Swingfolio Daily — US Markets
US briefings — Monday, September 14, 2026
Pre-market setup and closing-bell recap for Monday, September 14, 2026. Observations only — no trade advice.
Monday, September 14, 2026
US Pre-Market, 14 September 2026: Nasdaq 100 Futures 1.60% Lower as AI Leaders Call for a Slowdown and Brent Tops US$108
Nasdaq 100 futures are 1.60% lower at 28,918 and S&P 500 futures 0.65% lower at 7,609.75 at 8:32am ET on 14 September 2026 after Anthropic's Dario Amodei, backed by Sam Altman and Elon Musk, called for a slower pace of AI capability gains. SMH.US is down 4.70% pre-market, with GLW.US -8.87% and LRCX.US -8.19%, while CRWD.US rose 5.40%. Brent is 3.35% higher at US$108.11 with Saudi Arabia's East-West pipeline shut. Fed funds futures price about an 86% chance of a hike at Wednesday's FOMC decision.
S&P 500 falls 0.48% as chip stocks drop 5.86% after an AI slowdown call and security software rises
The S&P 500 closed at 7,619.98 on 14 September 2026, down 0.48%, as chipmakers fell after Anthropic CEO Dario Amodei called for slower AI development; the PHLX Semiconductor index lost 5.86%. Technology (XLK.US -1.81%) took about 60 bps off the index while communication services (XLC.US +2.19%), health care and staples added about 41 bps. Security software rose, with ZS.US +16.52% and CRWD.US +13.85%. GLW.US fell 13.70% on a $2bn share sale program and BAC.US 5.14% on weak fee guidance. The 10-year yield touched 5.012% before closing at 4.961%, two days before the FOMC decision.