https://www.hkex.com.hk/Services/RSS-Feeds/The-SEHK-Options-Clearing-House-Limited?sc_lang=enParticipant Circulars - The SEHK Options Clearing House Limited RSSen{5E34A284-D2BF-4628-B522-D24FAEFA4F0C}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_254_2026Oct05170249?sc_lang=enCollateral Haircut AdjustmentMon, 05 Oct 2026 18:30:24 +0800{594500EA-A456-4C43-B3C1-C7FC50667785}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_250_2026Oct02133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsFri, 02 Oct 2026 13:37:17 +0800{26B4A5B1-C219-476B-B1E0-0DDEC734A381}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260928_MSM_011_2026?sc_lang=enCompliance Bulletin (Issue No. 19) - (1) Standard Penalties under HKEX Rules; (2) Participants’ Obligation to Make Timely Submissions to HKEX; (3) Client Protection Measures; and (4) Updated Guidelines on Client Margin RequirementsMon, 28 Sep 2026 19:39:34 +0800{C6393821-5EBE-4E70-8D25-945250C7F34A}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/PT_SCS_SEOCH_067_2026?sc_lang=enAcceptance of China Government Bonds as Non-Cash Collateral in SEOCHFri, 25 Sep 2026 18:21:17 +0800{2ED2855C-3DF3-424E-AC5A-E6DA2EBD6469}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_239_2026Sep22183000?sc_lang=enReminder on Payment Obligations of Clearing ParticipantsTue, 22 Sep 2026 18:54:50 +0800{4CFC15E2-9CCB-4E28-82C5-8D111B6F322F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_OEC_065_2026?sc_lang=enSuspension of Report Access Platform (RAP) service on the following weekendsThu, 10 Sep 2026 18:17:18 +0800{654591C6-9218-4672-AB51-4285F0A3AE19}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/PT_CLR_SEOCH_063_2026?sc_lang=enMarket Readiness Confirmation for Supporting Settlement Services in Hong Kong Securities Market on Half-Day Trading Days Thu, 03 Sep 2026 12:29:59 +0800{032B7760-575E-4BD2-87FD-1820356A8C20}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_224_2026Sep02170249?sc_lang=enCollateral Haircut AdjustmentWed, 02 Sep 2026 17:24:52 +0800{B093ADF9-8654-4000-9D24-641534C3E0C2}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_221_2026Sep02140305?sc_lang=enStock Collateral HaircutWed, 02 Sep 2026 14:13:59 +0800{403379BC-CCAF-4E38-8D38-3A4A72675639}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_219_2026Sep01133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsTue, 01 Sep 2026 13:28:26 +0800{622DEA23-7DDB-4603-946D-ADEFF5E26720}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_215_2026Aug28163256?sc_lang=enMargin Parameters and Update of PC-SPAN Organisation Master File for New Stock Option ClassFri, 28 Aug 2026 16:44:15 +0800{107933F4-75C9-4702-A6E3-CB6515055295}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_PT_SCS_062_2026?sc_lang=enBriefing Session on Acceptance of China Government Bonds as Non-Cash CollateralThu, 27 Aug 2026 13:12:09 +0800{E30D6367-75CC-4C26-A86D-F2A16849902F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_211_2026Aug24200325?sc_lang=enUpdate of PC-SPAN Organisation Master FileMon, 24 Aug 2026 19:08:16 +0800{FF892B13-EBB2-45B4-A5DC-A630575A2562}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/GRM_FRM_007_20260821?sc_lang=enReminder - Minimum Client Margin Requirements for Stock Options ProductsFri, 21 Aug 2026 17:10:37 +0800{DE9B5526-81F8-4176-A778-7E85042A6DAD}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_203_2026Aug10160347?sc_lang=enMargin Parameters and Update of PC-SPAN Organisation Master File for New Stock Option ClassesFri, 14 Aug 2026 15:20:02 +0800{FF0C3820-2307-4035-B1C6-5F25E7502AE5}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_193_2026Aug03190525?sc_lang=enMargin Parameters and Update of PC-SPAN Organisation Master File for New Stock Option ClassesFri, 14 Aug 2026 15:03:32 +0800{1C696C24-A57C-4F2E-8548-9170066B511B}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_CM2_061_2026Aug11170305?sc_lang=enSuspension