Top 100 Contractors in PSC B: Special Studies/Analysis, Not R&D, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Rand Corporation Top agencies OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$236,190,695	8.0%	Rank history: #1 in FY2021, #1 in FY2023, #2 in FY2024 and #5 in FY2025; unchanged since FY2021.
2	Institute for Defense Analyses Top agencies Navy (Department of the Navy) DSCA (Defense Security Cooperation Agency) OSD (Office of the Secretary of Defense)	$220,796,878	7.5%	Rank history: #3 in FY2021, #2 in FY2023, #1 in FY2024 and not on the FY2025 list; up 1 since FY2021.
3	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. Top agencies NASA (National Aeronautics and Space Administration) Treasury (Department of the Treasury) DOT (Department of Transportation)	$131,471,451	4.4%	Rank history: #4 in FY2021, #4 in FY2023, #6 in FY2024 and #8 in FY2025; up 1 since FY2021.
4	Research Triangle Institute 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) NSF (National Science Foundation)	$123,910,897	4.2%	Rank history: #6 in FY2021, #5 in FY2023, #5 in FY2024 and #9 in FY2025; up 2 since FY2021.
5	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) EOP (Executive Office of the President)	$106,387,371	3.6%	Rank history: #2 in FY2021, #3 in FY2023, #57 in FY2024 and not on the FY2025 list; down 3 since FY2021.
6	The CNA Corporation Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$96,254,107	3.3%	Rank history: #5 in FY2021, #6 in FY2023, #7 in FY2024 and #7 in FY2025; down 1 since FY2021.
7	Educational Testing Service Top agencies ED (Department of Education)	$75,198,625	2.5%	Rank history: #7 in FY2021, #7 in FY2023, #9 in FY2024 and #10 in FY2025; unchanged since FY2021.
8	Deloitte Consulting LLP 2 awardees Top agencies Treasury (Department of the Treasury) USAF (Department of the Air Force) PBGC (Pension Benefit Guaranty Corporation)	$54,941,482	1.9%	Rank history: not on the FY2021 list, #14 in FY2023 and not on the FY2024–FY2025 lists; up 175 since FY2021.
9	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$47,346,658	1.6%	Rank history: #10 in FY2021, #15 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
10	Guidehouse Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$42,765,445	1.4%	Rank history: #13 in FY2021, #17 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
11	Unwin Co Top agencies DOE (Department of Energy)	$38,009,051	1.3%	Rank history: #14 in FY2021, #11 in FY2023, #12 in FY2024 and #14 in FY2025; up 3 since FY2021.
12	Deloitte LLP 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies PBGC (Pension Benefit Guaranty Corporation) HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$37,918,027	1.3%	Rank history: #9 in FY2021, #18 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
13	Harvard Pilgrim Health Care Inc Top agencies HHS (Department of Health and Human Services)	$36,661,335	1.2%	Rank history: #11 in FY2021, #12 in FY2023, #13 in FY2024 and #19 in FY2025; down 2 since FY2021.
14	Lockheed Martin Corporation 5 awardees Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce)	$32,900,968	1.1%	Rank history: #26 in FY2021, #31 in FY2023, #20 in FY2024 and #31 in FY2025; up 12 since FY2021.
15	RMC 2021 LLC Top agencies Navy (Department of the Navy)	$32,465,790	1.1%	Rank history: #39 in FY2021, #20 in FY2023, #29 in FY2024 and #22 in FY2025; up 24 since FY2021.
16	Johnson Controls Security Solutions LLC 2 awardees, including Johnson Controls Government Systems, LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) GSA (General Services Administration)	$31,974,264	1.1%	Rank history: #62 in FY2021, #34 in FY2023, #14 in FY2024 and not on the FY2025 list; up 46 since FY2021.
17	Leidos Holdings, Inc. 7 awardees, including Leidos, Inc. and Dynetics, Inc. Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$31,863,257	1.1%	Rank history: #8 in FY2021, #53 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2021.
18	The Mitre Corporation Top agencies DHS (Department of Homeland Security) EOP (Executive Office of the President) HHS (Department of Health and Human Services)	$30,979,437	1.0%	Rank history: #25 in FY2021, #13 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2021.
