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LSE has agreed an all share merger with TMX Group, operator of Canada's largest stock exchange.

The combined group, which will have a dual stock market listing and be jointly headquartered in London and Toronto, will be worth just under £5bn including debt. It will have a combined 6,700 listings, making it the world's largest exchange by numbers of companies traded.

LSE chief Xavier Rolet will become CEO of the merged operator with TMX CEO Thomas Kloet taking on the role of president. TMX CFO Mi