Nifty Smallcap 100 index surged over 2%, extending its two-day rally to 3.5% after a whopping seven-session decline. The index fell nearly 10% during the seven-session fall. The gains on the index were led by Ola Electric, Sona Comstar, Onesource Specialty Pharma, which climbed 11.76%, 9.66% and 8.34%, respectively. Ather Energy, Welspun Corp and Data Patterns were the other gainers by rising 7.38%, 6% and 5.8%< respectively.