the largest stock exchange in Canada and one of the largest in North America. The TSE opened in 1861 with 18 stock listings and has since become an innovator in securities trading technology. It was the first North American exchange to replace fractional pricing with decimal pricing (1996), and it was one of the first major exchanges to adopt electronic trading (1997), abandoning its trading floor for a fully computerized system. In 2000 the TSE became part of a publicly traded company, TSX Group Inc. In 2007 TSX announced that it was acquiring the derivatives market Montréal Exchange Inc. (MX).