Mumbai, June 4 -- Ravindra Energy Ltd, Physicswallah Ltd, Kwality Walls India Ltd and MSTC Ltd are among the other gainers in the BSE's 'B' group today, 04 June 2026.Agarwal Industrial Corporation Ltd surged 19.99% to Rs 503.55 at 12:01 IST. The stock was the biggest gainer in the BSE's 'B' group. On the BSE, 1.18 lakh shares were traded on the counter so far as against the average daily volumes of 3676 shares in the past one month. Ravindra Energy Ltd spiked 17.83% to Rs 145.4. The stock was the second biggest gainer in 'B' group. On the BSE, 5.44 lakh shares were traded on the counter so far as against the average daily volumes of 21727 shares in the past one month. Physicswallah Ltd soared 15.80% to Rs 106.65. The stock was the third b...