At close, the Sensex was down 77 points or 0.13% at 57200.23, hit a high of 58,084-mark, up 807 points intra-day, and the Nifty down 8 points or 0.05% at 17101.95 ended a week of extreme volatility marginally in the red note on Friday, following the US Federal Reserve's monetary policy meeting.NTPC was the top gainer, followed by Sun Pharma, IndusInd Bank, and ITC. Maruti Suzuki was the top loser, accompanied by Tech Mahindra, Power Grid Corporation, and ICICI Bank. The BSE MidCap and SmallCap indices bucked the trend and ended 1 percent higher. Among sectors, financials and autos were the only losers today. The Nifty Bank index slipped 0.7 percent while the Nifty Auto index dropped 0.6 percent. On the contrary, the Nifty IT, Pharma, and Realty indices gained around 1 percent each. India VIX was down 1.76%