Markets tumble on AI sell-off and oil spike as Iran ceasefire collapses
The S&P 500 had its worst day since July as AI infrastructure stocks led the decline and oil surged on reports the U.S. and Israel are preparing to restart strikes against Iran. The U.S.-Iran ceasefire effectively collapsed this week, with renewed security incidents in the Strait of Hormuz and missile exchanges resuming. The Federal Reserve holds rates steady this week, with the dot plot signaling one more hike in 2026. Plus, a notable FDA clearance for a new PTSD brain-stimulation therapy and…
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