Nasdaq Posts Worst Week Since June as AI Sell-Off and Oil Hit Stocks After Hot September CPI

The S&P 500 fell 1.09% to 7,659.44 and the Nasdaq Composite dropped 2.14% to 26,140.03 on Friday, Oct 16, per CNBC and Yahoo Finance coverage. The S&P lost about 2% on the week and the Nasdaq more than 4%, its worst week since June. Coverage attributes the slide to an AI-related tech sell-off and higher oil prices. September CPI came in above expectations on Wednesday, pushing the 10-year Treasury yield to about 5.25% (peak 5.33%) before it eased to roughly 5.07% by Friday; Bloomberg bond-futures pricing put the odds of an October Fed hike near 15%. Figures vary slightly across outlets.