A remarkable two-month sprint higher for the major U.S. stock-market indexes encountered its first major hiccup on Friday, as the Nasdaq Composite plummeted more than 1,121 points — its biggest one-day point drop on record, according to Dow Jones Market Data. That translated to a 4.2% decline for the Nasdaq, the biggest in percentage-point terms since April 10, 2025, data showed. A 2.6% drop for the S&P 500 on Friday was its worst since Oct. 10.