[1] LSE acquired the system through acquisition of, Sri Lanka–based MillenniumIT – the original creators of the software, for £18m in 2009.
The incident was, according to LSE officials, caused by human error that "may have occurred in suspicious circumstances."
Plans were to introduce Millennium Exchange on the main share trading platform as well, in December.
LSE chief executive Xavier Rolet said that the exchange, once a monopoly, would deliver record speed and stable trading in order to fight back against the fast erosion of its dominant marketshare by specialist electronic rivals.
[8] On January 22, 2019, the London Stock Exchange Group announced [9] that its Millennium Exchange matching engine had been selected by the Hong Kong headquartered digital asset trade platform AAX.