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

Date	Ref No.	Subject	Securities Market Data	Derivatives Market Data		Issuer News	Stock Connect Market Data
Date	Ref No.	Subject	OMD-C	OMD-D	D-LITE	IIS	OMD-CC
22/11/2024	MDD/24/684	End of Stabilization Period for the Launch of OMD Index Datafeed Enhancement	Y	Y	Y
15/11/2024	MDD/24/643	Introduction of Hang Seng HKEX Stock Connect China Enterprises Index in HKEX Orion Market Data Platform (OMD) Index Datafeed Enclosure 1 : OMD-C Interface Specifications (version 1.39a) Enclosure 2 : OMD-C Interface Specifications (version 1.41) Enclosure 3 : OMD-C MMDH Interface Specifications (version 1.38a Enclosure 4 : OMD-C MMDH Interface Specifications (version 1.40)	Y	Y	Y
01/11/2024	MDD/24/655	Final Strike Information for Weekly Stock Options Contracts Available for Trading on 4 November 2024 Enclosure 1 : Final strike information for Weekly Stock Options		Y	Y
21/10/2024	MDD/24/637	Updated Arrangement of OMD-D for Introduction of Weekly Stock Options Contracts on 4 November 2024 Enclosure 1 : Exchange Circular (English)		Y	Y
18/10/2024	MDD/24/630	Updates on Arrangement of HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) for Enhancement of Settlement Arrangement for Multi-counter Eligible Securities Enclosure 1 : Exchange Circulars (English) Enclosure 2 : OMD-C Interface Specifications (version 1.40) Enclosure 3 : OMD-C MMDH Interface Specifications (version 1.39)	Y
14/10/2024	MDD/24/620	Arrangements Relating to the Capital Adjustment of Haitong Securities Co., Ltd. Stock Futures and Option Contracts - Proposed Merger Enclosure 1 : Exchange Circulars (English)		Y	Y
14/10/2024	MDD/24/622	Arrangement for the Launch of OMD Index Datafeed Enhancement	Y	Y	Y
27/09/2024	MDD/24/582	Mainland Market Data Hub (MMDH) Data Centre Failover Drill on 26 October 2024	Y
16/09/2024	MDD/24/562	Implementation of Severe Weather Trading Starting from 23 September 2024 Enclosure 1 : Exchange Circulars (English)	Y	Y	Y	Y	Y
10/09/2024	MDD/24/554	Final Strike Information for MGM China Holdings Limited Stock Option Contracts after the Capital Adjustment Enclosure 1 : Final strike info. for MGM CHINA stock options		Y	Y
02/09/2024	MDD/24/540	Derivatives Market (OMD-D) for the Capital Adjustment of MGM China Holdings Limited Stock Option Contracts - Special Dividend Enclosure 1 : Exchange Circular (English)		Y	Y
31/08/2024	MDD/24/543	Final Strike Information for Weekly Hang Seng TECH Index Options Available for Trading on 2 September 2024 Enclosure 1 : Final strike information for Weekly HSTECH Options		Y	Y
30/08/2024	MDD/24/539	Revised Last Trading Day and Final Settlement Day of MSCI Malaysia (USD) Index Futures October 2024 Contract Enclosure 1 : Exchange Circular		Y	Y
13/08/2024	MDD/24/478	Regular Data Centre Failover Rehearsal for Market Data Systems on 7 September 2024 Enclosure 1 : Rundown of the Rehearsal	Y	Y	Y	Y	Y
13/08/2024	MDD/24/478	Regular Data Centre Failover Rehearsal for Market Data Systems on 7 September 2024 Enclosure 1 : Rundown of the Rehearsal	Y	Y	Y	Y	Y
09/08/2024	MDD/24/501	Updates on HKEX Orion Market Data Platform (OMD) Index Datafeed Enhancement - Practice Sessions and Market Rehearsals	Y	Y	Y
26/07/2024	MDD/24/482	Arrangement of HKEX Orion Market Data Platform - Securities Market(OMD-C) and Mainland Market Data Hub (MMDH) for the Rollout of Adjustment to Market Data Dissemination in Relation to Northbound and Southbound Trading under Stock Connect - The Remaining Enclosure 1 : Exchange Circular	Y
24/07/2024	MDD/24/480	Updates on Introduction of Weekly Hang Seng TECH Index Options Enclosure 1 : Exchange Circular		Y	Y
23/07/2024	MDD/24/477	Arrangement of HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Introduction of Weekly Stock Options Contracts on 4 November 2024 Enclosure 1 : Exchange Circular (English) Enclosure 2 : Vendor Access Code Confirmation Form		Y	Y
22/07/2024	MDD/24/465	Arrangement of OMD-C and MMDH for Trading Arrangements of Structured Products Linked to Hang Seng Indices Enclosure 1 : Exchange Circular (English)	Y
15/07/2024	MDD/24/461	Arrangement of Market Data Systems for Severe Weather Trading Enclosure 1 : Exchange Circulars (English)	Y	Y	Y	Y	Y
