The Dow Jones Industrial Average jumped 556.21 points, or 1.08%, to close at 52,177.69 on Thursday, 15 October 2026, even as the AI trade that has carried markets for most of the year came under fresh pressure. The blue-chip index outperformed because investors were not fleeing stocks altogether. They were fleeing one corner of them.
The S&P 500 gained 0.33% to finish at 7,744.06, led by healthcare. The Nasdaq Composite, the index most exposed to the AI buildout, scraped out a gain of just 0.08% at 26,713.03 after dropping as much as 1.4% during the session. Treasury yields fell sharply as bonds rallied, a sign that money was looking for shelter rather than exits.
Why the Dow rose while AI stocks fell
The divergence tells the story. Concerns that technology companies are overspending on artificial intelligence pushed traders to rotate out of chipmakers and data-center names and into value-oriented sectors. Consumer discretionary and materials helped lift the Dow, while Walmart climbed 1.5% and Nike jumped more than 5%, according to CNBC’s coverage of the session.
The breadth of the market improved at the same time. More than half of S&P 500 constituents were trading above their 200-day moving averages on Thursday, up from under 40% at the end of September, when gains were concentrated in a handful of tech names. Walmart, Kroger, HCA Healthcare and United Health Services were among the stocks crossing that widely watched long-term trend line for the first time in over a month.
In other words, the rally broadened precisely because the AI trade wobbled.
A chip rout with deep roots
The pressure on semiconductors is not a one-day event. The iShares Semiconductor ETF (SOXX) fell for an eighth consecutive trading day on Thursday, its longest slide since September 2015, and has lost more than 15% over that stretch. The VanEck Semiconductor ETF (SMH) also logged an eighth straight decline, its worst run since May 2006. CNN reported that a closely watched index of chip stocks is down roughly 20% since a peak in June.
The selling went global overnight. South Korea’s Kospi, dominated by Samsung Electronics and SK Hynix, plunged 7.6% to a six-month low, with SK Hynix down 11% and Samsung off 9.5%. The drop was severe enough to trigger a circuit breaker that temporarily halted trading on the exchange. Japan’s Nikkei finished 4.9% lower and Hong Kong’s Hang Seng slipped 1%.
Two forces fed the rout. The first is competition from China: Chinese semiconductor company CXMT has announced progress on advanced memory chips, and Tesla CEO Elon Musk amplified the worry in a post on X, writing that “China will be making a LOT of RAM in 2028.” The second is cost. Rising borrowing expenses threaten to make the enormous debt-funded AI buildout harder to finance.
TSMC strikes a cautious note despite record profits
TSMC, the world’s largest manufacturer of advanced chips, reported its sixth consecutive record quarterly profit after the market closed in Taiwan on Thursday. Its shares still finished 2% lower, dragging an index of the market’s technology stocks down 3.5%.
The reason was tone, not numbers. TSMC CEO C.C. Wei told analysts that rising component prices and macroeconomic uncertainty were challenging demand in some segments of the market, and the company struck a cautious note on 2027. For investors who had priced in uninterrupted AI demand, that was enough.
Anthropic’s revenue growth becomes the market’s Rorschach test
Because frontier AI companies Anthropic and OpenAI remain privately traded, investors hunt for clues about AI demand wherever they can find them. On Thursday, the clue came from Anthropic.
Sources told CNBC that Anthropic’s revenue grew to $16.8 billion in the third quarter, up from $11.6 billion in the second quarter. Multiple outlets reported the company, at an investor presentation ahead of a planned IPO expected in the near future, announced sales grew 45% quarter over quarter. That is rapid growth by any ordinary standard. It was not rapid enough for a market that had watched Anthropic’s revenue more than double in the second quarter from $4.7 billion in the first.
DA Davidson analyst Gil Luria said the figure was “not what anyone wanted to see.” Some traders worried that the AI lab’s top line might not be growing fast enough to justify the lofty gains in chipmakers.
Saxo strategist Neil Wilson summed up the mood in a note: “Worries about the AI buildout, bubbly valuations, lower-than-expected earnings growth at leading US frontier labs, Chinese competition, inflation and rates sent investors running for the covers.”
CoreWeave: from 15% plunge to 6% rebound
Few names capture the anxiety better than CoreWeave, the Nvidia-backed data-center operator carrying tens of billions of dollars of debt. The stock tumbled 15.5% on Wednesday as investors grew fearful the company was borrowing too much for its AI buildout, and its corporate bond yields surged alongside those of Oracle, which fell 2.1% on Thursday after a nearly 9% drop the previous session.
Then came the reversal. CoreWeave shares, down as much as 9.5% in morning trading on Thursday, closed nearly 6% higher after Nvidia CEO Jensen Huang told Bloomberg he was optimistic about the company. Deutsche Bank analyst Brad Zelnick had called Wednesday’s dislocation a buying opportunity, writing that CoreWeave “continues to scale rather responsibly” and that near-term liquidity was in decent shape.
