CCASS online services will be suspended on the following Saturdays for internal system testing and upgrades: 10 Aug, 17 Aug, 24 Aug, and 31 Aug 2024. Production reports for these dates will be available on the following Mondays. Participants should inform their IT support or BOS vendors to prepare accordingly
Resources: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Circulars-and-Notices/Participant-and-Members-Circulars/HKSCC/2024/ce_HKSCC_SET_031_2024.pdf