HKEX's Phase 1 optimization of client margin multipliers will be implemented on September 21.

Zhito Finance App has learned that the Hong Kong Stock Exchange (HKEX) stated in a post on September 18 that since the beginning of this year, the derivatives market of Hong Kong Exchanges and Clearing Limited has continued to maintain its growth momentum, with the average daily trading volume of futures and options contracts in the first eight months rising 5% year-on-year. To support market development and further enhance the capital efficiency of market participants, HKEX will lower the minimum client basic margin requirements for its derivatives and stock options markets. The first phase of the Client Margin Multiplier (CMM) optimization measures will take effect next Monday (September 21, 2026). The second phase is planned to be implemented in March 2027, subject to regulatory approval.