19	Janus Research Group, LLC Top agencies Army (Department of the Army)	$28,047,282	0.9%	Rank history: #24 in FY2021, #26 in FY2023, #36 in FY2024 and #36 in FY2025; up 5 since FY2021.
20	Ameresco Inc. 2 awardees, including Ameresco Federal Solutions, Inc. Top agencies USAF (Department of the Air Force) GSA (General Services Administration) DOI (Department of the Interior)	$26,678,351	0.9%	Rank history: #12 in FY2021, #10 in FY2023, #21 in FY2024 and #1 in FY2025; down 8 since FY2021.
21	ICF International, Inc. 2 awardees, including ICF Incorporated, L.L.C. and ICF Macro Inc. Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) DOT (Department of Transportation)	$24,394,528	0.8%	Rank history: #17 in FY2021, #23 in FY2023, #62 in FY2024 and not on the FY2025 list; down 4 since FY2021.
22	Westat, Inc. Top agencies ED (Department of Education) NSF (National Science Foundation) HHS (Department of Health and Human Services)	$22,125,375	0.7%	Rank history: #15 in FY2021, #16 in FY2023, #11 in FY2024 and #17 in FY2025; down 7 since FY2021.
23	H.i.g. Capital Management Inc. Through Empower AI, Inc. Top agencies HHS (Department of Health and Human Services)	$21,375,326	0.7%	Rank history: #18 in FY2021, #24 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
24	National Academy of Sciences Top agencies HHS (Department of Health and Human Services) SSA (Social Security Administration) DOE (Department of Energy)	$19,008,292	0.6%	Rank history: #20 in FY2021, #28 in FY2023, #31 in FY2024 and #53 in FY2025; down 4 since FY2021.
25	International Business Machines Corporation 3 awardees Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$18,440,904	0.6%	Rank history: #16 in FY2021, not on the FY2023–FY2024 lists and #55 in FY2025; down 9 since FY2021.
26	Mathematica Inc 2 awardees Top agencies SSA (Social Security Administration) USDA (Department of Agriculture) ED (Department of Education)	$18,435,859	0.6%	Rank history: #80 in FY2021, #19 in FY2023 and not on the FY2024–FY2025 lists; up 54 since FY2021.
27	Gartner, Inc. 2 awardees, including Personnel Decisions Research Institutes, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$18,428,489	0.6%	Rank history: #27 in FY2021, #25 in FY2023, #17 in FY2024 and #60 in FY2025; unchanged since FY2021.
28	Iqvia Inc. 2 awardees, including Iqvia Government Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$18,328,624	0.6%	Rank history: #37 in FY2021, #30 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
29	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$18,296,191	0.6%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 207 since FY2021.
30	Tetra Tech, Inc. 7 awardees, including Tetra TECH EC, Inc. and Tetra TECH International Inc. Zweigniederlassung Deutschland Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$17,781,901	0.6%	Rank history: #42 in FY2021, #27 in FY2023, #32 in FY2024 and #20 in FY2025; up 12 since FY2021.
31	AECOM 5 awardees, including AECOM Technical Services, Inc. and AECOM Italia S.P.A. Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security) Army (Department of the Army)	$17,750,669	0.6%	Rank history: not on the FY2021 list, #37 in FY2023, #82 in FY2024 and not on the FY2025 list; up 128 since FY2021.
32	The Boeing Company 8 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$16,283,420	0.6%	Rank history: #31 in FY2021, #56 in FY2023, #35 in FY2024 and not on the FY2025 list; down 1 since FY2021.
33	Couvillion Group LLC Top agencies DOI (Department of the Interior)	$16,223,580	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
34	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$15,979,933	0.5%	Rank history: not on the FY2021 list, #29 in FY2023, #19 in FY2024 and not on the FY2025 list; new.
35	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$15,135,696	0.5%	Rank history: #22 in FY2021, not on the FY2023 list, #25 in FY2024 and not on the FY2025 list; down 13 since FY2021.
