Educomp Solutions spurted 16.15% to Rs 1782.80 after the company on 21 January 2009 filed a complaint with Economic Offence Wing of Delhi police against alleged reports that the company's accounts have been fudged to boost share price. It topped the gainers in the BSE's A group.

Divi's Laboratories surged 7.58% to Rs 988.05 ahead of its Q3 December 2008 results on 24 January 2009. It was the second biggest gainer in A group.

Bharti Airtel soared 6.19% to Rs 619.70 after the company reported 42.08% surge in net profit to Rs 2017.29 crore on 32.44% increase in total income to Rs 8850.25 crore in Q3 December 2008 over Q3 December 2007. The company announced the results before trading hours today, 22 January 2009. It was the third biggest gainer in A group.

National Aluminium Company jumped 5.52% to Rs 193.90. It was the fourth biggest gainer in A group. The company will announce Q3 December 2008 results on 28 January 2009.

Power Grid Corporation of India gained 4.75% to Rs 84.95. It was the fifth biggest gainer in A group. The company will announce Q3 December 2008 results on 28 January 2009.