Key Takeaways:
A new study of fixed-income funds since 1970 reveals that timing is critical for investing in high-yield debt, with returns swinging dramatically based on economic cycles and Federal Reserve policy. Junk bonds delivered an 11.52% annualized return when interest rates were falling but posted just 2.51% when rates were on the rise.
The research, conducted by Professor Derek Horstmeyer and his team at George Mason University, analyzed decades of data on mutual funds and ETFs. "High-yield debt can deliver outsize returns when the economy is expanding and rates are falling, but beware when rates are rising or the economy is in recession," Horstmeyer said, summarizing the findings.
During economic expansions, high-yield funds generated average annual returns of 8.78%, significantly outpacing the 6.40% from generic fixed-income funds. The roles reversed during recessions, when junk bond funds lost an average of 2.58% per year as default risks materialized, while safer investment-grade funds returned 4.07%. The volatility of high-yield debt also more than doubled during recessions, jumping from 6.29% to 15.97%.
This historical data provides a clear framework for asset managers timing their exposure to non-investment-grade credit. The findings suggest that the most profitable environment for holding junk bonds is a growing economy where the central bank is cutting rates, a scenario that boosts bond prices and keeps default rates low.
The study's conclusions are reflected in the recent performance of short-duration high-yield ETFs. For example, the PIMCO 0-5 Year High Yield Corporate Bond Index ETF (HYS) delivered a 10% total return over the past year as the Fed cut rates three times in late 2025. That environment of falling rates, combined with a healthy yield curve and low market volatility, has supported both the income and price appreciation of such funds.
While high-yield debt has historically outperformed other fixed-income products over the very long run with a 7.41% average annualized return since 1970, that comes with higher volatility of 8.15% compared to 5.19% for generic bond funds. The research underscores that these assets are not a monolith; their risk-reward profile shifts dramatically with the macroeconomic landscape, rewarding investors who correctly anticipate economic expansions and periods of monetary easing.
This article is for informational purposes only and does not constitute investment advice.
