Indian stock markets closed higher for the straight 8th session on September 12, with Sensex gaining 355 points to end at 81,904 and Nifty 50 settling at 25,114. Financial services and metal stocks led the rally, while consumer stocks such as HUL and Eternal slipped 2% each. Auto shares rebounded, with Maruti Suzuki and Eicher Motors among the top gainers.