Micron Technology also rebounded from earlier losses to gain nearly 2%, though Nvidia slipped 1.8% and AMD dropped 2.3% in the broader chip complex.
The longer-term worry lingers. Research firm Gartner published a report on Wednesday forecasting that over 80% of neocloud providers, the specialized AI cloud infrastructure companies of which CoreWeave is the most prominent example, will cease operations by 2030 due to costs and a lack of a unique business model.
Hot inflation data raises the stakes for the Fed
None of this happens in a vacuum. Wednesday brought a hotter-than-expected consumer price report, and Thursday’s September producer price index showed a 1.3% monthly increase and a 6.3% year-over-year rise, the biggest monthly and yearly gains since 2022, according to figures cited by CNBC.
“Today’s PPI report, after Wednesday’s CPI, confirms inflation is getting worse as energy prices stay high,” said David Russell, global head of market strategy at TradeStation. “Election or no election, prices are rising and the Fed might be forced to act.”
Fed funds futures reflect the shift. Traders priced a 27% chance of a rate hike later this month, up from 20% a week earlier, and put the odds of a 25-basis-point move in December at 67%, according to CME Group’s FedWatch tool. Higher rates cut two ways for the AI trade: they raise the cost of debt-funded data-center expansion and they make risk-free Treasury yields, now around 5% and the highest since the early 2000s, a genuine alternative to speculative tech bets.
“When Treasurys are yielding 5% and that’s the highest since the early 2000s, investors are going to start weighing that versus taking a huge bet on AI,” said Alex Shahidi, co-CIO of MAI Capital Management’s Evoke. “It’s not are you in or out of AI; it’s how concentrated you want to be.”
What comes next: earnings and the midterms
The earnings season may decide whether the rotation deepens or the AI trade regains its footing. Analysts expect S&P 500 profits to grow 30.6% in the third quarter, according to LSEG data, with technology and energy companies doing the heavy lifting. Jefferies economist Mohit Kumar expects the results to show that earnings and demand remain robust, though he cautioned that a slowdown in the AI infrastructure buildout “would imply a sharp slowdown in US growth expectations.” He noted the US is spending more on AI annually as a percentage of GDP than it did on building railways across the country in the 1800s.
Politics adds another layer. Investors are betting on an enormous data-center buildout, and moratoriums or other slowdowns ahead of the midterm elections could hurt forecasts for returns. Jefferies said it would look to take some chips off the table before the vote, since a potential Democrat win in Congress “would be considered negative for the sector.”
Not every stock followed the script. Rocket Lab dropped 9.7% after saying the inaugural launch of its larger Neutron rocket was delayed until next year. And Baird upgraded Bank of America to outperform despite a soft quarterly report, calling the sell-off “overdone” and pointing to the bank’s 2027 net interest income outlook and attractive valuation.
For now, the market’s message is clear: it has not given up on stocks, but it is no longer willing to pay any price for the AI trade. Whether Thursday’s broadening marks a durable rotation or a brief pause in the chip rout will likely be settled by the next round of earnings, the next inflation print and, ultimately, the Fed.
FAQ
How much did the Dow Jones Industrial Average rise on 15 October 2026?
The Dow gained 556.21 points, or 1.08%, closing at 52,177.69 on Thursday, 15 October 2026. The S&P 500 rose 0.33% to 7,744.06 and the Nasdaq Composite edged up 0.08% to 26,713.03 after being down as much as 1.4% intraday.
Why did the Dow rise while AI and chip stocks fell?
Investors rotated out of the concentrated AI trade, worried about chip overspending, Chinese competition, rising borrowing costs and slowing revenue growth at AI labs like Anthropic, and moved into value sectors such as healthcare, retail and consumer discretionary, plus government bonds.
How bad was the chip stock selloff?
The iShares Semiconductor ETF fell for an eighth straight day, its longest slide since September 2015, and is down more than 15% over that stretch. South Korea’s Kospi plunged 7.6% to a six-month low, triggering a circuit breaker, while Japan’s Nikkei fell 4.9%.
What did Anthropic report about its revenue?
Sources told CNBC Anthropic’s third-quarter revenue grew to $16.8 billion, up from $11.6 billion in the second quarter, a roughly 45% quarterly increase reported ahead of a planned IPO. Growth was slower than the prior quarter, when revenue more than doubled from $4.7 billion, which disappointed some traders.
What are the odds of a Fed rate hike?
According to CME Group’s FedWatch tool, traders priced a 27% chance of a rate hike later in October 2026, up from 20% a week earlier, and a 67% probability of a 25-basis-point hike in December, after September inflation data came in hotter than expected.