Private credit has become one of the fastest-growing asset classes within global capital markets. In the first half of 2026 alone, private credit fundraising reached USD 190 billion, which is on pace to surpass the 2025 full-year total of USD 240 billion (see Exhibit 1).1 Direct lending has driven much of private credit’s growth, having multiplied roughly sixfold between 2016 and 2024.2 It is now the largest segment within private credit and an increasingly important source of financing for middle-market companies in the U.S. and Europe.

However, the rapid growth of private credit has prompted increased scrutiny, reflecting concerns about the asset class’s inherent opacity, volatility and valuation uncertainty. These concerns have been reinforced by recent headlines focusing on valuation practices, liquidity risk, redemption pressures and credit quality. As private credit continues to grow in scale and significance, market participants looking to understand and measure these changing dynamics need transparent and trusted benchmarks, but are often limited by lagged, manager-reported fund-level data. So, how can benchmarks keep pace and offer market participants the insights needed to effectively monitor this fast-evolving space?
Going Beyond Headline Performance
Private credit benchmarks have existed for years, but many are built on fund-level performance rather than on the underlying loans. This has created an incomplete picture of risk and volatility. Unlike public credit benchmarks that are supported by more timely and readily available data sources, reporting practices, data availability and calculation standards vary across private credit managers. The result is often a fragmented view of the market that makes constituents harder to compare and private credit more difficult to assess alongside public markets.
Closing this benchmarking gap requires richer fund- and asset-level data, along with a common framework for translating that information into standardized market measures comparable to those used in public markets. Frequent valuations and deeper data are also key for ensuring market participants have access to timelier information, which is particularly important during periods of market uncertainty when visibility becomes even more critical.
Loan-level data provides transparency into credit quality, yield, maturity profiles and portfolio concentrations across industries, seniority bands and borrower EBITDA segments. This information enables investors to better understand the underlying drivers of performance and identify evolving risks that top-line performance measures cannot.
Credible loan-level data, however, is only one part of the solution. The next generation of private credit benchmarks should combine asset-level information with consistent methodologies, trusted calculations and robust index governance. That combination creates a common reference point for evaluating performance and risk across managers, constituents and markets over time.
Building the Foundation for Better Measurement
Developing an enhanced benchmarking infrastructure increasingly requires collaboration across the private credit ecosystem. Many leading industry specialists have access to data that has historically been difficult to aggregate, while index providers contribute the methodology and governance needed to make it comparable. Together, these capabilities can help transform fragmented observations into reliable market benchmarks.
The S&P Lincoln Senior Debt Index Series, developed by S&P Dow Jones Indices (S&P DJI) in collaboration with Lincoln International, a global investment banking advisory firm, combines Lincoln’s private loan valuation data with S&P DJI’s transparent rules-based index methodology and governance framework. It measures illiquid senior debt facilities issued primarily to private-equity-sponsored companies in the U.S. and Europe, using granular loan-level insights to provide a systematic view of direct lending. This index series offers subscribers a rich set of credit metrics—including returns, fair value movements, yields, coupon spreads, leverage and borrower characteristics by firm size, sector and time period—that enable users to analyze how yields and spreads change over time, how risk differs between borrowers and how credit conditions vary across sectors (see Exhibit 2).

Better measurement will not erase the structural differences between private credit and public markets. It can, however, provide a clearer lens into performance, risk and market dynamics. As private credit continues to evolve, benchmarking infrastructure needs to evolve alongside it, helping the market move toward a new generation of benchmarks that offer greater transparency, comparability and possibility.
Learn more about the S&P Lincoln Senior Debt Index Series to see how we’re helping market participants assess performance and risk with greater transparency.
1 “Private Credit Fundraising H1: Market on Course for Record Year,” With Intelligence by S&P Global, Aug. 12, 2026.
2 Source: S&P Global, CapIQ. Data from Dec. 31, 2016, to Dec. 31, 2024, as presented in Exhibit 1 of S&P DJI’s “Measuring Direct Lending: Building Transparency in Private Credit Markets,” April 1, 2026.
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