Exchange and Clearing House Participants
Participant Circulars
The SEHK Options Clearing House Limited (SEOCH)

Date Ref No. Subject

29 Dec 2008

DCRM/SEOCH/159/2008

Special Intra-day Margin Call in respect of the New Year Holiday

18 Dec 2008

DCRM/SEOCH/156/2008

Special Intra-day Margin Call and Margin Requirements during Christmas Holidays - Reminder

16 Dec 2008

DCRM/SEOCH/154/2008

SEOCH Reserve Fund Variable Contribution

11 Dec 2008

DCRM/SEOCH/152/2008

Special Intra-day Margin Call and Margin Requirements during Christmas Holidays

8 Dec 2008

DCRM/SEOCH/150/2008

Failure to Settle Morning and Intra-day Calls

1 Dec 2008

CD/DCO/SEOCH/016/2008

Clearing Services on the eves of Christmas and New Year

26 Nov 2008

DCRM/HKEx/142/2008

Japanese Yen (JPY) Haircut

25 Nov 2008

DCRM/HKEx/144/2008

Update of PC-SPAN Organisation Master File

19 Nov 2008

LSD/64/2008 Update-No.1 2008 of the Options Clearing Rules

17 Nov 2008

DCRM/SEOCH/139/2008

SEOCH Reserve Fund Variable Contribution

14 Nov 2008

CD/DCO/DCASS/014/2008

Implementation of DCASS Backup Centre

13 Nov 2008

DCRM/HKEx/137/2008

Holiday Margin Arrangements - Reminder

29 Oct 2008

CD/DCO/DCASS/013/2008

Installation of New DCASS Terminal Software for Enhanced DCASS Services

20 Oct 2008

DCRM/SEOCH/125/2008

SEOCH Reserve Fund Variable Contribution

2 Oct 2008

DCRM/HKEx/113/2008

Update of PC-SPAN Organisation Master File

26 Sept 2008

DCRM/SEOCH/107/2008

Special Intra-day Margin Call in respect of the National Day and Chung Yeung Festival

17 Sept 2008

DCRM/SEOCH/098/2008

SEOCH Reserve Fund Variable Contribution

16 Sept 2008

DCRM/SEOCH/096/2008

Suspension of SEOCH Participantship

10 Sept 2008

DCRM/SEOCH/093/2008

Special Intra-day Margin Call in respect of the day following Mid-Autumn Festival

2 Sept 2008

CD/DCO/DCASS/012/2008

Increase of Maximum Number of Connections to Each Network Gateway on DCASS and Uplift of Post-trade Transaction Input Rate

29 Aug 2008

CD/DCO/DCASS/011/2008

Revised Exhibits of the DCASS Subscription and Licence Agreement

29 Aug 2008

DCRM/HKEx/088/2008

Holiday Margin Arrangements

29 Aug 2008

DMD/231/08 Posting Information of Options Trading Exchange Participant with Online Derivatives Trading on HKEx Website

18 Aug 2008

DCRM/SEOCH/082/2008

SEOCH Reserve Fund Variable Contribution

18 Jul 2008

DCRM/SEOCH/075/2008

SEOCH Reserve Fund Variable Contribution

2 Jul 2008

CD/DCO/DCASS/010/2008 Clearing and Settlement Arrangements for Trading of Gold Futures

25 Jun 2008

DCRM/SEOCH/066/2008

Special Intra-day Margin Call in respect of the HKSAR Establishment Day

25 Jun 2008

CD/DCO/DCASS/009/2008 Upgrade of HKATS and DCASS SDNet Network Circuit Bandwidth

17 Jun 2008

DCRM/SEOCH/062/2008

SEOCH Reserve Fund Variable Contribution

4 Jun 2008

DCRM/SEOCH/058/2008

Special Intra-day Margin Call in respect of the day following Tuen Ng Festival

2 Jun 2008

DCRM/SEOCH/055/2008

Margin parameters for the New Stock Options Contracts and update of PC-SPAN Organisation Master File

19 May 2008

DCRM/SEOCH/049/2008

SEOCH Reserve Fund Variable Contribution

16 May 2008

DMD/138/08 Joint Promotional Program on Stock Options

07 May 2008

DCRM/SEOCH/048/2008

Special Intra-day Margin Call in respect of the Buddha's Birthday

29 Apr 2008

CD/DCO/DCASS/008/2008 Implementation of Closing Auction Session - Reminder

25 Apr 2008

DCRM/SEOCH/041/2008

Special Intra-day Margin Call in respect of the Labour Day

17 Apr 2008

DCRM/SEOCH/038/2008

SEOCH Reserve Fund Variable Contribution

10 Apr 2008

CD/DCO/DCASS/007/2008 CCMS and DCASS Service Enhancements

01 Apr 2008

DCRM/HKEx/035/2008

Update of PC-SPAN Organization Master File

31 Mar 2008

DCRM/SEOCH/034/2008

Special Intra-day Margin Call in respect of the Ching Ming Festival

17 Mar 2008

DCRM/SEOCH/027/2008 Special Intra-day Margin Call in respect of the Easter Holiday

17 Mar 2008

CD/DCO/DCASS/006/2008 DCASS Terminal Access Control - Optional Features

14 Mar 2008

CD/DCO/DCASS/005/2008 Upgrade of HKATS and DCASS to Release 19.1 - End of Stabilisation Period

14 Mar 2008

DCRM/SEOCH/024/2008 SEOCH Reserve Fund Variable Contribution

18 Feb 2008

CD/DCO/DCASS/004/2008 Rollout of the Upgrade of HKATS and DCASS to Release 19.1

18 Feb 2008

DCRM/SEOCH/019/2008 SEOCH Reserve Fund Variable Contribution

30 Jan 2008

DCRM/SEOCH/017/2008 Special Intra-day Margin Call and Margin Requirements during Lunar New Year Holdiays - Reminder

24 Jan 2008

DCRM/SEOCH/011/2008 Special Intra-day Margin Call and Margin Requirements during Lunar New Year Holdiays

18 Jan 2008

DCRM/SEOCH/005/2008 SEOCH Reserve Fund Variable Contribution

15 Jan 2008

CD/DCO/DCASS/003/2008 Introduction of Five-Digit Stock Codes

11 Jan 2008

CD/DCO/DCASS/002/2008 Market Rehearsal 2 for the Upgrade of HKATS and DCASS to Release 19.1

03 Jan 2008

CD/DC/DCASS/001/2008 Lower the In-The-Money Triggering Percentage for Automatic Generation of Stock Options Exercise Requests