On May 13, 2026, Cubex Tubings Ltd emerged as the top gainer in the Bombay Stock Exchange's 'B' group, with its stock price increasing by 13.97% to reach ₹108.19. The trading volume for Cubex Tubings was 25,969 shares, significantly higher than its average daily volume of 12,474 shares over the past month. Following closely, Mahalaxmi Fabric Mills Ltd rose 13.96% to ₹28.49, with a trading volume of 71 shares compared to an average of 318 shares. Foseco India Ltd also saw a notable increase of 12.73%, reaching ₹5,443.65, with 2,166 shares traded against an average of 122 shares. Other gainers included Naksh Precious Metals Ltd and Jindal Drilling & Industries Ltd, which gained 12.52% and 12.51%, respectively. The overall trading activity in the 'B' group indicates a positive market sentiment, with increased interest in these stocks.