Grey market premium signals strong demand. Market interest in the IPO appears robust, with Urban Company already commanding a notable premium in the unofficial grey market. As of 5... The grey market premium (GMP) is the price at which an IPO is traded in an unofficial/unregulated grey market prior to its listing. The GMP reflects how a particular company ’s IPO issue might react on the day of listing. Get Urban Company IPO details. Find IPO Date, Price, Live Subscription, Allotment, Grey Market Premium GMP, Listing Date, Analysis and Review. Urban Company IPO will open its bidding window for subscription on September 10th, and just days ahead of its launch, the Urban Company IPO GMP, which is the grey market premium , has jumped by 18. ...