From the 30-share blue-chip pack, Bharti Airtel, Power Grid, Bajaj Finance, Nestle, Mahindra & Mahindra, Reliance Industries, Asian Paints, IndusInd Bank, Hindustan Unilever and HDFC Bank were the biggest gainers.Bajaj Finance climbed nearly 2 per cent after the company reported an 18 per cent increase in its consolidated net profit to Rs 4,308 crore for the December quarter.