Post 200 The guide to the region's top businesses

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GTSI's building in Dulles. (Nikki Kahn/The Washington Post)

Public companies and financial services

GTSI

GTSI resells information-technology gear, and has increasingly sought to provide related services as well. The contractor has struggled since its suspension by the Small Business Administration in 2010 and has had marked drops in its sales as well as turnover in its staff. GTSI bought Fredericksburg-based Information Systems Consulting Group in August for $15 million as part of its effort to expand the company's services work. Also in August, GTSI sold its 37 percent ownership of Eyak Technology.

Trivia

GTSI was one of the earliest companies to offer Microsoft Windows to federal agencies when it was founded in 1983.

2553 Dulles View Dr.

Herndon Va., 20171

800-999-GTSI

www.gtsi.com

Founded: 1983

CEO: Sterling Phillips

Revenue: $666,710

Assets: $203,840

Employees (local): 500 (432)

NOTE: Our methodology for the rankings.