The SFC's action against the trader highlights its efforts to clamp down on market manipulation. In March 2019, nine Hong Kong brokerages got restriction notices over suspected market manipulation of China Ding Yi Feng shares. The nine brokers are: Futu Securities International (Hong Kong) Limited, GF Securities (Hong Kong) Brokerage Limited, Guotai Junan Securities (Hong Kong) Limited, Haitong International Securities Company Limited, Orient Securities (Hong Kong) Limited, SBI China Capital Financial Services Limited, Shenwan Hongyuan Securities (H.K.) Limited, Sun Hung Kai Investment Services Limited, and Yunfeng Securities Limited. The SFC is not investigating these nine brokers, which have cooperated with the regulator in its ongoing investigation. The restriction notices do not affect their operations or their other clients.