Top 100 Contractors in PSC H1: Quality Control Services, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation and Scaled Composites, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$103,855,325	21.4%	Rank history: #1 in FY2022, #1 in FY2023, #5 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
2	Vanguard Inspection Services Top agencies DHS (Department of Homeland Security)	$103,221,581	21.2%	Rank history: #2 in FY2022, #2 in FY2023, #4 in FY2024 and #4 in FY2025; up 2 since FY2020.
3	Parsons Brinckerhoff Holdings Inc. Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$83,647,400	17.2%	Rank history: #3 in FY2022, #6 in FY2023, #9 in FY2024 and not on the FY2025 list; down 1 since FY2020.
4	Peckham Vocational Industries, Inc. Top agencies Army (Department of the Army)	$27,008,212	5.6%	Rank history: #4 in FY2022, #4 in FY2023, #3 in FY2024 and #3 in FY2025; new, not ranked in FY2020.
5	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$10,745,618	2.2%	Rank history: #6 in FY2022, #5 in FY2023, #14 in FY2024 and not on the FY2025 list; up 5 since FY2020.
6	RTX Corporation 3 awardees, including Rockwell Collins, Inc. and Carrier Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,145,391	2.1%	Rank history: #7 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; up 142 since FY2020.
7	Goldbelt, Incorporated Through Goldbelt Falcon LLC Top agencies USAF (Department of the Air Force)	$9,176,577	1.9%	Rank history: #10 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
8	3D Systems Corporation 3 awardees Top agencies VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$5,029,946	1.0%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
9	State of California Controllers Office 3 awardees, including California Department of Public Health, California Department of Food & Agriculture and University of California, Davis Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$3,743,223	0.8%	Rank history: not on the FY2022 list, #8 in FY2023, #18 in FY2024 and not on the FY2025 list; up 50 since FY2020.
10	Skyquest Aviation LLC Top agencies USAF (Department of the Air Force)	$3,391,031	0.7%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
11	Favor Techconsulting, LLC Top agencies VA (Department of Veterans Affairs)	$3,195,599	0.7%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
12	Sarai Services Group Inc. Top agencies Army (Department of the Army)	$2,774,430	0.6%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
13	J3 Consulting LLC Top agencies USDA (Department of Agriculture)	$2,607,769	0.5%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
14	Exponent Inc. Top agencies DHRA (Defense Human Resources Activity)	$2,045,390	0.4%	Rank history: #14 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
15	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs)	$2,042,188	0.4%	Rank history: not on the FY2022–FY2025 lists; up 252 since FY2020.
16	Wisconsin State of 2 awardees, including State of Wisconsin Department of Health Services and Trade and Consumer Protection Wisconsin Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,886,403	0.4%	Rank history: #70 in FY2022, #19 in FY2023, #25 in FY2024 and not on the FY2025 list; up 58 since FY2020.
17	The Tatitlek Corporation Through Geonorth, LLC Top agencies Navy (Department of the Navy)	$1,866,298	0.4%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
18	Rohmann Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,859,138	0.4%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
19	Tyonek Native Corporatio Through Tyonek Services Overhaul Facility-Stennis, LLC Top agencies USAF (Department of the Air Force)	$1,833,768	0.4%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
20	FAF Developments LLC Top agencies USDA (Department of Agriculture)	$1,766,420	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	Sigma Health Consulting, LLC Top agencies VA (Department of Veterans Affairs)	$1,666,283	0.3%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
22	Washington Dept of Public Inst 3 awardees, including Washington State Liquor and Cannabis Board, Washington State Department of Health and State of Washington Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,599,531	0.3%	Rank history: #33 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 54 since FY2020.
23	Texas State University System Through Texas State University Top agencies HHS (Department of Health and Human Services)	$1,570,795	0.3%	Rank history: #12 in FY2022, #10 in FY2023, #54 in FY2024 and not on the FY2025 list; down 7 since FY2020.
