Bulk brokerage \ x0d \ x0d \ ● refers to a business model in which securities companies provide packaging services for professional investors such as hedge funds. \ x0d \●“Prime Brokerage "was first put forward by Furman Selz, an American securities company, in the 1970s, which was mainly used for portfolio management and performance tracking. \x0d\● Due to the explosive growth of hedge funds in recent 20 years, PB business has developed vigorously.