Tech stocks tumble amid volatile week and AI growth concerns

By the Editorial Team · Saturday, October 17, 2026

Technology stocks fell sharply last week, with the Nasdaq 100 closing down more than 4% amid investor concerns about rising interest rates limiting AI-driven growth and debt-fueled expansions, especially in the chip sector. This sell-off reflects growing caution over the sustainability of rapid AI advancements as higher borrowing costs pressure valuations, though some experts believe strong demand for AI innovations will support recovery.

Technology stocks experienced significant declines on Friday, capping a volatile week marked by investor concerns over the sustainability of growth tied to artificial intelligence (AI) and the impact of rising interest rates. The Nasdaq 100 index fell 1.7% early in the session, closing the week with losses exceeding 4%, its worst weekly performance since last spring. The broader S&P 500 dropped about 0.7% on the day and ended the week down 1.6%, while the Dow Jones Industrial Average saw a smaller decline of 0.3%.

Chipmakers, in particular, suffered steep losses amid investor worries about debt-fueled expansion in AI infrastructure. Micron Technology saw its shares decline by around 12% during the week, while other major semiconductor companies like Advanced Micro Devices, Broadcom, and Intel also experienced notable drops ranging from approximately 4.5% to 6%. Data center provider CoreWeave similarly saw a 23% weekly decrease. Technology giants outside the chip sector, including Meta and Alphabet, also finished lower, falling 3.7% and 2.5% respectively.

Analysts attribute the sell-off to concerns that the rapidly rising interest rates in global bond markets may curtail borrowing and investment among companies at the forefront of AI development. Market participants are increasingly cautious about the pace and longevity of AI-driven growth, with higher bond yields pressuring valuations for riskier technology stocks. However, some experts suggest that the decline may be an overreaction to short-term uncertainties and emphasize the strong demand for AI innovations likely to materialize over the coming year.

In the bond market, U.S. Treasury yields remained relatively steady after recent fluctuations. The yield on the benchmark 10-year Treasury note was around 5.13%, slightly lower for the week, reflecting investors’ revised expectations for future Federal Reserve rate hikes. Despite inflation data released this week showing a higher-than-expected 3.7% annual increase for September, markets have tempered expectations from four quarter-point hikes to around three over the next year. Traders are also watching for signals from the Fed, which raised its key interest rate by a quarter-point in September and may adjust policy further depending on economic conditions.

European and Asian stock markets diverged from U.S. losses, closing the day higher, with the Stoxx Europe 600 index up about 0.7%. Oil prices advanced amid ongoing concerns about global supply disruptions linked in part to unresolved geopolitical tensions involving the U.S. and Iran. Brent crude rose over 3.5% to settle near $110 per barrel, reflecting sustained pressure on energy markets.

Overall, the recent market turbulence underscores the challenging environment for technology companies balancing rapid innovation with tightening financial conditions and broader economic uncertainties.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.