Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTRich AsplundThu, July 16, 2026 at 10:39 PM GMT+2 8 min readView 2 of the trading floor of New York Stock Exchange by Lev Radin via ShutterstockThe S&P 500 Index ($SPX) (SPY) on Thursday closed down -0.51%, the Dow Jones Industrial Average ($DOWI) (DIA) closed down -0.20%, and the Nasdaq 100 Index ($IUXX) (QQQ) closed down -1.62%. September E-mini S&P futures (ESU26) fell -0.50%, and September E-mini Nasdaq futures (NQU26) fell -1.58%. Stock indexes settled lower on Thursday, with the Nasdaq 100 falling to a 1-week low. The weakness in chipmakers and AI-infrastructure stocks weighed on the overall market on Thursday amid concerns over whether massive artificial intelligence investments will justify current lofty valuations. Chipmakers had negative carryover pressure on Thursday from a -6% plunge in South Korea's Kospi Index, which was weighed down by sharp losses in SK Hynix and Samsung Electronics. More News from BarchartMicron Stock Is Off 31% From Its High. Why This Could Be the Best Time to Buy.