The month of September is set to be the busiest month for IPOs in both mainboard and SME segments in the last 14 years, with over 28 companies entering the market so far, said the Reserve Bank's latest Bulletin released on Friday. Financial markets are undergoing shifts, said the article on the state of economy published in the RBI's September Bulletin. "In the primary equity market, there is a surge of interest in small and medium enterprises (SMEs) initial public offerings (IPOs), including from domestic mutual funds, with massive oversubscriptions," it said. Citing a study by market regulator SEBI, the article further said 54 per cent of IPO shares allotted to investors were sold within a week of listing. "September is set to be the busiest month for IPOs... in 14 years," the article said, adding that over 28 companies entered the market so far in both mainboard and SME platforms. The article said resource mobilisation through initial public offerings (IPOs) has remained robust