The grey market premium (GMP) of Syrma SGS Technology initial public offer (IPO) has risen 28 per cent in a day. The GMP, which stood at Rs 35 on August 18 rose to Rs 45 today, according to IPOWatch. That translates into a rise of Rs 10 or 28 per cent in the GMP of the public issue, which closed on August 18. The grey market premium (GMP) of the share sale stands at Rs 45 today, which implies that the stock is expected to list at Rs 265.