At Close, the Sensex was down 497.73 points or 0.89% at 55,268.49, and the Nifty was down 147.20 points or 0.89% at 16,483.80, as investors chose to stay on the sidelines ahead of the US Federal Reserve's monetary policy outcome on Wednesday. Infosys was the worst performing stock on Sensex, down 3.45%, accompanied by Hindustan Unilever, and Axis Bank. Zomato dived another 12.5% on Tuesday. Bajaj Finserv zoomed 5.58%, along with Power Grid and Bharti Airtel. About 1119 shares have advanced, 2128 shares declined, and 138 are unchanged. In the broader market, the BSE MidCap and SmallCap indices dropped over 1 percent each. All the sectoral indices ended in the red with metal, IT, pharma, auto, bank, capital goods, realty, and FMCG indices down 1-2 percent. Bank Nifty ended at 36,408, down 0.87% while India VIX rise 2.77% to breach 18 levels.