Junk bonds are heading for worst month since 2022 after punishing global selloff

September has proven difficult for U.S. high-yield corporate debt, with junk bonds on pace for their worst monthly performance since 2022. The selloff reflects a broader wave of global market volatility that has pressured risk assets generally, and the elevated yields that normally compensate investors for holding lower-rated credit have not been sufficient to offset price declines this month.

The development matters because high-yield bonds sit at the intersection of corporate credit and broader risk sentiment. When junk bonds weaken sharply, it can signal that investors are demanding more compensation to hold credit risk, often alongside rising caution about economic growth or tighter financial conditions. For companies that rely on high-yield issuance to refinance debt, a sustained rise in borrowing costs could weigh on balance sheets.

What to watch from here: whether the pullback proves temporary or marks a lasting shift in credit risk appetite, how spreads between junk and Treasury yields evolve, and whether volatility spills into other markets. The month's final trading sessions will determine where September lands historically.