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 Information Services Limited ("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 Stock Connect Market Data
OMD-C OMD-D D-LITE IIS OMD-CC
28/11/2022 MDD/22/797 End of Stabilization Period for the launch of the Introduction of News Subtypes to Headline Message in Issuer Information feed Service (IIS)

Y

25/11/2022 MDD/22/804 Final Strike Information for Hang Seng TECH Index Futures Options Available for Trading on 28 November 2022
Enclosure 1 : Final strike information

Y

Y

22/11/2022 MDD/22/788 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Tencent Holdings Ltd. Stock Futures and Options Contracts - Special Interim Dividend
Enclosure 1 : Participant Circulars (English)

Y

Y

22/11/2022 MDD/22/790 Updates on Introduction of Hang Seng TECH Index Futures Options and Enhancements to Hang Seng TECH Index Futures and Hang Seng TECH Index Options
Enclosure 1 : Participant Circular (English)

Y

Y

18/11/2022 MDD/22/786 Updates on Post Release Test for Network Upgrade for Mainland Market Data Hub (MMDH)

Y

07/11/2022 MDD/22/731 Arrangement for the Implementation of Compression Mechanism on HKEX Orion Market Data Platform - Derivatives Market (OMD-D) D-Lite Datafeed

Y

Y

07/11/2022 MDD/22/754 Reminder on the Effective Date for Change of Trading Hours for Selected MSCI & Currency Futures and Options contracts
Enclosure 1 : Participant Circular (English)

Y

Y

04/11/2022 MDD/22/744 Post Release Tests for Network Upgrade for Mainland Market Data Hub (MMDH)
Enclosure 1 : Rundown of the Post Release Test Phase 1

Y

01/11/2022 MDD/22/738 Arrangement for the launch of the Introduction of News Subtypes to Headline Message in Issuer Information feed Service (IIS)

Y

31/10/2022 MDD/22/734 Resumption of Volatility Control Mechanism ('VCM') for Hang Seng Index Futures Products in Derivatives Market
Enclosure 1 : Participant Circular (English)

Y

Y

Y

26/10/2022 MDD/22/728 Update of Temporary Suspension of Volatility Control Mechanism (VCM) for Hang Seng
Enclosure 1 : Participant Circular (English)

Y

Y

Y

26/10/2022 MDD/22/724 Temporary Suspension of Volatility Control Mechanism ('VCM') for Hang Seng Index Futures Products in Derivatives Market
Enclosure 1 : Participant Circular (English)

Y

Y

Y

25/10/2022 MDD/22/719 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Introduction of Hang Seng TECH Index Futures Options and Enhancements to Hang Seng TECH Index Futures and Hang Seng TECH Index Options
Enclosure 1 : OMD-D Interface Specifications (version 1.42)
Enclosure 2 : Vendor Access Code Confirmation Form
Enclosure 3 : Participant Circular (English)

Y

Y

21/10/2022 MDD/22/717 Updates on Change of Trading Hours for Selected MSCI & Currency Futures and Options Contracts
Enclosure 1 : Participant Circular (English)

Y

Y

14/10/2022 MDD/22/702 Mainland Market Data Hub (MMDH) Data Centre Failover Drill on 12 November 2022

Y

13/10/2022 MDD/22/698 Implementation of Compression Mechanism on HKEX Orion Market Data Platform - Derivatives Market (OMD-D) DS (SOM) Datafeed

Y

Y

30/09/2022 MDD/22/646 Market Rehearsal for the Introduction of News Subtypes to Headline Message in Issuer Information feed Service ('IIS')
Enclosure 1 : IIS Transmission Spec. v3.18
Enclosure 2 : IIS Transmission Spec. (News Headline) v2.15

Y

29/09/2022 MDD/22/663 Final strike information for The Bank of East Asia, Limited Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information

Y

Y

23/09/2022 MDD/22/645 Market Rehearsals for Increase of Time Precision of Trade Time Field in HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH)
Enclosure 1 : Participant Circular (English)

