The famous inverted yield curve recession predictor is based almost entirely on a single four-year window from the late 1970s.
April 25, 2026
Original Paper
The Volcker Signal
SSRN · 6639799
The Takeaway
Investors treat the yield curve inversion as a golden rule of financial forecasting. Analysis shows that its reputation as a reliable predictor of credit trouble has not held up since 1997. The predictive power that everyone relies on was largely a historical fluke from the Volcker era. Relying on this one signal to guess when a recession will hit is a dangerous gamble. The economy has changed in ways that make this old indicator much less useful today. Finance experts have been following a pattern that may no longer exist.
From the abstract
Using a monthly panel covering June 1976 through April 2026, we document that essentially all of the yield curve inversion's historical predictive content for BAA-AAA credit-spread widening is attributable to the 1978-1982 Volcker disinflation. Of 94 inversion-months in the full sample, 39 fall within this five-year episode; 30 of those 39 were followed by ≥10bp BAA-AAA widening within six months. Of the remaining 55 inversion-months-seven before Volcker or between Volcker and September 1997, an