Client Notices
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The client notices have been distributed with all enclosures by e-mail to related Clients. For enquiry please contact HKEX-IS by emailing to hkex-is@hkex.com.hk

Y = Applicable

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Date Ref No. Subject Securities Market Data Derivatives Market Data Issuer News
OMD-C OMD-D D-LITE IIS
26/06/2019 MDD/19/690 Operating System Upgrade and Discontinuation of Disseminating Estimated Average Settlement Price message on HKEX Orion Market Data Platform - Derivatives Market (OMD-D)
Enclosure 1 : OMD-D Interface Specifications (v1.27)
Enclosure 2 : OMD-D Developers Guide (v1.19)

Y

Y

21/06/2019 MDD/19/677 Revision of Stock Code Allocation Plan
Enclosure 1 : Stock Code Allocation Plan

Y

19/06/2019 MDD/19/673 Introduction of Inline Warrant on HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH)
Enclosure 1 : OMD-C Interface Specification v1.27
Enclosure 2 : OMD-C MMDH Interface Specification v1.25

Y

11/06/2019 MDD/19/644 Index Information Supplied by China Securities Index Company Limited
Enclosure 1 : Letter on Index Information Supplied by CSIC
Enclosure 2 : Guiding Note on Index Information supplied by CSIC

Y

Y

Y

31/05/2019 MDD/19/615 Revision of Stock Code Allocation Plan
Enclosure 1 : Stock Code Allocation Plan

Y

31/05/2019 MDD/19/624 HKATS and DCASS Upgrade Post Launch Arrangement

Y

29/05/2019 MDD/19/605 Capital Adjustment of Henderson Land Development Co. Ltd. Stock Futures and Options Contracts - Bonus Issue
Enclosure 1 : Final strike information

Y

Y

29/05/2019 MDD/19/604 Capital Adjustment of The Hong Kong and China Gas Company Ltd. Stock Futures and Options Contracts - Bonus Issue
Enclosure 1 : Final strike information

Y

Y

29/05/2019 MDD/19/602 OMD-D Arrangement for the Trading Discontinuation of 4 Sector Index Futures
Enclosure 1 : Participant Circular

Y

Y

29/05/2019 MDD/19/595 Introduction of HKEX Gold Futures Indices

Y

Y

Y

21/05/2019 MDD/19/287 Introduction of New Indices and Change of Operation Window on HKEX Orion Market Data Platform - Securities Market (OMD-C) and Index Datafeed Products
Enclosure 1 : Participant Circular
Enclosure 2 : CESC Announcement
Enclosure 3 : OMD-C Interface Specifications
Enclosure 4 : OMD-C MMDH Interface Specifications

Y

Y

Y

20/05/2019 MDD/19/568 Arrangement of OMD-D for the Rollout of the T+1 Session Trading Hours Extension from 1:00 a.m. to 3:00 a.m.
Enclosure 1 : Participant Circular
Enclosure 2 : OMD-D Interface Specifications v1.26
Enclosure 3 : OMD-D Developers Guide v1.18

Y

Y

17/05/2019 MDD/19/567 Revision of Stock Code Allocation Plan
Enclosure 1 : Stock Code Allocation Plan

Y

17/05/2019 MDD/19/493 1) End of Stabilization Period for HKATS and DCASS Upgrade; and 2) Updates on OMD-D Technical Documents, Web Corner and Readiness Test Environment
Enclosure 1 : OMD-D Interface Specifications v1.25
Enclosure 2 : OMD-D Developers Guide v1.17
Enclosure 3 : OMD-D Connectivity Guide v1.12

Y

Y

15/05/2019 MDD/19/492 Arrangements upon issuance of Typhoon and/or Rainstorm warning signal

Y

Y

Y

Y

10/05/2019 MDD/19/514 Updates on Connectivity Guide of HKEX Orion Market Data Platform - Securities Market (OMD-C)
Enclosure 1 : OMD-C Connectivity Guide v.2.2

Y

29/04/2019 MDD/19/496 After-Hours Trading Arrangement on 27 May 2019
Enclosure 1 : Participant Circulars

Y

Y

12/04/2019 MDD/19/445 Changes to IIS on Unifying Character Encoding and Strengthening Password Requirement
Enclosure 1 : IIS Transmission Specification (v3.6)
Enclosure 2 : IIS Transmission Specification (News Headlinev2.3)
Enclosure 3 : IIS Canned Data

Y

10/04/2019 MDD/19/401 Rollout of Changes to D-Lite for HKATS and DCASS Upgrade on 6 May 2019
Enclosure 1 : Information Package of Rollout of Changes to OMD-D
Enclosure 2 : Participant Circular

Y

10/04/2019 MDD/19/400 Rollout of Phase 2 Change to OMD-D for HKATS and DCASS Upgrade on 6 May 2019
Enclosure 1 : Information Package of Rollout of Changes to OMD-D
Enclosure 2 : Participant Circulars

Y

02/04/2019 MDD/19/403 Changes to Quote Meter Audit Report Submission Requirements

Y

Y

25/03/2019 MDD/19/364 Capital Adjustment of Henderson Land Development Co. Ltd. Stock Futures and Options Contracts - Bonus Issue
Enclosure 1 : Participant Circulars

Y

Y

25/03/2019 MDD/19/356 Capital Adjustment of The Hong Kong and China Gas Company Ltd. Stock Futures and Options Contracts - Bonus Issue
Enclosure 1 : Participant Circulars

Y

Y

18/03/2019 MDD/19/342 Reminder for System and Operational Readiness for Extension of T+1 Session to 3:00 a.m.
Enclosure 1 : Participant Circulars

Y

Y

08/02/2019 MDD/19/201 (1) Updated OMD Operation Calendar and Index Feed Calendar 2019 and (2) General Guidelines for Handling Data Disseminated on Non-production Days
Enclosure 1 : Updated OMD Operation Calendar 2019
Enclosure 2 : Updated 2019 Index Feed Calendar
Enclosure 3 : General Guidelines

Y

Y

Y

Y

04/02/2019 MDD/19/195 Market Rehearsals for Changes to D-Lite for HKATS and DCASS Upgrade
Enclosure 1 : Test Rundown
Enclosure 2 : Guidelines on Rollout & Fallback Arrangement
Enclosure 3 : Participant Circulars

Y

04/02/2019 MDD/19/194 Market Rehearsals for Phase 2 Change to OMD-D for HKATS and DCASS Upgrade
Enclosure 1 : Test Rundown
Enclosure 2 : Guidelines on Rollout & Fallback Arrangement
Enclosure 3 : Participant Circulars

Y

01/02/2019 MDD/19/157 System and Operational Readiness for Extension of T+1 Session to 3:00 a.m.
Enclosure 1 : Participant Circular

Y

Y

01/02/2019 MDD/19/139 Change of Headline Categories
Enclosure 1 : IIS Specification version 3.5
Enclosure 2 : IIS Specification (News Headline)version 2.2

Y

18/01/2019 MDD/19/080 Briefing Session for Market Rehearsal of HKATS and DCASS Upgrade
Enclosure 1 : Participant Circular

Y

18/01/2019 MDD/19/076 Briefing Session for Market Rehearsal of HKATS and DCASS Upgrade
Enclosure 1 : Participant Circular

Y

OMD-C = Orion Market Data Platform - Securities Market
OMD-D = Orion Market Data Platform - Derivatives Market
D-LITE = Derivatives Lite Datafeed
IIS = Issuer Information feed Service