12/07/2024	MDD/24/454	Arrangement of Orion Market Data Platform - Derivatives Market(OMD-D) for the Updates on the Effective Date of Enhanced Self-Match Prevention (SMP) Service in the Derivatives Market Enclosure 1 : Exchange Circular (English)		Y	Y
02/07/2024	MDD/24/411	Index Information Supplied by China Securities Index Company Limited Enclosure 1 : Letter on Index Information Supplied by CSIC Enclosure 2 : Guiding Note on Use of Index Information CSIC Enclosure 3 : CESC Announcement CESCPD Enclosure 4 : CESC Press Release CESFHY	Y	Y	Y	Y
28/06/2024	MDD/24/413	Consultation on Proposed Reduction of Minimum Spreads in Hong Kong Securities Market Enclosure 1 : Exchange Circular (English)	Y
27/06/2024	MDD/24/408	Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Introduction of Weekly Hang Seng TECH Index Options Enclosure 1 : Participant Circular (English) Enclosure 2 : OMD-D Interface Specifications (version 1.46) Enclosure 3 : Vendor Access Code Confirmation Form		Y	Y
25/06/2024	MDD/24/406	Final Strike Information for Yankuang Energy Group Co. Ltd. Stock Option Contracts after the Capital Adjustment Enclosure 1 : Final Strike Information for Yankuang Stock Option		Y	Y
21/06/2024	MDD/24/399	Introduction of CES CRIC Leading Mainland Property Developer Index and CES Forecast High Dividend Yield Index in HKEX Orion Market Data Platform (OMD) Index Datafeed Enclosure 1 : OMD-C Interface Specifications (version 1.39) Enclosure 2 : OMD-C MMDH Interface Specifications (version 1.38)	Y	Y	Y
17/06/2024	MDD/24/386	Updates on HKEX Orion Market Data Platform (OMD) Index Datafeed Enhancement - Provision of Test Environment and Readiness Declaration	Y	Y	Y
03/06/2024	MDD/24/346	End of Stabilization Period for the launch of Issuer Information feed Service (IIS) Technical Upgrade				Y
30/05/2024	MDD/24/348	Arrangement of HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) for Enhancement of Settlement Arrangement for Multi-counter Eligible Securities Enclosure 1 : Exchange Circulars (English)	Y
24/05/2024	MDD/24/342	Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of Yankuang Energy Group Co. Ltd. Stock Futures and Option Contracts - Bonus Shares Enclosure 1 : Exchange Circulars (English)		Y	Y
21/05/2024	MDD/24/335	HKEX Orion Market Data Platform (OMD) Index Datafeed Enhancement Enclosure 1 : OMD-C Connectivity Guide (version 2.7) Enclosure 2 : OMD-D Connectivity Guide (version 1.20) Enclosure 3 : OMD-C Developers Guide (version 1.14) Enclosure 4 : OMD-D Developers Guide (version 1.27)	Y	Y	Y
20/05/2024	MDD/24/331	Readiness Test for Self-Match Prevention (SMP) Service in the Derivatives Market Enclosure 1 : Exchange Circular (English)		Y	Y
08/05/2024	MDD/24/320	Final Strike Information for HSBC Holdings plc Stock Option Contracts after the Capital Adjustment Enclosure 1 : Final Strike Info for HSBC Holdings Stock Options		Y	Y
08/05/2024	MDD/24/319	Arrangement of HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for Introduction of Weekly Stock Options Contracts in 2024 Enclosure 1 : Exchange Circular (English) Enclosure 2 : OMD-D Interface Specifications (version 1.45)		Y	Y
07/05/2024	MDD/24/308	Addition of Headline Categories in Issuer Information feed Service (IIS) Enclosure 1 : IIS Transmission Specification (version 4.4)				Y
07/05/2024	MDD/24/318	Rollout for Change of Character Format of Derivative Warrants ('DWs'), Callable Bull/Bear Contracts ('CBBCs') and Inline Warrants ('IWs') Stock Short Names Enclosure 1 : Exchange Circular (English)	Y
03/05/2024	MDD/24/306	Arrangement of HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) for the Adjustment to Market Data Dissemination in Relation to Northbound Trading under Stock Connect - Post Release Test Enclosure 1 : Exchange Circular (English)	Y
03/05/2024	MDD/24/307	Introduction of Marketing Programme for Mainland TV Broadcast Service	Y	Y	Y
02/05/2024	MDD/24/314	Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Capital Adjustment of HSBC Holdings plc Stock Futures and Option Contracts - Special Dividend Enclosure 1 : Exchange Circulars (English)		Y	Y
29/04/2024	MDD/24/297	Arrangement for the Launch of Issuer Information feed Service (IIS) Technical Upgrade				Y
26/04/2024	MDD/24/282	Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the After-Hours Trading on 27 May 2024 Enclosure 1 : Exchange Circular (English)		Y	Y