Y

22/09/2022 MDD/22/649 Arrangement of HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Change of Trading Hours for MSCI Vietnam (USD) Index Futures Contracts on Last Trading Day
Enclosure 1 : Participant Circular (English)

Y

Y

14/09/2022 MDD/22/588 Market Rehearsals for Compression Mechanism on HKEX Orion Market Data Platform - Derivatives Market (OMD-D) D-Lite Datafeed

Y

Y

13/09/2022 MDD/22/603 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of The Bank of East Asia, Limited Stock Futures and Options Contracts - Special Dividend
Enclosure 1 : Participant Circulars (English)

Y

Y

09/09/2022 MDD/22/598 Trading Calendar Enhancement for Stock Connect - Webinar
Enclosure 1 : Participant Circular (English)

Y

02/09/2022 MDD/22/553 Arrangement of HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Change of Trading Hours for Selected MSCI & Currency Futures and Options Contracts
Enclosure 1 : List of Late Close Contracts
Enclosure 2 : Participant Circular (English)

Y

Y

24/08/2022 MDD/22/565 Final strike information for Want Want China Holdings Ltd. Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information

Y

Y

24/08/2022 MDD/22/564 Market Rehearsal for Network Upgrade for Mainland Market Data Hub (MMDH)
Enclosure 1 : Rundown of the MR

Y

17/08/2022 MDD/22/545 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Trading Discontinuation of MICEX Index Futures
Enclosure 1 : Participant Circular (English)

Y

Y

15/08/2022 MDD/22/538 Arrangement of HKEX Orion Market Data Platform China Connect (Securities) (OMD-CC) for Trading Calendar Enhancement for Stock Connect
Enclosure 1 : Participant Circular (English)

Y

11/08/2022 MDD/22/524 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Extension of Volatility Control Mechanism and Dynamic Price Banding Mechanism to Hang Seng TECH Index Futures
Enclosure 1 : Participant Circular (English)

Y

Y

29/07/2022 MDD/22/508 Regular Data Centre Failover Rehearsal for Market Data Systems on 27 August 2022
Enclosure 1 : Rundown of the Rehearsal

Y

Y

Y

Y

Y

28/07/2022 MDD/22/500 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Trading Discontinuation of 9 Equity Index Futures / Options
Enclosure 1 : Participant Circular (English)

Y

Y

14/07/2022 MDD/22/464 Updated Arrangement of End-to-End (E2E) Testing for Hong Kong Investor Identification Regime (HKIDR) and Readiness Declaration for Increase Time Precision of Trade Time Field in HKEX Orion Market Data Platform - Securities Market (OMD-C) and MMDH
Enclosure 1 : Participant circular

Y

14/07/2022 MDD/22/455 Implementation of Compression Mechanism on HKEX Orion Market Data Platform - Derivatives Market (OMD-D) D-Lite Datafeed - Provisioning of Readiness Test Environment and Readiness Declaration

Y

Y

05/07/2022 MDD/22/438 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Want Want China Holdings Ltd. Stock Options Contracts - Special Dividend
Enclosure 1 : Participant Circular (English)

Y

Y

04/07/2022 MDD/22/428 Final strike information for Yankuang Energy Group Co. Ltd Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information for Yankuang Stock Option

Y

Y

04/07/2022 MDD/22/427 Addition and Updates on Headline Categories in Issuer Information feed Service ('IIS')
Enclosure 1 : IIS Transmission Spec. v3.17
Enclosure 2 : IIS Transmission Spec. (News Headline) v2.14

Y

28/06/2022 MDD/22/420 Fixed Fee Programme for Southbound Brokers - Update

Y

28/06/2022 MDD/22/419 Launch of the Inclusion of ETFs in Stock Connect
Enclosure 1 : Participant Circular (English)

