Shares of two-wheeler accessories giant Studds Accessories made a weak debut on D-Street on Friday, listing at Rs 565 (down 3.4%) on the NSE against an issue price of Rs 585. On the BSE, the stock opened at Rs 570 (down 2.6%), despite a blockbuster IPO that saw strong demand across investor categories. The company, India’s largest helmet manufacturer, raised Rs 455 crore through a pure OFS of 77.9 lakh shares.