U.S. equities plunged, with the S&P 500, Nasdaq and Dow posting their largest
single-day declines since April 3, 2025. The Nasdaq closed 11.9% below its Oct.
6 record, entering technical correction territory. The Philadelphia
Semiconductor Index tumbled 12.5%, its biggest one-day drop since March 2020.
Aggregate market capitalization of S&P 500 constituents fell roughly $3
trillion.