On May 12, 2026, Butterfly Gandhimathi Appliances Ltd led the gains in the Bombay Stock Exchange's 'B' group, soaring 13.29% to ₹704.5 at 12:02 IST. This marked a significant increase in trading activity, with 1.42 lakh shares exchanged compared to an average of 1232 shares over the past month. Following closely, Central Mine Planning & Design Institute Ltd experienced a 9.90% rise to ₹236, with 13.28 lakh shares traded, significantly above its average of 3.68 lakh shares. Sasken Technologies Ltd also saw a notable increase of 9.83% to ₹1795, while Satin Creditcare Network Ltd and Jindal Drilling & Industries Ltd gained 9.57% to ₹235.35 and 9.55% to ₹583.35, respectively. The overall trading volume for these stocks indicates a robust interest from investors in the 'B' group.