Notice of Commission Approval - Material Amendments to CDS Procedures Relating to Security Master File Enhancement

CDS CLEARING AND DEPOSITORY SERVICES INC.

MATERIAL AMENDMENTS TO CDS PROCEDURES

SECURITY MASTER FILE ENHANCEMENT

NOTICE OF COMMISSION APPROVAL

In accordance with the Rule Protocol between the Ontario Securities Commission (Commission) and CDS Clearing and Depository Services Inc. (CDS), the Commission approved on August 17, 2007, amendments filed by CDS to its procedures relating to security master file enhancements. The amendments will include an additionalfield in the Security Master Field to enable the setting of a limit on the minimum trading unit field in the Security Master Field to enable the setting of a limit on the minimum trading unit for a security. A copy and description of these amendments were published for comment on June 22, 2007 at (2007) 30 OSCB 5798. No comments were received.