Mumbai, April 16 -- Sonata Software Ltd, Firstsource Solutions Ltd, Ashapura Minechem Ltd and NLC India Ltd are among the other gainers in the BSE's 'A' group today, 16 April 2026.Gujarat Mineral Development Corporation Ltd surged 16.67% to Rs 726.25 at 11:44 IST. The stock was the biggest gainer in the BSE's 'A' group. On the BSE, 27.78 lakh shares were traded on the counter so far as against the average daily volumes of 3.17 lakh shares in the past one month. Sonata Software Ltd soared 13.42% to Rs 287.8. The stock was the second biggest gainer in 'A' group. On the BSE, 3.78 lakh shares were traded on the counter so far as against the average daily volumes of 41735 shares in the past one month. Firstsource Solutions Ltd spiked 11.96% to...