Nifty ends below 8,300 amid volatility; ITC slumps 3%: Benchmark indices end marginally lower on Wednesday amid volatility as weakness in the metal shares owing to a growth forecast cut by the World Bank and Index heavyweight ITC capped gains. Also, the wholesale price index-based inflation which inched up to 0.11% in December weighed on the indices. The Sensex ended lower by 78.9 points at 27346.8 and the Nifty was down 21.85 points at 8277.5. The market breadth indicating the overall health of the market was weak. In the foreign exchange market, the rupee is trading flat against the dollar. Meanwhile, foreign institutional investors were net buyers in Indian equities worth Rs 235 crore on Tuesday, as per provisional stock exchange data.