Mumbai, Feb. 20 -- Steel Authority of India Ltd gained 0.74% today to trade at Rs 156.95. The BSE Metal index is up 0.25% to quote at 39156.76. The index is up 3.83 % over last one month. Among the other constituents of the index, Lloyds Metals & Energy Ltd increased 0.57% and APL Apollo Tubes Ltd added 0.55% on the day. The BSE Metal index went up 35.76 % over last one year compared to the 8.63% surge in benchmark SENSEX. Steel Authority of India Ltd has added 7.28% over last one month compared to 3.83% gain in BSE Metal index and 0.44% rise in the SENSEX. On the BSE, 10426 shares were traded in the counter so far compared with average daily volumes of 16.89 lakh shares in the past one month. The stock hit a record high of Rs 162.95 on 1...