Yahoo Finance سي ثري · AI The AI Trade Leads Today's Stock Market Rally Sep 21, 2026 5:36 PM · YahooFinance Stocks climbed on Monday with tech leading the march higher as investors eyed the possibility of a U.S.-Iran deal. The Nasdaq Composite added 1.4% as the S&P 500 gained 0.9%. The Dow Jones Industrial Average gained 0.4%, or 194 points. Communication services and information tech were the best performing sectors, rising 3.2% and 1.3%, respectively. Original source: YahooFinance