Notice of Withdrawal – Dynamic Order Protection Rule – TSX Inc. and Alpha Exchange Inc.

In accordance with the Process for the Review and Approval of Rules and the Information Contained in Form 21-101F1 and the Exhibits thereto (the "Protocol") in Schedule 6 of the Ontario Securities Commission recognition order recognizing each of TSX Inc. ("TSX") and Alpha Exchange Inc. (“Alpha”, and together with TSX, the “Exchanges”) as an exchange, each of the Exchanges has withdrawn the proposed enhancements to existing options available to participants for complying with the Order Protection Rule as described in the Notice of Approval published on April 18, 2019. To the extent either of the Exchanges decides to pursue the proposal again, it will be published for comment in accordance with the requirements of the Protocol.