Mumbai, March 28 -- NIIT Learning Systems Ltd, Procter & Gamble Hygiene and Health Care Ltd, Aster DM Healthcare Ltd and Authum Investment & Infrastructure Ltd are among the other gainers in the BSE's 'A' group today, 28 March 2025.Fortis Healthcare Ltd surged 6.92% to Rs 717.25 at 11:48 IST. The stock was the biggest gainer in the BSE's 'A' group. On the BSE, 49877 shares were traded on the counter so far as against the average daily volumes of 29303 shares in the past one month. NIIT Learning Systems Ltd soared 6.12% to Rs 418.2. The stock was the second biggest gainer in 'A' group. On the BSE, 3701 shares were traded on the counter so far as against the average daily volumes of 2583 shares in the past one month. Procter & Gamble Hygien...