At close, the Sensex was up 145.29 points or 0.26% at 55582.58, and the Nifty was up 33.90 points or 0.21% at 16563. Tata Steel was the top Sensex gainer, followed by Bajaj Finance, M&M, Bajaj Finserv, Reliance Industries, and HDFC. Maruti Suzuki was the worst-performing Sensex constituent followed by Bajaj Auto, Power Grid, Ultratech Cement, and State Bank of India. About 1146 shares have advanced, 2068 shares declined, and 136 shares are unchanged.only Nifty Metal, FMCG, and Financial Services witnessed buying and gained 1 percent while Nifty Media, PSU Bank, and Auto indices faced selling pressure. Volatility also surged as India VIX rose 3.6 percent to 13.45. The BSE Smallcap index lost 0.57 percent and the BSE Midcap index shed 0.18 percent.