Indian benchmark indices Sensex and Nifty ended lower on Monday, dragged by losses in metal and IT stocks. The Sensex declined 307.24 points, or 0.40%, to 76,957, while the Nifty 50 dropped 95.25 points to 24,080. Sun Pharma and ICICI Bank were among the top BSE gainers, while Adani Ports and ITC led the losses.