The technology division of Nyse Euronext has outlined plans to create 400 jobs at a new development facility in Northern Ireland.
The exchange operator's Nyse Technologies unit will move to the facility in 2010, creating technology, operational and corporate jobs "in the coming years". Of the 400 positions, 75 had previously been announced.
Invest Northern Ireland will provide up to £9.6 million to support the move.
Nyse Euronext says the Belfast operation is a "centre of excellence" for its delivery of low latency messaging capabilities, data distribution and securities operations.
The group has been looking at expanding its operations in Belfast since buying Wombat Financial Software last year. The New York-based market data technology firm already had a strong presence in the city after itself securing funding from Invest Northern Ireland in 2005.
Duncan Niederauer, CEO, Nyse Euronext, says: "Northern Ireland will become increasingly important to our global growth strategy and complement our technology centres in Paris and London. Together, these centres of excellence will enable us to effectively address the growing technology and trading needs of our customers and our company."