Find the latest IPO GMP, kostak, and subject to rates for mainboard and SME IPOs in India. Learn about the grey market , its risks, and how to participate in IPO discussions. Track Grey Market Premium (GMP) for all IPOs . Get real-time GMP updates, estimated listing prices, and fire ratings for informed investment decisions. Check the latest Grey Market Premium (GMP) for Lenskart Solutions IPO . Stay updated with live price trends and market demand. IPO GMP or grey market premium is the price at which an IPO is bought and sold in the grey market before its IPO listing. GMP PRICE is calculated based on the performance of the company, its demand in the grey market and the subscription of the IPO.