The Combined Credit Spread Model Falls to Unfavorable

Jay Kaeppel
2026-03-20

Key points:

  • Credit spreads serve as a "fear gauge" in the credit markets - narrow/falling spreads suggest calm, rising spreads suggest concerns
  • Our Combined Credit Spreads Model recently fell into unfavorable status - suggesting limited upside and increased volatility for stocks while this status remains
  • The Combined Credit Spreads Model is comprised of two credit spread-related indicators - ICE BofA US High Yield Option-Adjusted Spread and the CDX Index
  • Part I reviews the indicators that comprise the Combined Credit Spreads Model

Indicator #1: ICE BofA US High Yield Index Option-Adjusted Spread

The ICE BofA US High Yield Index Option-Adjusted Spread (HYCS) measures the spread between the computed index of below-investment-grade bonds and the spot Treasury curve.  

We rate the spread as favorable when it is in a downtrend and unfavorable when it is in an uptrend. We designate its trend as follows:

A = HYCS weekly close

B = 13-week exponential average of A

C = 28-week exponential average of B

The chart below displays these variables.

The Combined Credit Spread Model Falls to Unfavorable

From here, we take the difference between the two mov

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