Indian stock markets began trading on a positive note, tracking gains in global oil prices and optimism over US-Iran peace breakthrough. Sensex surged over 114 points to 75,982, while Nifty climbed 56 points to 23,964 in early trade. Bank Nifty outperformed with a jump of 11 points. Meanwhile, the rupee traded slightly weaker at 95.05 against the US dollar.