Indian benchmark indices opened higher on Tuesday, with Sensex up 122 points and Nifty gaining 36 points. Maruti Suzuki, Infosys, and HDFC Bank led early sectoral gains. The Nifty Bank index fell 26.30 points, or 0.05 per cent, to 55,258.45. The Nifty Midcap 100 was at 58,686.55, down 12.95 points, while the Nifty Smallcap 100 rose 4.25 points to 18,293.15. Among Sensex stocks, Maruti Suzuki, M&M, Tata Motors, Infosys, HDFC Bank, Tech Mahindra, and Axis Bank led the gains, while Ultratech Cement, Sun Pharma, Trent, and Asian Paints were the top losers.