U.S. automakers and parts suppliers were among the sectors hit hardest in early trading May 31 after President Donald Trump’s threat to impose a tariff of up to 25% on Mexican goods. General Motors Co. and Ford Motor Co. each fell more than 3%.

FedEx Corp. shares plunged Dec. 19, after its “jarring” cut to annual forecasts and bleak commentary about European economy and global trade alarmed the market.