The U.S. stock selloff that began as a roughly $650 billion wipeout across Nasdaq and chip names turned into a much deeper market break on Friday, with about $1.7 trillion erased from equities as traders dumped AI, semiconductor and momentum-linked shares. The S&P 500 fell 2.64% to 7,383.74, while the Nasdaq Composite lost 1,121.53 points, or 4.18%, to 25,709.43. The Dow Jones Industrial Average dropped 695.15 points, or 1.35%, to 50,866.78.