24	Ecolab Inc. 2 awardees, including Championx LLC Top agencies VA (Department of Veterans Affairs)	$1,510,903	0.3%	Rank history: #19 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
25	Ifc, International Fire Control S.A. Top agencies Army (Department of the Army)	$1,475,226	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Geonorth, LLC Top agencies Navy (Department of the Navy)	$1,471,920	0.3%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
27	Transportation North Carolina Department of 2 awardees, including North Carolina Department of Health & Human Services and North Carolina Department of Agriculture & Consumer Services Top agencies HHS (Department of Health and Human Services)	$1,398,571	0.3%	Rank history: #16 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
28	Ohio Civil Rights Commission 2 awardees, including Ohio Department of Agriculture and Civil Rights Commission Ohio Top agencies HHS (Department of Health and Human Services)	$1,358,917	0.3%	Rank history: #28 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
29	The Boeing Company Top agencies Army (Department of the Army)	$1,321,946	0.3%	Rank history: #31 in FY2022, #34 in FY2023, #35 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
30	Corrections Colorado Department of 2 awardees, including Colorado Department of Public Health & Environment and Colorado Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,152,664	0.2%	Rank history: #68 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2020.
31	Lockheed Martin Corporation 3 awardees Top agencies Navy (Department of the Navy)	$1,082,343	0.2%	Rank history: #8 in FY2022, not on the FY2023 list, #67 in FY2024 and #8 in FY2025; new, not ranked in FY2020.
32	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies VA (Department of Veterans Affairs)	$1,013,688	0.2%	Rank history: #40 in FY2022, #40 in FY2023, #40 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
33	Red River Technology LLC Top agencies VA (Department of Veterans Affairs)	$998,747	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	Pem-Iei JV LLP Top agencies NASA (National Aeronautics and Space Administration)	$987,604	0.2%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
35	State of Minnesota 3 awardees, including Minnesota Department of Human Services, Minnesota Department of Health and Minnesota Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$985,444	0.2%	Rank history: #27 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2020.
36	Koniag, Inc. Through Digitized Schematic Solutions LLC Top agencies USAF (Department of the Air Force)	$961,765	0.2%	Rank history: #13 in FY2022, #20 in FY2023, #22 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
37	Colorado Standby, LLC Top agencies DOS (Department of State)	$955,489	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	State of Illinois 4 awardees, including Illinois Department of Human Service, Department of Public Health Illinois and Illinois Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$915,419	0.2%	Rank history: #15 in FY2022, #17 in FY2023, #60 in FY2024 and #18 in FY2025; up 16 since FY2020.
39	Shabas Solutions LLC Top agencies HHS (Department of Health and Human Services)	$847,848	0.2%	Rank history: #39 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
40	DAV Energy Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$813,869	0.2%	Rank history: #81 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
41	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$764,460	0.2%	Rank history: #49 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
42	Pi3E JV LLP Top agencies NASA (National Aeronautics and Space Administration)	$762,708	0.2%	Rank history: #32 in FY2022, #41 in FY2023, #59 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
43	Executive Office of the State of Maryland Through Maryland Department of Health Top agencies HHS (Department of Health and Human Services)	$761,963	0.2%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
44	Commonwealth of Kentucky 2 awardees, including Public Protection Cabinet- Kentucky and Health Services Kentucky Cabinet For Top agencies HHS (Department of Health and Human Services)	$760,916	0.2%	Rank history: #46 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
45	American Pest Management Inc. Top agencies HHS (Department of Health and Human Services)	$757,850	0.2%	Rank history: #66 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
46	The Commonwealth of Massachusetts Through Massachusetts Department of Public Health Top agencies HHS (Department of Health and Human Services)	$756,662	0.2%	Rank history: #37 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
47	GDA Corp Top agencies USDA (Department of Agriculture)	$754,976	0.2%	Rank history: #51 in FY2022, #38 in FY2023, #43 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
48	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. and Siemens Industry Software Inc. Top agencies Smithsonian (Smithsonian Institution) VA (Department of Veterans Affairs) Army (Department of the Army)	$721,601	0.1%	Rank history: #30 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
49	State of Alaska Through Alaska Department of Public Safety Top agencies HHS (Department of Health and Human Services)	$719,376	0.1%	Rank history: #61 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
50	Media Plumbing & Heating Inc. Top agencies VA (Department of Veterans Affairs)	$710,542	0.1%	Rank history: #76 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
51	Hi-Tech Air & Water Purification Systems, LLC Top agencies USAF (Department of the Air Force)	$654,386	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	HGS Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$630,849	0.1%	Rank history: #82 in FY2022, not on the FY2023–FY2024 lists and #72 in FY2025; up 23 since FY2020.
