Is Merrill Lynch Holding Group listed?

It's listed Merrill Lynch became a holding company, which changed the business model of partners in the past 50 years. 1958, Merrill Lynch became the largest securities company in the world at that time. In June, Merrill Lynch went public. Holding group refers to a company that controls a company by holding a certain number of shares. Holding groups are divided into pure holding companies and mixed holding companies according to holding methods.