| Item | Obligations |
|---|---|
| UCHICAGO ARGONNE, LLC | $1B |
| W S DARLEY & CO | $982M |
| MEDLINE INDUSTRIES, LP | $773M |
| FERMI FORWARD DISCOVERY GROUP, LLC | $762M |
| NORTHROP GRUMMAN SYSTEMS CORPORATION | $489M |
| SUPPLYCORE LLC | $445M |
| DDB CHICAGO INC. | $288M |
| W.W. GRAINGER, INC. | $257M |
| BP PRODUCTS NORTH AMERICA INC. | $240M |
| CARDINAL HEALTH 200, LLC | $236M |
UCHICAGO ARGONNE, LLC led all contractors in Illinois with $1B, 11.1% of the state total.