The stock climbed 6.34 per cent to Rs 773 on BSE.
At NSE, the scrip gained 6.46 per cent to Rs 773.90.
The stock was the top gainer among the Sensex and Nifty indices during morning trade.
"One of its subsidiaries has received final approval from US FDA for its Abbreviated New Drug Application (ANDA) for generic version of Gleevec, Imatinib Mesylate tablets," Sun Pharmaceutical said in a BSE filing.
In the broader market, the benchmark BSE Sensex was trading lower by 186.44 points at 25,693.99 during afternoon session.
