Unlike in past cycles, the riskiest underwriting has largely occurred in leveraged loans and private credit, not high-yield bonds. This migration has left the public high-yield market with higher-quality issuers and shorter durations, making it more resilient than its reputation suggests.

There is a growing risk of downgrades in the high-grade market. The minimal yield premium for a single-A rating over a triple-B rating incentivizes higher-quality companies to increase leverage, potentially leading to a wave of downgrades as issuance ramps up.

As private credit funds absorb riskier, smaller deals, the public high-yield market is left with larger, more stable companies. This migration has improved the overall quality and lowered default rates for public high-yield bonds, creating a performance divergence.

Traditional analysis focusing on BBB-rated companies with negative outlooks misses significant risk. Data since 2010 shows roughly 50% of companies falling from investment grade to high yield did not have these obvious warning signs, making credit risk assessment more complex.

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.

Tech giants are issuing massive amounts of highly-rated debt at a discount to fund AI expansion. This makes existing, lower-rated corporate bonds from other sectors look less attractive by comparison, forcing a repricing of risk and higher borrowing costs across the credit spectrum.

Despite expectations for a wave of LBO-related issuance, the broadly syndicated loan market hasn't seen the supply needed to widen spreads. This is because private credit now competes for these deals, splitting the financing and preventing the supply-side pressure that would otherwise benefit investors.

The high-yield market's credit quality is at an all-time high, not due to broad economic strength, but because of a massive influx of 'fallen angels.' Downgrades of large, formerly investment-grade companies like Ford and Kraft Heinz have structurally improved the overall quality of the index.

A significant shift in corporate finance strategy has occurred: companies no longer universally strive for an investment-grade (IG) rating. Many firms, including 'fallen angels' downgraded from IG, are content to operate with a high-yield rating, finding the higher borrowing costs acceptable for their business models.