IT stocks led market gains on Monday, with heavyweights Infosys and TCS jumping 2-3 percent each, and the Nifty IT index climbing more than 2 percent as easing expectations of a US Federal Reserve interest rate hike boosted sentiment towards the rate-sensitive sector. The improvement in the US Fed outlook followed a sharp decline in crude oil prices after the United States and Iran paused military action over the weekend, easing concerns over inflation.