Yet measuring, comparing and monitoring performance and risk can remain challenging in a market where data is limited, valuations are infrequent and transparency can vary widely.
The S&P Lincoln Senior Debt Indices help address these challenges by bringing asset-level insights, independent valuations and index discipline to the U.S. and European middle-market direct lending universe. Underpinned by Lincoln International’s extensive valuation data universe, which includes more than 7,000 portfolio valuations per quarter and over USD 220 billion in quarterly securities valued, the indices provide data-driven benchmarks for assessing senior debt performance across the private credit landscape.
Now with monthly calculated benchmarks and dedicated subindices by loan type, sector and borrower EBITDA, this index series provides an even more timely and granular view into one of the fastest-growing areas of private markets.

Learn more about our private credit indices to find out how we’re helping investors assess performance and risk with greater transparency.