Scenario × Asset Analysis

What Happens to HY Credit Spread (OAS) When 30-Year Treasury Yields Surge?

What happens when 30-year Treasury yields surge above 5%? Bond market stress, fiscal concerns, and equity multiple compression.

HY Credit Spread (OAS)

295 bps

as of Apr 13, 2026

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Trigger: 30Y Treasury Yield

4.90%

Condition: rises above 5%

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How HY Credit Spread (OAS) Responds

When 30-Year Treasury Yields Surge, HY Credit Spread (OAS) typically responds to the changing macro environment. ICE BofA High Yield Option-Adjusted Spread, the market's price of default risk. This scenario is particularly relevant for credit & financial stress because changes in 30Y Treasury Yield directly influence the macro environment for HY Credit Spread (OAS). Investors should monitor both the trigger condition and HY Credit Spread (OAS)'s response to position accordingly.

Scenario Background

The 30-year Treasury yield represents long-duration borrowing costs for the US government and serves as the benchmark for 30-year mortgages, corporate bonds, and long-dated interest rate derivatives. A surge above 5% signals market concern about fiscal sustainability, long-term inflation expectations, or Fed credibility.

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Historical Context

The 30Y yield averaged 6-8% in the 1990s, reached 14% in 1981, and fell to a record low of 0.99% in March 2020. The 2022-2024 cycle saw 30Y yields rise from 1.0% to 5.1% in October 2023, the fastest rise in modern history. The last sustained period above 5% was 2007. Prior to the Great Financial Crisis, 5%+ was common; post-crisis it was exceptional until 2023. The 30Y-3M spread hitting record inversions during 2022-2024 reflected market concern about near-term Fed policy more than long-term con...