Factor returns for US leveraged loans, built from public SEC data

An open database of monthly factor returns for the US leveraged loan market. Every number is derived from fund holdings reported to the SEC in Form N-PORT, so anyone can reproduce it.

Cumulative total return of the equal-weighted N-PORT loan benchmark and the Morningstar LSTA US Leveraged Loan Index, October 2019 to April 2026. The two lines are almost identical.
Figure 1. Cumulative total return of the equal-weighted N-PORT benchmark and the Morningstar LSTA US Leveraged Loan Index. Monthly return correlation 0.995, tracking error 0.6% p.a. (October 2019 to April 2026).
Factors
9 plus market
Sample
Oct 2019 – Apr 2026
Loans in the universe
about 1,200 per month
Updates
quarterly

Why this database

Leveraged loans are private, over-the-counter instruments. Loan-level prices are normally available only from commercial vendors whose licenses do not allow public redistribution. Research on factor investing in loans has therefore been hard to replicate and impossible to share.

US registered investment funds, however, report every loan they hold to the SEC, with notional and fair value. Aggregated across funds, these filings track the loan market closely, as Figure 1 shows. This site turns them into factor returns that are free to use, cite and extend.

What you get

See the factor definitions or go to the data.