China Securities Depository and Clearing Corporation (CSDC) sent an urgent document to the securities brokerage firm.

Reporters learned that China Securities Depository and Clearing Corporation Limited (CSDC) sent an urgent notice to securities firms, titled "Notice regarding the signing of the special risk disclosure statement for stock investment in enterprises listed on the Science and Technology Innovation Board and other related matters." The notice stated that starting from September 22, 2025, investors who have signed the risk disclosure statement for the Science and Technology Innovation Board should have their securities accounts labelled with category C, while those who have not signed should be labelled with category K. It is reported that starting yesterday, some securities firm apps have launched the corresponding function for investors to sign the risk disclosure statement online and activate trading privileges for the Science and Technology Innovation Board.