Smithsonian Institution
Federal Agency
Top Contractors
| Rank | Contractor | Amount |
|---|---|---|
| #1 | Clark Construction Group LLC | $1.6B |
| #2 | Grunley Construction Co., Inc. | $242.7M |
| #3 | Ptsi Managed Services Inc. | $189.2M |
| #4 | Potomac Electric Power Co | $163.4M |
| #5 | Universal Protection Service, Limited Partnership | $86.9M |
| #6 | Smithsonian Institution | $80.1M |
| #7 | Siemens Industry Inc. | $61.9M |
For this entity, the underlying data on this page comes from USASpending.gov federal awards data. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to USASpending.gov federal awards data; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. federal contracts, grants, and awards. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.