Y

27/06/2022 MDD/22/410 Introduction of News Subtypes to Headline Message in Issuer Information feed Service ('IIS')
Enclosure 1 : IIS Transmission Spec v3.16
Enclosure 2 : IIS Transmission Spec (News Headline) v2.13

Y

16/06/2022 MDD/22/383 Final strike information for Ganfeng Lithium Co., Ltd. Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information for Ganfeng Stock Options

Y

Y

13/06/2022 MDD/22/375 Updated Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Ganfeng Lithium Co., Ltd. Stock Futures and Options Contracts - Bonus Shares
Enclosure 1 : Participant Circular (English)

Y

Y

08/06/2022 MDD/22/364 Final strike information for CNOOC Limited Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information

Y

Y

07/06/2022 MDD/22/360 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Yankuang Energy Group Co. Ltd. Stock Futures and Options Contracts - Special Dividend
Enclosure 1 : Participant Circular (English)

Y

Y

07/06/2022 MDD/22/359 Launch Date for Introduction of Additional Contract Months for Hang Seng Index and Hang Seng China Enterprises Index Futures
Enclosure 1 : Participant Circular (English)

Y

Y

01/06/2022 MDD/22/346 Inclusion of Exchange-Traded Funds (ETFs) in Stock Connect - Practice Sessions, Readiness Declaration and Updated Arrangement of End-to-End Testing Session for HKEX Orion Market Data Platform China Connect (Securities) (OMD-CC)
Enclosure 1 : Participant Circulars (English)

Y

01/06/2022 MDD/22/344 Discontinuation of TR/HKEX RXY Index Information (for Application Service Providers)

Y

Y

Y

01/06/2022 MDD/22/343 Discontinuation of TR/HKEX RXY Index Information (for End-Users)

Y

Y

Y

01/06/2022 MDD/22/342 Discontinuation of TR/HKEX RXY Index Information (for Vendors)

Y

Y

Y

30/05/2022 MDD/22/337 Discontinuation of TR/HKEX RXY Indices Dissemination in OMD Index Datafeed
Enclosure 1 : OMD-C Interface Specifications (version 1.34c)
Enclosure 2 : OMD-C MMDH Interface Specifications (version 1.33c

Y

Y

Y

18/05/2022 MDD/22/326 Final strike information for JD.com, Inc. Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information

Y

Y

12/05/2022 MDD/22/301 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Ganfeng Lithium Co., Ltd. Stock Futures and Options Contracts - Bonus Shares
Enclosure 1 : Participant Circulars (English)

Y

Y

12/05/2022 MDD/22/309 Arrangement upon Issuance of Typhoon, Extreme Conditions, and/or Rainstorm Warning Signal

Y

Y

Y

Y

Y

06/05/2022 MDD/22/292 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of JD.com, Inc. Stock Futures and Options Contracts - Special Cash Dividend
Enclosure 1 : Participant Circular (English)

Y

Y

04/05/2022 MDD/22/284 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of CNOOC Limited Stock Futures and Options Contracts - Special Dividend
Enclosure 1 : Participant Circular (English)

Y

Y

28/04/2022 MDD/22/269 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Introduction of Additional Contract Months for Hang Seng Index and Hang Seng China Enterprises Index Futures
Enclosure 1 : Participant Circular (English)

Y

Y

22/04/2022 MDD/22/265 Arrangement of HKEX Orion Market Data Platform China Connect (Securities) (OMD-CC) for Inclusion of Exchange-Traded Funds (ETFs) in Stock Connect
Enclosure 1 : OMD-CC Interface Specification (verson 1.4)
Enclosure 2 : Participant circular

Y

21/04/2022 MDD/22/264 1) Updates on Increase Time Precision of Trade Time Field in HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) and; 2) Support of End-to-End (E2E) Testing for Hong Kong Investor Identification Regime (HKIDR)
Enclosure 1 : Participant circular

