Cipla ended at Rs 317, lower by Rs 1 or 0.5%, on the BSE.
The stock had opened at Rs 315, and touched a high of Rs 322 and a low of Rs 304 during the day.
The counter saw trades of 4.25 lakh shares as against the two-week average of 2.64 lakh shares.
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(Updated at 1046am)
Cipla has slipped despite an increase in net profit.
The stock is now trading at Rs 315, down 1% from its previous close. The counter has clocked volumes of 0.32 lakh shares on the BSE.
The company posted a 29% rise in net profit to Rs 289 crore for the quarter ended December 31, 2009.
Total sales of the company during the reporting period also increased marginally, up 6 per cent to Rs 1,358 crore from Rs 1,280 crore earlier year.