New Delhi: The Rs 88.51 crore initial public offering (IPO) of Leapfrog Engineering Services opens for subscription on Wednesday and closes on June 19. The shares are proposed to be listed on the BSE SME platform on June 24. Ahead of the issue opening, the grey market premium (GMP) was at zero, indicating no expected listing gains based on unofficial market trends. The Bengaluru-based engineering, procurement, construction and commissioning (EPCC) company has fixed a price band of Rs 21-23 per s