Stock market today: Dow rises, S&P 500 and Nasdaq fall as chip stocks slide amid AI jitters

LIVE Stock market today: Dow rises, S&P 500 and Nasdaq fall as chip stocks slide amid AI jitters Grace O'Donnell and Jake Conley Updated Thu, July 16, 2026 at 7:24 PM GMT+2 1 min read TSM ^GSPC ^IXIC ^DJI UNH US stocks split on Thursday as investors took stock of the AI boom and key earnings reports, while an escalation in the US-Iran war continued to weigh. The Dow Jones Industrial Average ( ^DJI ) pared gains to trade just above the flat line, while the S&P 500 ( ^GSPC ) fell 0. 3%.

The Nasdaq Composite ( ^IXIC ) declined by 0. 9% as chip stocks came under pressure for a second day. Semiconductor stocks continued to slide after Taiwan Semiconductor Manufacturing Company's ( TSM ) robust earnings failed to impress markets that have cycled through risk-on and risk-off sentiment as investors scrutinize high valuations.

TSMC reported record second quarter revenue and lifted its capex spending outlook for the year, but the stock fell in premarket trading after the company warned of higher prices. UnitedHealth Group ( UNH ) also reported a Q2 earnings beat , as did GE Aerospace ( GE ) before the opening bell, while Netflix's ( NFLX ) second quarter report highlights the earnings calendar after the close. Investors, meanwhile, continue to monitor oil's movement through the Strait of Hormuz after the US launched its latest wave of airstrikes on Iran on Wednesday.

The Wall Street Journal reported Wednesday that Trump was briefed by aides on options to expand the conflict, including by increasing bombing and deploying ground forces. In economic data, retail sales showed consumers in June were weighed down by gasoline spending, while jobless claims showed fewer initial unemployment claims than expected, a positive development for the labor market.