Wall Street ended a choppy session slightly lower on Tuesday as a semiconductor selloff ground on, bond yields stayed elevated and a run of mixed bank earnings gave investors little reason to buy the dip.
How the indexes finished
The decline was modest. The Dow Jones Industrial Average fell about 180 points, or 0.35%, to 51,670.10. The S&P 500 slipped 0.02% to 7,805.45, and the Nasdaq Composite lost 0.15% to 27,204.38. The broader market held up better than technology, which is the sector now carrying the weight of investor worries.
The chip rout
Chip stocks have been under heavy pressure for days. The iShares Semiconductor ETF has fallen for six straight sessions. Micron lost 3.6% on Tuesday and Applied Materials dropped almost 7%. A separate index of chip makers has now lost more than 8% over its current losing run.
The selling has spread beyond the United States. Memory and chip stocks in Asia also took heavy losses, with Taiwan’s chip-heavy benchmark leading declines.
The casino warning
The trigger was a blunt remark by one of the industry’s best-known executives. Speaking in Singapore on Monday, Broadcom chief executive Hock Tan said many AI investors have little idea what they are buying and likened the behaviour to gambling in a casino. The comment carried weight because it came from the head of a major supplier of AI infrastructure. Tan also said OpenAI and Anthropic have shown they can generate substantial revenue, and warned that financing the industry’s huge buildout could become a key challenge.
He was not calling the AI boom a fiction. His remarks were about sentiment and funding discipline, and they landed when investors were already nervous about stretched valuations.
Competition from China
A second worry has arrived alongside the first. Concerns about an overheated AI trade, rising financing costs and intensifying Chinese competition have fed a global chip selloff. Chinese memory makers such as ChangXin Memory Technologies are pushing denser DRAM designs. If cheaper rivals gain ground, memory suppliers could face pressure on prices and profit margins, even if demand from data centres stays strong.
Yields and oil keep the pressure on
Bonds are adding to the unease. The 10-year Treasury yield was trading around 5.2%, with the 30-year near 5.56%. Higher yields make future corporate profits less valuable in today’s money, which tends to hit richly priced technology shares hardest, and they raise the cost of borrowing for companies building new capacity.
Oil is part of the story. Prices rose after Houthi attacks on Saudi Arabia, with Brent futures near $107 a barrel. Investors fear that expensive energy will keep inflation stubborn and interest rates high for longer.
Banks give a mixed signal
Earnings season is now under way. Goldman Sachs reported revenue above forecasts, Citigroup beat profit expectations, Wells Fargo posted mixed results and JPMorgan Chase fell short on both profit and revenue. Bank of America and Morgan Stanley are due to report today, with Bank of America also dealing with a record regulatory penalty announced on Tuesday.
What traders are watching
The next few hours are crowded. September’s consumer price index is due on Wednesday morning, and futures pointed to a flat to slightly higher open, with S&P 500 contracts up about 0.1%. Dutch chip-equipment maker ASML is also due to report results today, which will give investors a fresh read on demand for the machinery behind advanced chips.
There is a cushion under the market, if a thin one. Analysts expect third-quarter earnings at S&P 500 companies to rise by more than 30% from a year earlier, with much of that growth coming from AI-linked technology firms. That strength is exactly why a wobble in chip stocks matters so much: so much of the market’s momentum now rests on a single theme. Whether this week is a healthy pause or the start of a deeper reassessment will depend on inflation, earnings and the cost of money.
