Notice No. 029 26 March 2007

							                                                                                                                           No: 029




ACH & ASX Markets Notice                 DERIVATIVES – GRAIN OPTIONS & FUTURES

 Date: 26 March, 2007
                                         MARGIN INTERVALS FOR OPTIONS OVER GRAIN FUTURES AND INITIAL
                                         MARGINS FOR GRAIN FUTURES
 Key topics
 1. Margin Intervals for Options         The margin intervals and initial margins for the TIMS margin system with effect from
    over Grain Futures and Initial       27 March are as follows:
    Margins for Grain Futures

                                           Product        Margin Interval (%)   Change      Initial Margin ($)     Change
                                            ACM                   4.0              -                450               -
                                             AFB                  5.5              -                325                -
                                            ASM                   5.5              -                325                -
                                            AWF                   5.5              -                310               -
                                            AWM                   5.5              -                330                -
 Authorised by:
 Samantha Hettihewa
                                         *denotes a change in Margin Interval
 ASX contacts                            **denotes a change in Initial Margin

 Verinder Badhni
                                         The interest rate paid to Participants on cash margins will reflect the earnings rate
                                         earned by investing the Cash Cover on a short term or 11.00am basis, minus a 0.50
                                         percent administration fee. The current interest rate is displayed in the Derivatives
                                         Clearing System.



 Telephone
 02 9227 0595


 Australian Clearing House Pty Ltd
 ABN 48 001 314 503
 ASX Limited
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 Exchange Centre
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 Sydney NSW 2000
 PO Box H227
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 NSW 1215
 Telephone 61 2 9227 0697
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 Internet: http://www.asx.com.au
 DX 10427 Stock Exchange Sydney




 No responsibility is accepted for any
 inaccuracies contained in the matter
 published.




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