Y

20/04/2022 MDD/22/253 Implementation of Compression Mechanism on HKEX Orion Market Data Platform - Derivatives Market (OMD-D) D-Lite Datafeed
Enclosure 1 : OMD-D Interface Specification (version 1.41)
Enclosure 2 : OMD-D Developers Guide (version 1.25)

Y

Y

08/04/2022 MDD/22/237 Updated 2022 Operation Calendar for Market Data Systems in Hong Kong Holidays
Enclosure 1 : Updated 2022 Market Data System Operation Calendar

Y

Y

Y

Y

Y

07/04/2022 MDD/22/235 Updated on the Implementation of Derivatives Holiday Trading on 9 May 2022
Enclosure 1 : Participant Circular (English)

Y

Y

30/03/2022 MDD/22/195 New Mobile Market Data Service - Update

Y

Y

Y

Y

25/03/2022 MDD/22/176 Effective Day of Discontinuation of Provisioning Certain Types of Free-Text of Stock in HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH)
Enclosure 1 : Participant Circulars (English)

Y

11/03/2022 MDD/22/156 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Implementation of Derivatives Holiday Trading on 9 May 2022
Enclosure 1 : Participant Circular (English)

Y

Y

01/03/2022 MDD/22/130 Revision on the Capital Adjustment Method for Stock Futures and Stock Options in Relation to Spin-offs
Enclosure 1 : Participant Circulars (English)

Y

Y

28/01/2022 MDD/22/074 Introduction of HSI ESG Enhanced Index in HKEX Orion Market Data Platform (OMD) Index Datafeed
Enclosure 1 : OMD-C Interface Specifications (version 1.34b)
Enclosure 2 : OMD-C MMDH Interface Specifications (version 1.33b

Y

Y

Y

25/01/2022 MDD/22/062 Final strike information for CITIC Securities Company Limited Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information

Y

Y

19/01/2022 MDD/22/049 Final strike information for Tencent Holdings Ltd. Stock Options Contracts after the Capital Adjustment
Enclosure 1 : Final strike information for Tencent Stock Options

Y

Y

17/01/2022 MDD/22/039 Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of CITIC Securities Company Limited Stock Futures and Options Contracts - Rights Issue
Enclosure 1 : Participant Circulars (English)

Y

Y

14/01/2022 MDD/22/036 Briefing Sessions for Derivatives Holiday Trading
Enclosure 1 : Participant Circulars (English)

Y

Y

14/01/2022 MDD/22/034 Practice Session for Special Purpose Acquisition Companies (SPACs)
Enclosure 1 : Participant Circular
Enclosure 2 : Test Rundown of the Practice Session
Enclosure 3 : Stock Code Allocation Plan

Y

07/01/2022 MDD/22/017 Arrangement of OMD-C and MMDH for SPAC Shares and Warrants
Enclosure 1 : OMD-C Interface Specification v1.34a
Enclosure 2 : OMD-C MMDH Interface Specification v1.33a

Y

07/01/2022 MDD/22/018 Addition of New Headline Categories in Issuer Information feed Service ('IIS')
Enclosure 1 : IIS Transmission Specification v3.15
Enclosure 2 : IIS Transmission Specification(News Headline)v2.12

Y

07/01/2022 MDD/22/019 Final Strike Information for Six New Stock Options Contracts Available for Trading on 10 January 2022
Enclosure 1 : Final strike information for six new stock options

Y

Y

06/01/2022 MDD/22/016 Arrangement of HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Implementation of Derivatives Holiday Trading for MSCI Futures and Options
Enclosure 1 : Participant Circulars (English)
Enclosure 2 : OMD-D Interface Specification (v1.40)
Enclosure 3 : List of all MSCI Futures and Options

Y

Y

04/01/2022 MDD/22/004 Update on Headline Category in Issuer Information feed Service ('IIS') Effective from 17 January 2022
Enclosure 1 : IIS Transmission Specification v3.14
Enclosure 2 : IIS Transmission Specification(News Headline)v2.11

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
OMD-CC = Orion Market Data Platform - China Connect (Securities)