AI and rate fears weigh on markets on 14/09/2026

1. US STOCKS SLIP MID-SESSION: At midday on 14/09/2026, the S&P 500 was at 7,626.15 (-0.40%), the Nasdaq Composite at 26,203.84 (-0.49%), and the Dow Jones at 52,486.56 (-0.16%), according to Benzinga. Earlier, CNBC TV18 reported the S&P 500 down about 0.6%, the Nasdaq down about 0.9%, and the Dow down about 160 points. The 10-year US Treasury yield hit 5.00%, its highest since October 2023, pressuring equity valuations, especially rate-sensitive growth stocks.

2. GLOBAL AI SELL-OFF ACCELERATES: SoftBank Group dropped 10.7%, its largest fall in nearly three months, after OpenAI CEO Sam Altman said OpenAI would not IPO this year. In South Korea, SK Hynix fell 6.4% and Samsung Electronics fell 4.1%; in Europe, SOITEC fell 12.6%, Aixtron fell 12.0%, and ASML fell 6.1%. In the US, Nvidia and Broadcom each fell about 3%, AMD and Intel about 5%, Marvell about 6%, while Corning dropped about 12% after announcing a $2 billion offering. The selling followed calls by U.S. AI leaders to slow AI development on safety grounds, raising concern about demand for chips and AI infrastructure.

3. OIL REBOUNDS ON MIDDLE EAST SUPPLY RISKS: Brent crude rose 2.6% to $107.36 a barrel; WTI rose 2.4% to $102.48, according to Reuters, while another source cited a 3.31% increase to $103.36. Saudi Arabia shut its East-West pipeline after drone attacks, and an Iran-Gulf foreign ministers meeting on the Strait of Hormuz was postponed. These developments heightened concern over supply disruptions and shipping security in the Middle East, supporting a sharp rebound in oil prices.

4. ASIAN MARKETS MIXED: Japan's Nikkei 225 fell 0.81% to 63,492.99, South Korea's KOSPI slumped 3.26% to 6,684.37, Hong Kong's Hang Seng rose 0.45% to 24,917.60, the Shanghai Composite slipped 0.07% to 3,885.33, Australia's ASX 200 added 0.10% to 8,749.90, and India was closed for a holiday. The KOSPI's sharp decline reflected heavy exposure to chipmakers, while gains in Hong Kong and Australia partly offset losses elsewhere; investors also awaited the Federal Reserve's rate decision.

5. EUROPEAN EQUITIES MOSTLY LOWER: The FTSE 100 rose 0.44% to 10,697.57, but the DAX fell 0.50% to 25,440.81, the CAC 40 fell 0.76% to 8,117.78, and the STOXX 600 fell 0.49% to 635.99. Semiconductor and technology shares led declines on AI slowdown concerns, with Infineon down 7.9% and STMicroelectronics down 6.8%. Rising oil prices may add inflation pressure in the euro area, while money markets priced more than an 85% chance of a Fed rate hike this week.

What to watch today: The Federal Reserve's policy meeting this week, with markets pricing roughly an 88% probability of a rate hike, according to fed funds futures.

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