Mumbai, Jan. 28 -- Hindustan Copper Ltd, Motilal Oswal Financial Services Ltd, International Gemmological Institute (India) Ltd and Oil India Ltd are among the other gainers in the BSE's 'A' group today, 28 January 2026.Sterlite Technologies Ltd soared 16.68% to Rs 100.75 at 11:46 IST. The stock was the biggest gainer in the BSE's 'A' group. On the BSE, 4.87 lakh shares were traded on the counter so far as against the average daily volumes of 76318 shares in the past one month. Hindustan Copper Ltd surged 10.96% to Rs 623.85. The stock was the second biggest gainer in 'A' group. On the BSE, 69.39 lakh shares were traded on the counter so far as against the average daily volumes of 47.3 lakh shares in the past one month. Motilal Oswal Fina...