If you are a direct registered Shareholder, only limit price orders that are not executed may be canceled. To do so, log in to your Shareholder Portal, under the heading "My Orders" and click on the "View my order history" section. Select the order you wish to cancel and click on "Cancel".
Note that market price orders and best price orders cannot be canceled.
If you are an intermediary registered Shareholder or a bearer Shareholder, your financial institution remains your point of contact.