U.S. stocks traded lower on Thursday afternoon, July 16, as a renewed selloff in artificial-intelligence and semiconductor shares pulled the major indexes down. The weakness was most visible in technology, while the Dow held up better because health insurers and other non-tech companies rose.
The short answer: This was less a marketwide panic than a concentrated retreat from some of 2026's biggest AI winners. Nvidia, Micron, Sandisk and Western Digital carried enough weight to offset gains in most other stocks, while the 10-year Treasury yield near 4.56% made richly valued growth shares harder to justify.
That distinction matters. A falling index can look like every company is losing value, but the S&P 500 and Nasdaq give their largest members an outsized influence. When a giant such as Nvidia falls, dozens or even hundreds of smaller gains may not be enough to keep the headline benchmark positive.
The numbers
In a late-afternoon snapshot, the SPDR S&P 500 ETF was down about 0.8%, the technology-heavy Invesco QQQ Trust was down about 2.0%, and the SPDR Dow Jones Industrial Average ETF was off about 0.5%. The figures reflect delayed market data shortly after 3:30 p.m. Eastern and can change before the closing bell. Earlier in the afternoon, the majority of stocks listed on Wall Street were actually higher, according to Associated Press market reporting.
The losses were much steeper inside the AI trade. Nvidia was the single biggest drag on the S&P 500. Micron, Sandisk and Western Digital also dropped sharply after enormous year-to-date gains, a reminder that the most crowded trades can fall quickly even without a collapse in the underlying business.
Why strong TSMC earnings were not enough
The day's most revealing signal came from Taiwan Semiconductor Manufacturing Co., the chip foundry that makes advanced processors for many of the world's largest technology companies. TSMC reported second-quarter revenue of $40.20 billion, up 33.7% from a year earlier. Net income rose 77.4%, and advanced manufacturing technologies accounted for 77% of wafer revenue.
Those are powerful results, but investors were already expecting an exceptional AI boom. TSMC's U.S.-traded shares fell even as the company projected third-quarter revenue of $44.6 billion to $45.8 billion. The market focused on the cost of building more capacity and on a projected gross-margin range of 65% to 67%, below the second quarter's 67.7%.
The reaction shows how expectations work. A company can beat current forecasts and still fall if its stock price assumes years of near-perfect growth. With AI-linked shares already responsible for a large part of the market's 2026 gain, investors needed more than good news; they needed news strong enough to raise an already demanding outlook.
Bond yields and the economy added pressure
The bond market supplied a second headwind. The 10-year Treasury yield edged up to about 4.56%, compared with 3.97% before the Iran conflict, according to AP. Higher yields increase borrowing costs and reduce the present value investors assign to profits expected far in the future, which tends to hurt high-growth technology stocks most.
Thursday's economic reports did not offer one clean signal. The Census Bureau said June retail and food-service sales rose 0.2% from May to $768.6 billion, less than economists expected, while separate labor and manufacturing data pointed to continued resilience. The mix left investors balancing slower consumer spending against an economy that may still be firm enough to keep interest rates elevated.
Oil remained another background risk. The Federal Reserve's July Monetary Policy Report said energy prices had surged after the Middle East conflict constrained shipping through the Strait of Hormuz. Even though crude eased later Thursday, the possibility of another energy-driven inflation shock has kept bond yields and rate expectations sensitive to geopolitical headlines.
Why the Dow held up better
The relative strength outside technology helped limit the damage. Abbott Laboratories and UnitedHealth Group rose after reporting better-than-expected results, giving the Dow support that the Nasdaq did not have. That split is a useful read on the session: investors were not abandoning stocks indiscriminately; they were rotating away from the most expensive and crowded AI-linked names.
What to watch next
The first test is whether semiconductor selling spreads into banks, industrials, consumer companies and other sectors that were firmer Thursday. If market breadth remains positive, the move may stay a technology-led reset. If more sectors begin falling together, the decline would become broader and more concerning.
Investors will also watch the 10-year Treasury yield, oil prices and the next round of major technology earnings. The Federal Reserve meets July 28-29, and any change in the outlook for rates could amplify or relieve pressure on growth stocks. For now, July 16's decline says more about the market's dependence on a handful of AI heavyweights than it does about a sudden breakdown across the entire U.S. economy.
