|Chief Executive Officer|
|(Previously not ranked)|
Tony Weeresinghe (No. 15 last year), who founded London Stock Exchange Groups technology subsidiary, MillenniumIT, in Sri Lanka in 1996, stepped aside as CEO last May. John Mackay (Mack) Gill, senior vice president of corporate development and strategy at financial technology conglomerate SunGard Data Systems, took over as chief executive, with Weeresinghe now serving as MilllenniumITs nonexecutive chairman and LSEGs director of global development. Gill, 44, reports to LSEG chief operating officer and chief information officer Antoine Shagoury, who has called the appointment of the Yale University international relations MA the next important step in the development of MillenniumIT. Since its acquisition by the London exchange operator in 2009, the unit has come into its own as a rival of the technology arms of IntercontinentalExchange Group and Nasdaq OMX Group. With systems running at more than 30 client sites worldwide and touting the worlds fastest trading platform, MillenniumIT posted revenue of £13.1 million ($21.6 million) in the six months through September, up 15 percent year-over-year. Major customers include Bursa Malaysia, Hong Kong Exchanges and Clearing and the Johannesburg Stock Exchange. Last years deals included a development and technology partnership with Argentinean central securities depository Caja de Valores and what Gill terms a significant partnership with Singapore Exchange (SGX). We are extending our core exchange platform to include pre- and posttrade capabilities to offer real-time, cross-asset straight-through processing, he says. Our recent win to replace SGXs posttrade infrastructure is the kind of engagement that will drive MillenniumITs growth.
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