https://www.greymarket.net/article/what-is-ipo-grey-market-premium-gmp/ 2026-09-20T08:04:20+05:30 weekly 0.8 https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?w=800&auto=format&fit=crop&q=80 What is IPO Grey Market Premium (GMP) and How Does It Work?