At close, the Sensex was down 524.96 points or 0.89% at 58,490.93, and the Nifty was down 188.30 points or 1.07% at 17,396.90 for the second day spooked by a possible spillover of China's Evergrande's debt woes, fall in commodity prices and ahead of US Federal Reserve policy meet outcome. About 995 shares have advanced, 2308 shares declined, and 132 shares are unchanged. Hindustan Unilever was the top Sensex gainer followed by Bajaj Finserv and ITC. Tata Steel was the top loser, followed by the State Bank of India, IndusInd Bank, and HDFC. Barring the Nifty FMCG index all indices ended in red. Nifty Metal tumbled the most followed by the Nifty PSU Bank index, down 6.6 percent and 4.18 percent, respectively. Nifty Realty, Bank, Pharma also tanked nearly 2 percent each. The BSE Midcap index plunged 1.84 percent and the BSE Smallcap 1.8 percent. India VIX zoomed 14.85% during the day to close at 17.49.