Sai Life Sciences shares debuted on the exchanges on Wednesday with an 18% premium (Rs 101) at Rs 650 on the NSE. On the BSE, the stock listed with a 16.8% premium (Rs 92.1) at Rs 641.1. Ahead of the listing, the company's shares were trading at a GMP of Rs 72 in the unlisted market. The IPO received decent demand from all sets of investor’s especially from institutional investors, while retail and NII remained less interested due to expensive valuations along with high portions of OFS in the offer.