The Toronto Stock Exchange and Montreal Exchange have shut down early for the day as a result of technical problems that began at about 2 p.m. The Toronto-based company that owns the exchanges announced the unusual decision through Twitter. A spokeswoman for the Toronto-based TMX Group said the company is investigating the cause of the disruption. The first tweet was sent out about 2 p.m., with two hours remaining in the normal trading day. A later update said TMX had decided to shut down all markets for the remainder of the day and apologized for the inconvenience.
Source: ABC News April 27, 2018 19:07 UTC