Earlier, the short listed bidders were asked to submit their final bids by February, 25 before 11AM which has now been pre-poned to February 22, 2014 by 11AM, the company said in a release.
IDBI and four other institutions which hold 45% stake in the company plans to sell 11.13 million shares.
The stock opened at Rs 852.30 on the BSE and touched an intra-day high of Rs 873. Over 222,000 shares were traded on both the stock exchanges so far.