Nifty ends at around 17,900, Sensex falls 150 pts; IT stocks gain, metals drag Benchmark indices ended lower in the second consecutive session on January 16.Adani Enterprises, Axis Bank, Hindalco Industries, JSW Steel and TCS were among the top losers on the Nifty, while gainers were Tech Mahindra, Infosys, HCL Technologies, Wipro and Hero MotoCorp.