Wall Street tumbles as tariff whiplash and falling AI stocks drag Nasdaq 10% below its record

NEW YORK (AP) — Wall Street's sell-off kicked back into gear on Thursday, and a U.S. stock market rattled by the whiplash created by President Donald Trump's tariffs and uncertainty about the economy fell sharply. The S&P 500 tumbled 1.8% to resume its slide after a mini-recovery from the prior day clawed back some of its sharp drop over recent weeks. The Dow Jones Industrial Average dropped 427 points, or 1%, and the Nasdaq composite sank 2.6% to finish more than 10% below its record set in December. Stocks fell even though President Trump on Thursday offered a one-month reprieve…