The stock of Harshdeep Hortico made an impressive debut, listing at a 55 percent premium over the IPO price, on February 5. The stock opened at Rs 70 against an issue price of Rs 45 on the BSE SME platform. Ahead of the listing, Harshdeep Hortico shares were trading at a 70 percent premium in the grey market, which is an unofficial ecosystem where shares start trading before the allotment.