Group 1 - Hong Kong Stock Exchange (HKEX) announced optimization of collateral arrangements for its securities and derivatives clearing houses to enhance market efficiency and reduce costs for participants [1] - The interest calculation method for cash collateral will be adjusted to align with international market standards, calculated daily as the overnight reference rate minus fees [1] - The financing cost for non-cash collateral will be reduced from 0.5% per annum to 0.25% [1] Group 2 - The new arrangements will be uniformly adopted by the Central Clearing and Settlement System, Hong Kong Futures Clearing Corporation, and Hong Kong Stock Options Clearing Limited, applicable to all accepted currencies [1] - The fee for the period from October 2025 to December 2026 will be set at 0.8%, decreasing by 10 basis points annually until it reaches 0.5% by the end of 2028 [1] - The new policies have been approved by the Hong Kong Securities and Futures Commission and will take effect on October 2, 2025 [1] Group 3 - HKEX's Chief Operating Officer emphasized the commitment to enhancing the vitality, resilience, and competitiveness of the Hong Kong market through these new arrangements [2] - The measures aim to improve the efficiency of collateral usage, facilitating participants in executing various trading strategies and managing investment risks [2] - Recent initiatives to increase position limits for stock options and index derivatives have significantly enhanced the capital efficiency of settled positions [2]