U.S. stocks closed lower Monday as investors looked ahead to earnings from Walmart, Home Depot and Lowe's for a clearer read on consumer demand, while stalled U.S.-Iran talks lifted oil prices and left energy as the only sector to finish higher. The Dow Jones Industrial Average fell 272.63 points, or 0.51%, to 53,459.78, the Nasdaq Composite slipped 0.32% to 26,644.91 and the S&P 500 lost 0.52% to 7,745.06; communication services and consumer staples led the declines, while the Philadelphia Semiconductor Index rose 1.64% after Nvidia CEO Jensen Huang said OpenAI had committed to large-scale deployment of Nvidia AI infrastructure by 2030. Front-month WTI crude rose 2.55% to $84.50 a barrel and Brent climbed 2.65% to $90.87 after the 60-day U.S.-Iran negotiation window expired without substantive progress, while the 30-year Treasury yield climbed to 5.29%, its highest since 2007, steepening the yield curve as investors weighed heavy debt issuance, sticky inflation and weaker demand for long-dated bonds. Airline shares fell sharply, Nike slid to its lowest level since September 2014, Chinese ADRs were mixed, and markets turned to Wednesday's Federal Reserve minutes, retail earnings and fresh manufacturing and housing data for direction.