Corporate Office Properties Trust
Corporate Office Properties Trust is a real estate investment trust that invests in office buildings, mostly in the suburbs of the Washington, D.C. metropolitan area. It primarily leases to the U.S. government or companies in the arms industry. As of December 31, 2019, the company owned 148 office buildings comprising 15.4 million square feet and 22 single-tenant data centers comprising 3.7 million square feet.
Tenants
The company's largest tenants are as follows:| Rank | Tenant | % of total 2019 revenue |
| 1 | General Services Administration | 34.6% |
| 2 | Vadata | 7.9% |
| 3 | General Dynamics | 4.9% |
| 4 | Boeing | 3.2% |
| 5 | CACI | 2.5% |
| 6 | Northrop Grumman | 2.2% |
| 7 | CareFirst BlueCross BlueShield | 2.1% |
| 8 | Booz Allen Hamilton | 2.1% |
| 9 | Wells Fargo | 1.3% |
| 10 | AT&T Corporation | 1.3% |