Hong Kong Exchanges and Clearing Limited's (HKEx) technically revamped AMS/3 (Third Generation Automatic Order Matching and Execution System) ran smoothly on its first day of operation today (Monday).

As a result of the technical revamp, which is also known as AMS/3.5, the order processing capacity of AMS/3 has been doubled to 3,000 orders per second and the average end-to-end system response time* halved to 0.15 second.  The revamped securities trading system supports 21.6 million orders and 7.5 million trades in a standard four-hour trading day (10 am to 12:30 pm and 2:30 pm to 4:00 pm).  AMS/3 processed about 6.5 million orders and 900,000 trades a day over the previous two weeks.

As a prudent measure, a two-week stabilisation period began today with the rollout of the revamped securities trading system.  During the stabilisation period, special fallback arrangements are in place in the unlikely event that there is an incident that requires fallback to the previous version of AMS/3.

"We would like to thank Participants, information vendors and our staff for their full support, which was crucial to the successful rollout of the technically revamped AMS/3 today.  Today's rollout would not have been possible without their hard work, help and cooperation during the market rehearsals completed last year and our other preparations," said HKEx Chief Executive Charles Li. 

"The AMS/3 technical revamp demonstrates our commitment to providing efficient market infrastructure that meets the needs of our market participants and further strengthens the competitiveness of our markets," Mr Li added.