FIFA, June 1 (FAP)-since the beginning of this year, many securities firms have been actively "buying" in the Dingzeng market while participating in secondary market transactions. As of May 31, a total of 16 brokerages have subscribed for additional shares of 33 listed companies at a cost of more than 13.5 billion yuan. From the industry point of view, securities firms are more willing to participate in the fixed growth of companies in the technology growth industry; from the income point of view, nearly 80% of the listed companies have brought buoyancy for securities firms to participate in fixed growth. (China Securities News)