25/04/2024	MDD/24/293	Arrangement upon Issuance of Typhoon, Extreme Conditions, and/or Rainstorm Warning Signal	Y	Y	Y	Y	Y
24/04/2024	MDD/24/294	Adjustment to Market Data Dissemination in Relation to Northbound Trading under Stock Connect					Y
22/04/2024	MDD/24/287	Revised Last Trading Day and Final Settlement Day of MSCI Vietnam (USD) Index Futures April 2024 Contract Enclosure 1 : Exchange Circular (English)		Y	Y
15/04/2024	MDD/24/270	Change of Character Format of Derivative Warrants ('DWs'), Callable Bull/Bear Contracts ('CBBCs') and Inline Warrants ('IWs') Stock Short Names Enclosure 1 : Exchange Circular (English)	Y
12/04/2024	MDD/24/233	Arrangement of HKEX Orion Market Data Platform - Securities Market (OMD-C) and Mainland Market Data Hub (MMDH) for the Adjustment to Market Data Dissemination in Relation to Northbound Trading under Stock Connect Enclosure 1 : Exchange Circular (English) Enclosure 2 : OMD-C Interface Specifications (version 1.38) Enclosure 3 : OMD-C MMDH Interface Specifications (version 1.37)	Y
10/04/2024	MDD/24/243	Final Strike Information for Weibo Corporation Stock Option Contracts after the Capital Adjustment Enclosure 1 : Final strike information for Weibo stock options		Y	Y
27/03/2024	MDD/24/230	Updates on Introduction of the 10-year China Ministry of Finance Treasury Bond Futures Enclosure 1 : Exchange Circular (English)		Y	Y
27/03/2024	MDD/24/225	Market Data Packages for the Mainland Market	Y	Y	Y	Y	Y
26/03/2024	MDD/24/215	Market Data Marketing Programmes for New Derivatives Products - Updates		Y
25/03/2024	MDD/24/218	Market Rehearsal for Issuer Information feed Service (IIS) Technical Upgrade				Y
19/03/2024	MDD/24/208	Post Release Test for the Launch of Self-Match Prevention Service in Hong Kong Securities Market Enclosure 1 : Exchange Circular (English)	Y
18/03/2024	MDD/24/210	Arrangement in OMD-D for the Capital Adjustment of Weibo Corporation Stock Futures & Option Contracts - Special Cash Dividend Enclosure 1 : Exchange Circulars		Y	Y
11/03/2024	MDD/24/175	Additional Practice Session for the introduction of Self-Match Prevention Service in Hong Kong Securities Market Enclosure 1 : Exchange Circular (English)	Y
27/02/2024	MDD/24/145	Practice Session for the introduction of Self-Match Prevention Service in Hong Kong Securities Market Enclosure 1 : Exchange Circular (English)	Y
27/02/2024	MDD/24/146	Post Release Tests and Rollout for Upgrade of SDNET/2 WAN Gateways Enclosure 1 : Test rundown of the Post Release Test 1 Enclosure 2 : Exchange Circulars (English)	Y	Y	Y	Y	Y
23/02/2024	MDD/24/140	Updates on the Inclusion of Currency Futures and Options in Derivatives Holiday Trading on 29 March Enclosure 1 : Exchange Circular (English)		Y	Y
22/02/2024	MDD/24/144	Final Strike Information for China Resources Land Limited Stock Option Contracts after the Contract Adjustment Enclosure 1 : Final strike information for China Res Land stock		Y	Y
21/02/2024	MDD/24/128	Updates on Issuer Information feed Service (IIS) Technical Upgrade - Additional Practice Session and Updated Implementation Schedule				Y
09/02/2024	MDD/24/116	Arrangement in HKEX Orion Market Data Platform - Derivatives Market (OMD-D) for the Contract Adjustment to China Resources Land Limited Option Contract - Change in Contract Size Enclosure 1 : Exchange Circular (English)		Y	Y
15/01/2024	MDD/24/044	Practice Sessions and Post Release Tests for Upgrade of SDNET/2 WAN Gateways Enclosure 1 : Exchange Circulars (English)	Y	Y	Y	Y	Y
15/01/2024	MDD/24/045	Inclusion of Currency Futures and Options in Derivatives Holiday Trading on 29 March 2024 Enclosure 1 : Exchange Circular (English)		Y	Y
12/01/2024	MDD/24/034	Updates on Issuer Information feed Service (IIS) Technical Upgrade - Updated Implementation Schedule and IIS Transmission Specification Enclosure 1 : IIS Transmission Specification version 4.3.pdf				Y
11/01/2024	MDD/24/030	Revised Last Trading Day and Final Settlement Day of Indian Rupee vs Renminbi (Hong Kong) ('INR/CNH') Futures, MSCI Philippines (USD) Index Futures and TSI Iron Ore Fines 62 percent Fe CFR China Futures Contracts Enclosure 1 : Exchange Circular (English)		Y	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)