Mumbai, Dec. 17 -- Thangamayil Jewellery Ltd, Reliance Power Ltd, Patel Engineering Ltd and TD Power Systems Ltd are among the other gainers in the BSE's 'A' group today, 17 December 2025.Indraprastha Gas Ltd soared 6.66% to Rs 195.4 at 11:46 IST. The stock was the biggest gainer in the BSE's 'A' group. On the BSE, 9.6 lakh shares were traded on the counter so far as against the average daily volumes of 1.12 lakh shares in the past one month. Thangamayil Jewellery Ltd surged 5.27% to Rs 3389.25. The stock was the second biggest gainer in 'A' group. On the BSE, 20807 shares were traded on the counter so far as against the average daily volumes of 9250 shares in the past one month. Reliance Power Ltd spiked 5.05% to Rs 36.42. The stock was ...