Mumbai, June 4 -- Mahalaxmi Rubtech Ltd, Haleos Labs Limited, Shah Metacorp Ltd and Umiya Buildcon Ltd are among the other losers in the BSE's 'B' group today, 04 June 2026.Thacker & Company Ltd crashed 8.64% to Rs 1445 at 14:30 IST.The stock was the biggest loser in the BSE's 'B' group.On the BSE, 745 shares were traded on the counter so far as against the average daily volumes of 202 shares in the past one month.Mahalaxmi Rubtech Ltd tumbled 7.38% to Rs 180.6. The stock was the second biggest loser in 'B' group.On the BSE, 111 shares were traded on the counter so far as against the average daily volumes of 1978 shares in the past one month.Haleos Labs Limited lost 7.28% to Rs 1400.05. The stock was the third biggest loser in 'B' group.O...