Investment Grade Credit Spread
ICE BofA US Corporate (IG) Option-Adjusted Spread — Historical Chart
1 bps
▼ 3.70% YoYAug 2026
All-Time High
1 bps
All-Time Low
1 bps
Data Since
2023
Source: FRED / ICE BofAShaded = NBER recessions
Option-adjusted spread between investment-grade US corporate bonds and equivalent-maturity Treasuries. This is the "price of credit" for America's highest-quality borrowers. IG spreads are a leading indicator of economic stress: they tighten when companies are healthy and widen sharply before recessions. The 2020 COVID spike to 373bps reversed in weeks after the Fed's intervention with corporate bond buying programs — the first in Fed history.