HKEX sets 19 November deadline before 21 November trading-system failover rehearsal

Hong Kong brokers have a near-term operational deadline that is more actionable than another generic warning about cyber risk. A Stock Exchange of Hong Kong circular dated 30 October sets a rehearsal of the OTP-C and OTP-CSC trading-system data-centre failover arrangements for Saturday, 21 November 2026, from 11:00 a.m. to 3:10 p.m. local time. Exchange participants are required to submit the participation notification through the Exchange's Electronic Communication Platform by 19 November. They must also complete the evaluation form between 23 and 25 November after the exercise.[1][2]

The scenario is a simulated service outage at the primary data centre, followed by restoration of relevant trading services at the secondary site. That makes it a practical test of order access, trading terminal behaviour, datafeeds and staff procedures rather than a scheduled live market shutdown. Participants relying on outside price-feed vendors are instructed to liaise with those providers so screens have adequate data during the rehearsal. Testing only the matching engine while ignoring the trading desk's data and communications would leave an obvious continuity gap.[1][2]

A related SFC circular addresses Hong Kong's investor identification framework. Relevant regulated intermediaries are reminded about the BCAN-CID mapping and reporting processes; BCAN tagging for order submission is relevant specifically to firms that are exchange participants. The SFC account draws an important participation distinction: exchange participants must file the named notification and evaluation forms, while non-exchange-participant intermediaries do not have the same enrolment requirement. A universal claim that every licensed intermediary must submit every rehearsal form would be misleading.[1][2]

How the change affects market participants

Operational resilience has a chain of dependencies. A broker might successfully reconnect to a backup trading environment and still fail to submit a tagged order, receive a stale market feed, or reconcile an order status after switchover. Good rehearsal evidence therefore covers order identifiers, session reconnection, data continuity, failover timing, exception resolution and the exact point at which staff can safely resume dealing. These are editorial deductions from the failure modes, not performance metrics promised by HKEX.[1][2]

The dates are also distinct. The 19 November notice is preparation; 21 November is the rehearsal; 23–25 November is the feedback window. The primary HKEX document establishes that timetable, but it does not state the future exercise has been successfully completed. The resulting report will become useful evidence only after the test, when exchange participants and HKEX can identify what worked and what needs remediation.[1][2]

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