Picture this: Short-sightedness in a mainstream credit market

Investors in investment-grade bonds have focused purely on yields in recent years, looking past historically tight credit spreads. With yields now falling, the market’s allure could fade, and investors might be in for a bumpy ride

The Context: Over recent years, the allure of attractive all-in yields (income) has seen investors flock to the investment-grade corporate credit market. At the same time, credit spreads have narrowed sharply. This matters because credit spreads provide additional income that has helped smooth the volatility generated by moves in government bond yields in recent years.

Today, however, credit spreads are unusually tight and are at levels not seen since the late 1990s. Historically, when credit spreads were at similar levels, all-in yields were on average more than 170bps higher than they are now. With yields having fallen back to levels last seen three years ago and the economic outlook still uncertain, demand for the asset class could wane, and investors may face greater volatility than they expect.

Attractive overall yields have masked a declining credit spread in the investment-grade credit market

Source: ICE BofA, US Corporate Index. As at 31 August 2025. The spread measure used is the option-adjusted spread over government bonds. Yields used are yield to worst.

The Conclusion: Credit investors who focus solely on the yields on offer in mainstream markets risk overlooking an important nuance. With the credit spread eroded, this traditionally “safe” asset class may underdeliver, especially if all-in yields prove to be too low to sustain continued strong demand. Investors looking for income should cast a wider net and invest selectively across both traditional and specialist areas of credit in today’s uncertain environment.