Is this an IB specific issue or is it the TSE directly? On IB's status page, it simply says: To TSE Traders: TSE is currently unavailable for trading. Source: http://status.interactivebrokers.net/cgi-bin/bb_status.pl Of course, I didn't receive any alerts about this. And to top it off I'm stuck in a trade I've opened before 10:30 (bought 2x short TSE ETF, HXD.TO)... I figure if it's a TSX issue there would be some news / bulletin shown somewhere on TSX' website but I didn't see anything there.