Tata Consultancy Services is losing its valuation edge over peers as a recent sell-off, sparked by Accenture's weak fourth-quarter outlook, weighed on its stock. Bloomberg data shows TCS trades at 13.5 times one-year forward earnings, close to Wipro's 13.1 times. HCL Technologies commands the highest multiple at 15.4 times, while Infosys trades at a similar level to TCS.