In her new role, Ms. Costello will drive and manage the growth and development of Fidessa's buy-side business, a key part of Fidessa's strategic, global expansion plans. She reports to Paul Nokes, Fidessa's Global Buy-side CEO.

Following her six years as a key Fidessa executive responsible for buy-side client services, Ms. Costello now oversees sales, strategy, client management, business development and internal operations in her new role. Prior to Fidessa, she was Executive Director of Global Integration Consulting at Omgeo. She has also held senior positions at Reuters America and TIBCO Software, having started her career at Thomson Financial Services Inc.

Paul Nokes, CEO of Fidessa's Buy-side business, comments: "Fidessa has made significant investment in its buy-side business in recent years to firmly reinforce its position as a leading supplier in this space. Megan's business and management experience, as well as her financial technology sector expertise, will serve her well in this leadership position."

"Her intrinsic knowledge of the company's buy-side products and services, as well as her deep understanding of our clients and the challenges and opportunities they face in the marketplace, will yield many material contributions to the business as we continue to leverage Fidessa's global footprint and assert our regional presence from Boston," continues Nokes.

Megan Costello adds: "Fidessa has a strong history of providing unparalleled products and services to the market, and we are working tirelessly to help our clients address the key challenges they face today - particularly from regulation, increased complexity and demands for transparency in an environment where cost pressures are at an all-time high. Our proven experience and scale mean we can offer unique service models to the marketplace, and we will continue to invest in and expand our buy-side business significantly to further enhance the solutions we offer, as the marketplace would expect."