<h1>Stock markets close higher despite volatility as regulator orders Rs 4,843 crore disgorgement for index manipulation</h1> Stock markets experienced high volatility before closing higher, with the BSE Sensex gaining 193.42 points to 83,432.89 and NSE Nifty rising 55.70 points to 25,461. Banking and heavyweight stocks drove the recovery after initial losses. Markets await a potential trade deal outcome as a tariff deadline approaches. The securities regulator barred a trading group and ordered disgorgement of unlawful gains worth Rs 4,843 crore for alleged index manipulation through derivatives. Foreign institutional investors sold equities worth Rs 1,481.19 crore while domestic investors bought Rs 1,333.06 crore worth of stocks.