Stock Market Today: Dow Falls 313 Points, Nasdaq Cut Losses; IBD 50 Leader SiTime Soars But Fastly Plunges (Live Coverage)

The Dow Jones Industrial Average and other major stock indexes reversed lower Thursday as Wall Street digested initial unemployment claims data. Small caps sank the hardest, while other financial markets swung amid an uncertain future over Iran. Advanced chip designer and AI play Arm (ARM) was a significant loser, sliding about 10% on the stock market today. At the close,…