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
20/09/2019 MDD/19/1128 Regular Site Failover Rehearsal for Market Data Systems on 19 October 2019

Y

Y

Y

Y

10/09/2019 MDD/19/1071 Practice Session for Closing Auction Session Expansion
Enclosure 1 : Participant Circulars

Y

06/09/2019 MDD/19/1065 Technical Refresh for HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH)
Enclosure 1 : OMD-C MMDH Interface Specifications (version 1.26)
Enclosure 2 : OMD-C MMDH Developers Guide (version 1.8)

Y

03/09/2019 MDD/19/1051 Introduction of Indian Rupee Currency Futures Contracts
Enclosure 1 : Participant Circulars
Enclosure 2 : Vendor Access Codes Confirmation Form

Y

Y

21/08/2019 MDD/19/953 Introduction of Weekly Hang Seng Index Options and Weekly Hang Seng China Enterprises Index Options Contracts
Enclosure 1 : Participant Circulars

Y

Y

20/08/2019 MDD/19/925 Post Release Test for Operating System Upgrade and Discontinuation of Disseminating Stock Estimated Average Settlement Price message on HKEX Orion Market Data Platform - Derivatives Market (OMD-D)

Y

Y

08/08/2019 MDD/19/916 Handout for Market Data Information Day on 7 August 2019 (Wednesday)
Enclosure 1 : Presentation foils for Market Data Information Day

Y

Y

Y

08/08/2019 MDD/19/915 OMD-D Arrangement for the Introduction of Weekly Hang Seng Index Options and Weekly Hang Seng China Enterprises Index Options Contracts
Enclosure 1 : Participant Circulars
Enclosure 2 : Vendor Access Codes Confirmation Form

Y

Y

02/08/2019 MDD/19/896 End-to-End Test and Practice Sessions for Closing Auction Session Expansion
Enclosure 1 : Participant Circulars

Y

Y

24/07/2019 MDD/19/878 Updates on Operating System Upgrade and Discontinuation of Disseminating Estimated Average Settlement Price message on HKEX Orion Market Data Platform - Derivatives Market (OMD-D)

Y

Y

19/07/2019 MDD/19/846 Market Data Information Day on 7 August 2019 (Wednesday)

Y

Y

Y

Y

12/07/2019 MDD/19/845 Trading Arrangements in the event of 'Extreme Conditions' announced by the Government after Super Typhoons
Enclosure 1 : Participant Circulars

Y

Y

Y

Y

09/07/2019 MDD/19/732 Incorrect Index Values of HKEX USD Gold Futures - Spot Price Index and HKEX CNH Gold Futures - Spot Price Index on 5 July 2019 (Friday)
Enclosure 1 : Corrected Index Values of HKGDUSP and HKGDRSP

Y

Y

Y

09/07/2019 MDD/19/731 Arrangement on HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) for cancellation of Inline Warrants Trades executed above 1 HKD
Enclosure 1 : Participant Circular (English version)

Y

08/07/2019 MDD/19/728 OMD-D Arrangement for the Introduction of the USD-denominated London Metal Mini Futures
Enclosure 1 : Participant Circulars
Enclosure 2 : Vendor Access Codes Confirmation Form
Enclosure 3 : OMD-D Interface Specifications (version 1.28)

Y

Y

05/07/2019 MDD/19/707 Closing Auction Session Expansion
Enclosure 1 : Participant Circular

Y

05/07/2019 MDD/19/718 HGC Global Communications Limited ceases to be Securities and Derivatives Network Accredited Vendor effective on 1 May 2020

Y

Y

Y

Y

02/07/2019 MDD/19/684 Post Release Test for Changes to IIS on Unifying Character Encoding and Strengthening Password Requirement on 13 July 2019
Enclosure 1 : IIS Transmission Specification (v3.7)
Enclosure 2 : IIS Transmission Specification(News Headline-v2.4)

Y

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 v1.26
Enclosure 4 : OMD-C MMDH Interface Specifications v1.24

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