On February 9, 2023, the CSRC issued a reply on the qualifications of five companies, including Castle Securities China Co., Ltd., and approved Ruifeng Securities Co., Ltd., Mu Kai Private Company Limited, Castle Securities China Co., Ltd., InterPeck Financial Investment Consulting Co., Ltd. and Ivy Asset Management (Hong Kong) Co., Ltd. as qualified foreign investors.

Citadel is an American hedge fund company headquartered in Miami, USA, founded by KennethC C. Griffin is at 1990. By the end of June 2023 1, the assets under management of Citadel reached 54.5 billion US dollars.