* BAE Systems, a Rockville defense company, won a $21.4 million contract to provide engineering services and program support to the U.S. Navy's Integrated Combat Systems Division. The contract has a potential value of $96.9 million over five years if all options are exercised. BAE Systems also won a $5 million subcontract to provide configuration, business and finance and acquisition management support for both the Navy and FMS Aegis class ships. That contract is worth up to $24.9 million over five years if all options are exercised.

* Vocus, a Lanham software company, acquired District-based Gnossos Software. Terms were not disclosed. Gnossos provides software for government relations. Vocus, which provides software for government relations and public relations, said the acquisition will add hundreds of customers to its base.

* Cogent Communications Group of Washington said it had a third-quarter loss of $26.5 million ($1.43 a share) on revenue of $21.7 million. Cogent, which sells high-speed Internet services, had income of $144.5 million (86 cents) on revenue of $15.1 million during the same period a year ago.

* Varsity Group, a District company that sells textbooks to private high school students through the Internet, earned $7.3 million (41 cents a share) in the three months ended Sept. 30, compared with a profit of $3.8 million (22 cents) in the same period of the previous year. The company's third-quarter revenue rose to $32.1 million from $21.5 million.

* EPlus, a Herndon company that sells business software, said it earned $2.5 million (27 cents a share) in the quarter ended Sept. 30, down from $2.7 million (27 cents) in the same period the previous year. The company's third-quarter revenue rose to $153.9 million from $85.6 million.

* InfoData Systems, a Herndon enterprise content management company, earned $103,000 (2 cents a share) on $2.6 million in revenue during its third quarter, compared with a profit of $94,000 (2 cents) on $2 million in revenue in the year-ago quarter.

* Mobilepro, a Bethesda wireless company, said it lost $1.7 million (1 cent a share) on revenue of $5 million during its second fiscal quarter. The company lost $417,000 (zero cents) during the same period last year. During the first six months of this year, Mobilepro lost $2.5 million (1 cent) on revenue of $6.1 million.

* BioVeris recorded a loss in its second quarter after taking a $33.9 million write-off on a joint venture with its chief executive's son. The write-off followed a legal settlement in August in which the Gaithersburg biotech company agreed to sell back its interest to the joint venture. It drove the company's second-quarter loss to $45.6 million ($1.71 a share), compared with a loss of $11.3 million (42 cents) in the same period last year. Revenue increased to $7.9 million from $6 million. BioVeris spun off from Igen International in February. BioVeris said it calculated last year's financial results as if it had been operating as a separate entity.

Compiled from reports by Washington Post staff writers.