General Motors led the decline among firms straddling the Canadian border, hit by falling second-quarter sales and inventory constraints. Ford Motor followed suit, struggling alongside the broader automotive sector as electric-vehicle demand cools. The market turbulence reached beyond heavy manufacturing, ensnaring AI-linked stocks. Corning shares plunged more than 10% as investors retreated from optical-fiber suppliers central to data-center infrastructure.

Monetary policy remains a primary source of investor apprehension. Federal Reserve Chair Kevin Warsh deflected questions regarding potential rate hikes, refusing to commit to a specific course of action despite mounting inflationary pressure. Meanwhile, private payroll growth hit 98,000 in June, missing analyst targets. Bank of America Global Research economists warned that current labor and inflation data shifts the spotlight toward the July Fed meeting, with some analysts predicting a reversal of last year’s 75 basis points of cuts as early as September.