53	Enapay, LLC Top agencies VA (Department of Veterans Affairs)	$625,476	0.1%	Rank history: not on the FY2022–FY2025 lists; down 16 since FY2020.
54	Johnson Controls Security Solutions LLC 6 awardees, including Johnson Controls, Inc., Johnson Controls Building Automation Systems, LLC and Johnson Controls Fire Protection LP Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$621,568	0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
55	State of New York Through NYS Department of Health Top agencies HHS (Department of Health and Human Services)	$601,057	0.1%	Rank history: not on the FY2022 list, #78 in FY2023 and not on the FY2024–FY2025 lists; down 23 since FY2020.
56	NY State Agriculture & Markets Top agencies HHS (Department of Health and Human Services)	$576,899	0.1%	Rank history: #58 in FY2022, not on the FY2023 list, #66 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
57	Iowa Department of Agriculture and Land Stewardship Top agencies HHS (Department of Health and Human Services)	$551,479	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
58	Boiler Efficiency Institute, LLC Top agencies VA (Department of Veterans Affairs)	$549,221	0.1%	Rank history: #57 in FY2022, #65 in FY2023, #61 in FY2024 and not on the FY2025 list; up 5 since FY2020.
59	Optimum Low Voltage LLC Top agencies VA (Department of Veterans Affairs)	$532,316	0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
60	The Northridge Group, Inc. Top agencies CFPB (Consumer Financial Protection Bureau)	$514,829	0.1%	Rank history: #54 in FY2022, #49 in FY2023, #82 in FY2024 and #50 in FY2025; unchanged since FY2020.
61	Technology Management & Budget Department of 2 awardees, including Michigan Department of Health and Human Services and Michigan Department of Agriculture and Rural Development Top agencies HHS (Department of Health and Human Services)	$501,098	0.1%	Rank history: #24 in FY2022, #12 in FY2023, #30 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
62	Intertek Group PLC 3 awardees, including Intertek USA Inc., Its Testing Services UK Ltd. Shj. BR. and Professional Service Industries, Inc. Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$491,353	0.1%	Rank history: #26 in FY2022, #13 in FY2023, #20 in FY2024 and not on the FY2025 list; up 155 since FY2020.
63	Ares Spectrum LLC Top agencies DOS (Department of State)	$474,064	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Conquest Solutions L.l.c Top agencies Army (Department of the Army)	$463,831	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
65	Dynamis, Inc. Top agencies DHS (Department of Homeland Security)	$450,711	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
66	SGS Canada Inc 3 awardees, including SGS Guam Inc., SGS North America Inc. and SGS Italia SPA Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Army (Department of the Army)	$441,725	0.1%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
67	Perc Water Corporation Top agencies DHS (Department of Homeland Security)	$437,640	0.1%	Rank history: #100 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
68	State of West Virginia 3 awardees, including West Virginia Department of Health and Human Resources and State of West Virginia Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$418,150	0.1%	Rank history: #44 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; down 33 since FY2020.
69	State Industrial Products Corp Top agencies GSA (General Services Administration)	$393,068	0.1%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
70	TRU Vantage Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$392,382	0.1%	Rank history: #94 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
71	Virginia Polytechnic Institute & State University Through Virginia Department of Agriculture and Consumer Services Top agencies HHS (Department of Health and Human Services)	$385,054	0.1%	Rank history: #63 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
72	Exelon Corporation Through Potomac Electric Power Co Top agencies DOJ (Department of Justice)	$375,959	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Bnl, Inc. Top agencies VA (Department of Veterans Affairs)	$370,394	0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
74	Pennsylvania Commonwealth of 2 awardees, including Pennsylvania Department of Health and Department of Agriculture Pennsylvania Top agencies HHS (Department of Health and Human Services)	$364,958	0.1%	Rank history: not on the FY2022 list, #25 in FY2023, #27 in FY2024 and #11 in FY2025; new, not ranked in FY2020.
