HD Fire Protect is set to debut on the BSE and NSE on October 21, with a grey market premium of around 26%, signalling expectations of strong listing gains. The Rs 712 crore IPO was priced at Rs 271 per share and comprised entirely an offer for sale (OFS) of 2.63 crore shares by promoters Harish Narshi Dharamshi and Kusum Harish Dharamshi. Since it was an OFS, the company will receive no proceeds from the issue.