Pharma sector stocks Ranbaxy Labs and Lupin made rapid strides during the trading day to emerge the top gainers on the NSE by close on Friday.

At 3.20 p.m. Ranbaxy Labs was trading at Rs 480.20 as against Rs 462.55 at close on Thursday, representing a gain of 3.82 per cent.

Lupin surged 2.76 per cent to quote at Rs 931 as against Rs 906 at close yesterday.

IT sector stocks, TCS and Infosys maintained their firm undertone to trade up 2.49 per cent and 2.45 per cent respectively.

While TCS was quoting at Rs 2,221.05 as against its overnight close of Rs 2,167. Infosys was quoting at Rs 3,565.90 as against Thursday's close of Rs 3,480.55.

Extending its firm run on the bourses, Maruti Suzuki gained 1.62 per cent to trade at Rs 1,797 as against Rs 1,768.40 at close yesterday.