U.S. stocks extended their selloff on Thursday, with the S&P 500 falling for a third straight session, sliding 1.2% and officially turning negative for the year. Mounting concerns around artificial intelligence, economic momentum, and labor-market softness pushed investors further into risk-off mode. The Dow Jones Industrial Average dropped 1.2%, while the Nasdaq Composite led losses with a 1.6% decline, reflecting renewed pressure on technology stocks. AI Anxiety Spreads Beyond Tech The selloff began earlier in the week as technology stocks came under pressure, driven by fears that rapid advances in AI could disrupt large portions of the software industry, rather than simply boost productivity. By Thursday, those concerns had spread well beyond tech, weighing on most sectors across th