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Semiconductor Stocks Slide Into Bear Market as AI Rally Reverses

TSMC’s much larger capital‑spending plan and weak forward guidance from Netflix forced investors to reassess costly AI buildouts, pushing global markets lower.

Traders work on the floor at the New York Stock Exchange (NYSE) in New York City, U.S., July 16, 2026.  REUTERS/Brendan McDermid
A pedestrian walks past a stock quotation board showing the Nikkei share average outside a brokerage in Tokyo, Japan, July 17, 2026. REUTERS/Manami Yamada/File Photo
An NVIDIA logo and a computer motherboard appear in this illustration taken August 25, 2025. REUTERS/Dado Ruvic/Illustration/File Photo
People walk in front of an electronic stock board showing Japan's Nikkei 225 index at a securities firm Wednesday, July 15, 2026, in Tokyo. (AP Photo/Eugene Hoshiko)

Overview

  • Global equity markets fell this week after a sell‑off in semiconductor and AI‑exposed stocks knocked major indexes down and sent the PHLX semiconductor index into or toward bear‑market territory.
  • Taiwan Semiconductor Manufacturing’s strong profit report was eclipsed by a jump in its full‑year capex guidance, which spooked investors who worried about the scale and timing of AI infrastructure spending.
  • Netflix’s weaker‑than‑expected third‑quarter revenue forecast deepened the rout by hitting tech sentiment and adding fresh selling pressure on U.S. markets.
  • Escalating U.S.‑Iran strikes lifted oil prices and risk premia, and extreme volatility in South Korea prompted authorities to curb leveraged, derivative‑based ETFs tied to major chip names.
  • The move reverses a concentrated rally driven by expectations of large data‑center and memory demand, and it raises the risk that AI capital spending will be re‑priced if expected returns fail to materialize.