In fact, Huatai Securities issued an announcement on February 7 last year at 65438 to adjust the margin ratio of the two companies. At that time, the margin ratio of the two companies was raised from 60% to 65%. At present, at least CITIC and Huatai have increased their margin ratio to 70%. Under the demonstration effect of big brokers, it is not excluded that more brokers will gradually increase the margin ratio of the two businesses.