COB 9.6.4

(1) An ATS Operator's Operating Rules must include effective systems, controls and procedures to ensure that its trading systems:

(a) are resilient;
(b) have adequate capacity to deal with peak orders and message volumes; and
(c) are able to operate in an orderly manner under conditions of market stress.

(2) Without limiting the generality of its obligations arising under (1) or any other Rule, an ATS Operator must be able under its rules, systems, controls and procedures to:

(a) reject orders that exceed its pre-determined volume and price thresholds, or are clearly erroneous;
(b) temporarily halt trading of Investments traded on its facility if there is a significant price movement in relation to those Investments on its market or a related market during a short period; and
(c) where appropriate, cancel, vary or correct any transaction.
[Added] DFSA RM123/2013 (Made 13th June 2013) [VER22/07-13]