Mumbai, Oct. 20 -- Tata Investment Corporation Ltd, Avantel Ltd, Subex Ltd and UTI Asset Management Company Ltd are among the other losers in the BSE's 'A' group today, 20 October 2025.Tejas Networks Ltd lost 8.51% to Rs 539.9 at 14:46 IST.The stock was the biggest loser in the BSE's 'A' group.On the BSE, 4.6 lakh shares were traded on the counter so far as against the average daily volumes of 71021 shares in the past one month.Tata Investment Corporation Ltd tumbled 8.41% to Rs 815. The stock was the second biggest loser in 'A' group.On the BSE, 12 lakh shares were traded on the counter so far as against the average daily volumes of 4.5 lakh shares in the past one month.Avantel Ltd crashed 8.19% to Rs 174.9. The stock was the third bigge...