The Ontario Securities Commission today issued a notice and request for comment related to the proposed acquisition by the Maple Group Inc. of TMX Group, Alpha Trading Systems Limited Partnership and Alpha Trading Systems Inc., the Canadian Depository for Securities Limited and, indirectly, CDS Clearing and Depository Services Inc. The OSC's notice summarizes the Maple Group's proposal, considers the potential issues raised and requests responses on specific questions. Comments are being accepted until November 7. The OSC also plans to hold policy hearings to consider the proposal in December 2011.