Cello World made a strong stock market debut on Monday, with its shares getting listed at Rs 831, a 28 per cent premium over its issue price of Rs 648 per share on the BSE. On the National Stock Exchange (NSE), the stock of the houseware company opened at Rs 829. Post listing, the share price of Cello World hit a high of Rs 837.40 and a low of Rs 790 on the NSE. At 10:01 AM, it was trading at Rs 803.65, 3 per cent lower from its opening level. A combined 7.3 million equity shares have, so far, changed hands on the NSE and BSE.