of Report Access Platform (RAP) service on the following weekendsTue, 11 Aug 2026 20:55:05 +0800{A2E70F0E-3E6E-4EF7-A78E-BAA4045F9248}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_205_2026Aug11200325?sc_lang=enUpdate of PC-SPAN Organisation Master FileTue, 11 Aug 2026 20:37:03 +0800{A3E374BD-8800-4E42-9AA9-1908160415D4}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_198_2026Aug04180303?sc_lang=enCollateral Haircut AdjustmentTue, 04 Aug 2026 18:35:44 +0800{A6A8AC06-7D22-43E0-92D5-2FC910C26B4F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_189_2026Aug03133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsMon, 03 Aug 2026 13:21:18 +0800{B1C7FFE0-934C-45D1-956A-31DD1D487D3D}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_184_2026Jul27170300?sc_lang=enMargin Parameters and Update of PC-SPAN Organisation Master File for New Stock Option ClassMon, 27 Jul 2026 17:27:11 +0800{9D4BAD09-7762-4B9C-96DD-D44DA6986313}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_178_2026Jul10184035?sc_lang=enUpdate of PC-SPAN Organisation Master File for the Adjustment to Display of Underlying Closing Prices of Stock Options in DCASSFri, 10 Jul 2026 18:20:03 +0800{5EF3348F-8452-40C9-BC0C-833C1D93C52F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_175_2026Jul07174035?sc_lang=enMargin Parameters and Update of PC-SPAN Organisation Master File for New Stock Option ClassTue, 07 Jul 2026 18:03:11 +0800{0D740B1E-8D86-4B26-91FD-832E3B6A1E92}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_172_2026Jul03163330?sc_lang=enCollateral Haircut AdjustmentFri, 03 Jul 2026 16:56:15 +0800{D6B9605C-1E4A-40EE-851B-CD4DDA9EF4B9}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_167_2026Jul02133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsThu, 02 Jul 2026 13:32:45 +0800{AE81D8E7-143B-4B9D-9AD9-210145015657}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260630_MSM_008_2026?sc_lang=enCompliance Bulletin (Issue No. 18) - (1) Hong Kong Investor Identification Regime (“HKIDR”) – (i) Input Format for BCAN Tagging; and (ii) Client Type Classification in BCAN-CID Mapping File; (2) Stock Connect Northbound BCAN Requirements; (3) Guidance on Controls on Large or Highly Leveraged Orders and Trades; and (4) Dealings with Suspended Exchange Participants Tue, 30 Jun 2026 17:58:24 +0800{0CFB962C-461A-4C15-9729-CC29F9662001}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260624_CLR_DCASS_059_2026?sc_lang=enAdjustment to Display of Underlying Closing Prices of Stock Options in DCASS and Specified Reports - UpdateWed, 24 Jun 2026 16:47:51 +0800{C4BC9023-F83E-42C9-98C8-BB8E1D52F473}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260623_MSM_007_2026?sc_lang=enREMINDER - 2026 Annual Attestation and Inspection Programme - Self-attestation of Compliance QuestionnaireTue, 23 Jun 2026 14:20:50 +0800{A8FEC835-A5B2-4EBA-AC6A-833608457264}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/GRM_FRM_003-SEOCH-Revision-to-CMM-Framework?sc_lang=enMinimum Client Margin Requirements for Stock Options ProductsMon, 22 Jun 2026 17:39:55 +0800{B631A392-596C-40BC-B380-AC73BE4CB3AC}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_160_2026Jun16114500?sc_lang=enVolatility Scan Range Update for Weekly Stock OptionsTue, 16 Jun 2026 12:41:02 +0800{D059E855-0536-499A-A43E-AE356AEA7E6C}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_156_2026Jun10173303?sc_lang=enVolatility Scan Range Update for Weekly Stock OptionsWed, 10 Jun 2026 17:43:55 +0800{FC7E57AA-CF4E-47F0-B009-2E5152DD54E4}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_150_2026Jun03140315?sc_lang=enStock Collateral HaircutWed, 03 Jun 2026 14:13:59 +0800{F450D866-1CEB-41BD-97CA-6BA9AB5B238A}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260602_MSM_006_2026?sc_lang=en2026 Annual Attestation and Inspection Programme - Self-attestation of Compliance QuestionnaireTue, 02 Jun 2026 19:08:25 +0800{8B4C6EE1-EB90-4B8C-BDCD-86337115BEDF}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_148_2026Jun02160316?sc_lang=enCollateral Haircut AdjustmentTue, 02 Jun 2026 16:46:18 +0800{26CCF21F-6C24-4F3E-9BF4-C0485077CF26}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_142_2026Jun01133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsMon, 01 Jun 2026 13:23:57 +0800{844CD2CC-DE3F-4A3E-BF02-73E0CA055CD5}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260529_CLR_056?sc_lang=enRescheduling of Adjustment to Display of Underlying Closing Prices of Stock Options in DCASS and Specified ReportsFri, 29 May 2026 16:30:30 +0800{7451A5B1-7DEE-4BB5-986F-E979766792BF}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260604_CLR_SEOCH_055?sc_lang=enInstallation of Google Chrome Browser for DCASS OnlineThu, 28 May 2026 17:18:54 +0800{2518C619-B1AD-493F-992D-BEBF72195EBF}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_136_2026May18180257?sc_lang=enStandardization of Date Format in DCASS Risk Management Reports (including Risk Parameter Files)<br/>Mon, 18 May 2026 19:51:19 +0800{C3C9E261-343D-4FF9-96B4-63B3771E2BB9}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/2026_CLR_SEOCH_051?sc_lang=enAdjustment to Display of Underlying Closing Prices of Stock Options in DCASS and Specified ReportsFri, 08 May 2026 17:55:29 +0800{4B298CAD-0C73-49D0-B9FB-A8DBB77DEACB}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_132_2026May05180257?sc_lang=enCollateral Haircut AdjustmentTue, 05 May 2026 18:24:40 +0800{34FDE847-7A87-46C6-86D4-9037701054AA}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_130_2026May04133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsMon, 04 May 2026 12:19:33 +0800{D3CF7280-F5AB-48E4-8CA1-E06024B271B8}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_126_2026Apr29163257?sc_lang=enVolatility Scan Range UpdateWed, 29 Apr 2026 16:54:09 +0800{181F5879-F81A-4E43-97EC-E1700E242ED8}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260427_CLR_DCASS_050_2026?sc_lang=enDownload and Upgrade of Google Chrome Browser for DCASS OnlineMon, 27 Apr 2026 17:02:46 +0800{2EBA2E82-640D-4B72-BDA3-FAEB184AD87C}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260417_LSD_017_2026?sc_lang=enAmendments to the Options Clearing Rules and the Operational Clearing Procedures for Options Trading Exchange Participants of The SEHK Options Clearing House Limited Fri, 17 Apr 2026 16:38:39 +0800{3CB306A8-DA08-4910-8D6D-58264F825233}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_116_2026Apr02160313?sc_lang=enCollateral Haircut AdjustmentThu, 02 Apr 2026 16:36:17 +0800{FB4BCBFA-4A4A-4061-908F-B45975D2AE26}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260401_MSM_005_2026?sc_lang=en2026 Annual Attestation and Inspection ProgrammeWed, 01 Apr 2026 18:43:42 +0800{7DC5E2CB-8025-4977-842D-995BC5DCB61F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260401_CLR_DCASS_044_2026?sc_lang=enOrion Derivatives Platform: Upcoming Town HallWed, 01 Apr 2026 18:18:03 +0800{077834E4-A204-469E-9B9C-3270E57EA822}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/SEOCH_DCRC_109_2026Apr01133000?sc_lang=enSEOCH Reserve Fund Variable ContributionsWed, 01 Apr 2026 13:03:19 +0800{3291A998-A4F4-4080-9EB2-CF7BBB8A3163}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260331_MSM_003_2026?sc_lang=enCompliance Bulletin (Issue No. 17) - (1) Reminder on Large Open Position (“LOP”) Reporting Requirements for Positions Held or Controlled Through Multiple Brokers; (2) Dealings with Suspended Exchange Participants; and (3) Closing of the 2025 Annual Attestation and Inspection ProgrammeTue, 31 Mar 2026 22:05:30 +0800{335DC94D-9A9B-481F-820A-BE5888C90F3F}https://www.hkex.com.hk/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEOCH/2026/20260331_MSM_002_2026?sc_lang=enClosing of 2025 Annual Attestation and Inspection ProgrammeTue, 31 Mar 2026 21:39:19 +0800