Mumbai, May 19 -- HEG Ltd, Delhivery Ltd, Alembic Pharmaceuticals Ltd, Usha Martin Ltd are among the other stocks to see a surge in volumes on NSE today, 19 May 2025.Graphite India Ltd registered volume of 158.27 lakh shares by 14:14 IST on NSE, a 28.22 fold spurt over two-week average daily volume of 5.61 lakh shares. The stock rose 14.86% to Rs.558.70. Volumes stood at 4.22 lakh shares in the last session.HEG Ltd notched up volume of 120.97 lakh shares by 14:14 IST on NSE, a 15.32 fold spurt over two-week average daily volume of 7.90 lakh shares. The stock rose 6.91% to Rs.524.50. Volumes stood at 7.17 lakh shares in the last session.Delhivery Ltd witnessed volume of 391.26 lakh shares by 14:14 IST on NSE, a 12.53 times surge over two-w...