During the intra-day trade, shares of the company rose as much as 13%, the most since its listing in April 2004.
"Stock has run up on speculation that company will make “some positive” data announcement related to oral insulin drug it is developing, KR Choksey Shares, analyst, Hitesh Mahida said to Bloomberg in phone interview.
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Shares of the company closed at Rs 496.1, up Rs 41.50, or 9.13% on BSE.
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