PNGS Reva Diamond IPO GMP: What Does Grey Market Signal On Second Day Of Subscription by NDTV Profits | February 25, 2026 10:31 am | Latest Posts, Market, Trending News Grey market premium suggests a moderate listing gain for PNGS Reva IPO shares. The subscription window closes on Feb 26, with allotment by Feb 27 and refunds processed by March 2.