Contrary to the belief that hot credit markets encourage high leverage, data shows high-yield borrowers currently have leverage levels around four times, the lowest in two decades. This statistical reality contrasts sharply with gloomy market sentiment driven by anecdotal defaults, suggesting underlying strength in the asset class.

In 1935, amidst massive economic uncertainty following the Great Depression, a new AA-rated corporate bond yielded just 70 basis points over Treasurys. This historical precedent, nearly identical to today's spreads, shows that low credit spreads are not necessarily a sign of complacency and can persist even if economic conditions worsen, challenging typical risk-pricing assumptions.

Despite a challenging macro environment, credit spreads remain tight not due to fundamentals but to massive, spread-agnostic demand from yield-based buyers like pensions and insurance companies, who represent over $6.4 trillion in holdings and are increasing allocations.

Despite record federal borrowing, U.S. households and corporations have actually deleveraged. Household debt-to-GDP is lower than in 2000, and corporate debt is stable. This private sector strength explains why the economy has remained resilient to high interest rates, creating a divergence between public and private financial health.

Michael Mauboussin's research reveals a surprising trend. Despite a long period of low interest rates, non-financial corporate debt to total capital is around 15% today, significantly lower than the historical average of 26%. This suggests balance sheets are stronger than commonly perceived.

With corporate credit spreads at historically narrow levels, investors are not being compensated for the inherent risk. In Richard Bernstein's career, spreads have only been this tight three previous times, each preceding a major credit crisis or market scare (late 1990s, mid-2000s, 2021-22). This suggests a poor entry point for credit.

With spreads as a percentage of yield at a 25-year low of 15%, investors' returns are dominated by movements in government bond rates, not the premium for taking corporate default risk. This is a hidden vulnerability masked by high all-in yields.

Today's high-yield market has a fundamentally different, higher-quality composition than before the GFC. The proportion of risky CCC-rated issuers has fallen from nearly 25% to below 10%, which mathematically justifies the current tight spread levels.

When a steepening yield curve is caused by sticky long-term yields, overall borrowing costs remain high. This discourages companies from issuing new debt, and the reduced supply provides a powerful technical support that helps keep credit spreads tight, even amid macro uncertainty.