The S&P 500 declined 0.2% and the Dow fell 0.3% on September 30 after investors shifted capital toward bonds. The 30 year Treasury yield reached 5.62%, the first time it has hit that level since 2002, while the 10 year yield rose to about 5.29%. Market participants are awaiting inflation and jobs data due Wednesday to anticipate the Federal Reserve's next move, though the PHLX chip index bucked the broader trend to grow 1.3%.

Individual equity performance was fragmented, with FICO shares dropping about 27% after a housing regulator suggested a single pricing framework. AMD stock rose on news that it will acquire World Labs, a startup by Fei-Fei Li, for $8.2B, while reports emerged that Anthropic is targeting a $2T IPO valuation. Additionally, Conference Board consumer confidence fell to 81.9, a nearly 12 year low, and Brent crude oil dipped 1.7% to $96.