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TORONTO (Reuters) - Still stinging from calling off its marriage to the London Stock Exchange, TMX Group, operator of the Toronto Stock Exchange, wasn't ready on Thursday to start talking about a tie-up with the Canadian suitor that has made a hostile bid to take it over. "We've been very...

The London Stock Exchange was scrambling to establish how a human error in possibly "suspicious circumstances" had knocked out one of its dealing platforms on Tuesday as the exchange conceded it would now have to delay switching over to a new trading system until next year. The developments are...