15:40 · 15 October 2026

US Open: Nasdaq 100 extends losses 🚩 AI stocks under pressure, CoreWeave falls 8%

Wall Street remains under pressure today as investors grapple with growing concerns over the scale of artificial intelligence spending and further signs of persistent inflation in the US. The S&P 500 is down around 0.3%, while the Nasdaq 100 is falling 1.1%. The Dow Jones is showing relative strength, gaining around 0.4%. The heaviest pressure is concentrated in the technology sector, where investors are increasingly questioning the pace of monetization of the AI boom relative to very high capital expenditures and rising debt levels. At the same time, the stronger-than-expected PPI reading is reinforcing concerns that the Fed may be forced to maintain a more restrictive stance for longer than markets had previously assumed. Today’s session therefore points to a clear rotation out of technology and into more defensive and traditional market segments.

  • CoreWeave is down around 8%, extending Wednesday’s sell-off, when the shares fell by more than 15%. Investors are increasingly concerned that the company is financing its AI infrastructure build-out too aggressively with debt, which is also reflected in the sharp rise in yields on its corporate bonds.
  • Sentiment across the AI sector also deteriorated after reports that Anthropic’s revenue rose to $16.8 billion in the third quarter. Although the scale of the business continues to grow, some investors are beginning to question whether revenue growth is strong enough to justify the very high valuations of chipmakers and infrastructure providers.
  • The sell-off has spread more broadly across the semiconductor and memory sectors. Micron Technology is down around 4%, AMD about 5%, Sandisk around 6%, while US-listed shares of SK Hynix are falling roughly 5%. Another sign of weakness came overnight in Asia, where South Korea’s Kospi index dropped by more than 7%.
  • At the same time, the market is finding support outside the technology sector. Walmart is up around 4%, while Merck is gaining more than 3%, helping to limit losses across the major indices.
  • September PPI rose 1.3% m/m and 6.3% y/y, marking the strongest monthly and annual increases since 2022. The figures came in well above consensus expectations of 0.6% and 5.5%, respectively.
  • Today’s PPI report comes directly after a stronger-than-expected CPI reading, reinforcing the narrative that inflationary pressures are building again. High energy prices remain a particularly important factor, as they may continue to sustain cost pressures across the economy.
  • For equities, this increases the risk that the Fed may have to tighten policy more aggressively before year-end, or at least maintain a restrictive stance for longer. Such a scenario is particularly unfavorable for highly valued technology stocks, whose valuations are especially sensitive to rising yields and a higher cost of capital.

US100 chart (D1 interval)

Source: xStation5

Company news

  • Rocket Lab — shares of the space company are down nearly 10% after it announced that the launch of its Neutron rocket has been delayed until 2027.
  • Walmart — shares of the retailer are up more than 2% after Deutsche Bank upgraded the stock from “hold” to “buy.” The bank cited a positive outlook for 2027, expects incremental margins to improve, and believes the current inflation environment could help Walmart attract more price-sensitive consumers.
  • CoreWeave — shares of the cloud infrastructure company are falling for a second consecutive session, dropping around 8% on Thursday. Investors are concerned that CoreWeave, like other technology companies, is increasing debt too aggressively to finance the expansion of AI-related infrastructure. The company has a market capitalization of around $38 billion and approximately $51 billion in debt, while it generated a net loss of around $2 billion over the past four quarters.

CoreWeave chart (D1 interval)

Source: xStation5

 

15 October 2026, 13:04

Market Wrap: Tech Sell-Off Hits Europe, Gold Shines Again

15 October 2026, 10:44

Sell-off in the semiconductor market 📉🖥️

15 October 2026, 09:26

UK the harbour in the storm as tech bloodbath continues

15 October 2026, 07:21

TSMC breaks records once again driven by the AI boom

This content has been created by XTB S.A. This service is provided by XTB S.A., with its registered office in Warsaw, at Prosta 67, 00-838 Warsaw, Poland, entered in the register of entrepreneurs of the National Court Register (Krajowy Rejestr Sądowy) conducted by District Court for the Capital City of Warsaw, XII Commercial Division of the National Court Register under KRS number 0000217580, REGON number 015803782 and Tax Identification Number (NIP) 527-24-43-955, with the fully paid up share capital in the amount of PLN 5.869.181,75. XTB S.A. conducts brokerage activities on the basis of the license granted by Polish Securities and Exchange Commission on 8th November 2005 No. DDM-M-4021-57-1/2005 and is supervised by Polish Supervision Authority.