75	Logistics Worldwide 365 LLC Top agencies Army (Department of the Army)	$358,315	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Gartner, Inc. Top agencies DOE (Department of Energy)	$349,000	0.1%	Rank history: #60 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
77	Health Department Oklahoma State Through Oklahoma State Department of Health Top agencies HHS (Department of Health and Human Services)	$346,276	0.1%	Rank history: #77 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2020.
78	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$345,316	0.1%	Rank history: #67 in FY2022, #82 in FY2023, #85 in FY2024 and #47 in FY2025; up 13 since FY2020.
79	State of Florida Through Department of Agriculture & Consumer Services Florida Top agencies HHS (Department of Health and Human Services)	$339,041	0.1%	Rank history: #72 in FY2022, #61 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
80	Rail Lazy H Contracting and Consulting LLC Top agencies USDA (Department of Agriculture)	$337,840	0.1%	Rank history: not on the FY2022 list, #86 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
81	General and Mechanical Services, LLC Top agencies DOI (Department of the Interior)	$335,143	0.1%	Rank history: not on the FY2022 list, #74 in FY2023, #100 in FY2024 and #66 in FY2025; up 72 since FY2020.
82	Exerplay, Inc. Top agencies DOI (Department of the Interior)	$331,803	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Zedek Corporation Top agencies EPA (Environmental Protection Agency)	$331,660	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 107 since FY2020.
84	Omni2Max, Inc. Top agencies USAF (Department of the Air Force)	$325,631	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
85	Georgia State of Through Georgia Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$322,053	0.1%	Rank history: not on the FY2022 list, #48 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
86	B&B Solutions US LLC Top agencies USDA (Department of Agriculture)	$319,900	0.1%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
87	State of Kansas 2 awardees, including Kansas Department of Revenue and Kansas Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$310,069	0.1%	Rank history: #56 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; down 42 since FY2020.
88	Global Systems Technologies, LLC Top agencies DHS (Department of Homeland Security)	$308,308	0.1%	Rank history: not on the FY2022 list, #93 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
89	Indigo Bioautomation, Inc. Top agencies HHS (Department of Health and Human Services)	$303,600	0.1%	Rank history: not on the FY2022–FY2025 lists; down 34 since FY2020.
90	Cherokee Nation Through Cherokee Nation Strategic Programs, L.L.C. Top agencies DOJ (Department of Justice)	$302,786	0.1%	Rank history: not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
91	A P Ventures, LLC Top agencies USAF (Department of the Air Force)	$299,042	0.1%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
92	Missouri State of 3 awardees, including Missouri Department of Health & Senior Services and Missouri Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$260,727	0.1%	Rank history: #42 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 71 since FY2020.
93	Colorado Department of Public Health & Environment Top agencies HHS (Department of Health and Human Services)	$253,949	0.1%	Rank history: #93 in FY2022, not on the FY2023 list, #17 in FY2024 and #15 in FY2025; new, not ranked in FY2020.
94	Montana Dept. of Public Health Through State of Montana Department of Health and Human Services Top agencies HHS (Department of Health and Human Services)	$241,055	<0.1%	Rank history: not on the FY2022 list, #91 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2020.
95	J&B Hartigan, Inc. Top agencies VA (Department of Veterans Affairs)	$226,478	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 96 since FY2020.
96	Cantel Medical Corp. 2 awardees, including Evoqua Water Technologies LLC and Medivators Inc. Top agencies VA (Department of Veterans Affairs)	$225,559	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
97	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$224,017	<0.1%	Rank history: #92 in FY2022, not on the FY2023 list, #71 in FY2024 and #42 in FY2025; down 3 since FY2020.
98	New Mexico Institute of Mining and Technology Top agencies Navy (Department of the Navy)	$221,583	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs)	$216,414	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
100	L Sakvarelidze National Center for Disease Control and Public Health Top agencies Army (Department of the Army)	$215,000	<0.1%	Rank history: not on the FY2022–FY2024 lists and #89 in FY2025; down 10 since FY2020.

Rankings for the codes under PSC H1

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $486 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers