STLFSI4
St. Louis Fed Financial Stress Index
Official name: St. Louis Fed Financial Stress Index
Latest value
-0.2412
as of 2026-04-03
All-time percentile
47th
1-year change
-61.3%
Time series
Showing 260 of 260 data points
About this series
St. Louis Fed Financial Stress Index (version 4 — the current methodology). A composite of 18 weekly data series that measure different aspects of financial system stress: interest rates, yield spreads, and other indicators.
Why it matters: Similar purpose to NFCI but constructed differently and from a different institution — useful as a sanity check. Both are composite stress indices; when they agree, the signal is stronger.
How to read it: Zero is "normal" conditions. Positive = stressed, negative = calm. Not as widely cited as NFCI but captures similar dynamics. Compare the two: divergence can sometimes highlight which type of stress is building.
Caveats: The methodology has been revised multiple times (hence STLFSI4); historical readings across versions aren't fully comparable.