Indian stock markets ended lower on November 21, snapping a two-day gaining streak. The Sensex fell 400 points and Nifty dropped below 26,100 amid weak global cues and selling across most sectors. Broader indices underperformed, with Capital Goods, Realty, PSU Bank, and Metal sectors seeing significant declines. Hindalco Industries was a notable loser due to a plant fire, while Capillary Technologies made a weak debut.