Trading has halted on the Toronto Stock Exchange and the Montreal Exchange because of an unexplained breakdown of some form. The TMX Group said that it has deicided to close the markets for “the remainder of the day” as a result of the outage. This stoppage occurred sometime around 2 p.m.
UPDATE 3 – Please be aware that all TMX markets continue to experience issues. We apologize for the inconvenience. Further updates will be provided.
— TMX Group (@TMXGroup) April 27, 2018