36	Biobot Analytics Inc. Top agencies HHS (Department of Health and Human Services)	$14,893,250	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
37	American Institutes for Research In the Behavioral Sciences 2 awardees Top agencies ED (Department of Education) HHS (Department of Health and Human Services) NSF (National Science Foundation)	$14,744,702	0.5%	Rank history: #40 in FY2021, #67 in FY2023, #48 in FY2024 and not on the FY2025 list; up 3 since FY2021.
38	BAE Systems Technology Solutions & Services Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$13,546,377	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
39	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$13,545,516	0.5%	Rank history: #32 in FY2021, #43 in FY2023, #46 in FY2024 and #73 in FY2025; down 7 since FY2021.
40	General Dynamics Corporation 7 awardees, including General Dynamics Mission Systems, Inc., General Dynamics Information Technology, Inc. and General Dynamics-Ots, Inc. Top agencies USAF (Department of the Air Force) ED (Department of Education) Navy (Department of the Navy)	$13,361,946	0.5%	Rank history: #74 in FY2021, #22 in FY2023, #33 in FY2024 and #44 in FY2025; up 34 since FY2021.
41	ASR Analytics, LLC Top agencies Treasury (Department of the Treasury)	$13,024,452	0.4%	Rank history: #35 in FY2021, #39 in FY2023, #28 in FY2024 and #33 in FY2025; down 6 since FY2021.
42	UnitedHealth Group Incorporated 2 awardees, including The Lewin Group, Inc. and Optuminsight Life Sciences Inc. Top agencies HHS (Department of Health and Human Services)	$12,746,254	0.4%	Rank history: #19 in FY2021, #55 in FY2023, #63 in FY2024 and not on the FY2025 list; down 23 since FY2021.
43	Environmental Management & Planning Solutions LLC Top agencies DOI (Department of the Interior)	$12,372,973	0.4%	Rank history: #64 in FY2021, #32 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2021.
44	RTX Corporation 5 awardees, including Raytheon Company, Hamilton Sundstrand Space Systems International, Inc. and Everfox LLC Top agencies Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$11,558,235	0.4%	Rank history: #36 in FY2021, #21 in FY2023, #44 in FY2024 and not on the FY2025 list; down 8 since FY2021.
45	Healthverity Inc. Top agencies HHS (Department of Health and Human Services)	$10,111,772	0.3%	Rank history: #54 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
46	Emory University Top agencies HHS (Department of Health and Human Services)	$9,995,338	0.3%	Rank history: not on the FY2021 list, #9 in FY2023, #58 in FY2024 and #34 in FY2025; up 146 since FY2021.
47	Olgoonik Corporation 2 awardees, including Olgoonik Solutions LLC and Olgoonik Enterprises, LLC Top agencies DOS (Department of State) HHS (Department of Health and Human Services)	$9,299,006	0.3%	Rank history: #45 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
48	Cssi, LLC Top agencies DOT (Department of Transportation)	$8,760,214	0.3%	Rank history: #38 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
49	Baylor College of Medicine Top agencies HHS (Department of Health and Human Services)	$8,376,778	0.3%	Rank history: #57 in FY2021, #38 in FY2023, #34 in FY2024 and #57 in FY2025; up 8 since FY2021.
50	National Opinion Research Center Top agencies DHRA (Defense Human Resources Activity) NSF (National Science Foundation) HHS (Department of Health and Human Services)	$7,973,493	0.3%	Rank history: not on the FY2021 list, #40 in FY2023, #38 in FY2024 and #47 in FY2025; up 53 since FY2021.
51	L3Harris Technologies, Inc. 3 awardees, including L3 Technologies, Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force)	$7,972,640	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 182 since FY2021.
52	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$7,600,478	0.3%	Rank history: #46 in FY2021, #83 in FY2023, #51 in FY2024 and #46 in FY2025; down 6 since FY2021.
53	Afognak Native Corporation Through Shields Point LLC Top agencies DOJ (Department of Justice)	$7,382,548	0.2%	Rank history: #52 in FY2021, #59 in FY2023, #59 in FY2024 and not on the FY2025 list; down 1 since FY2021.
54	University of Washington 3 awardees Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) DOI (Department of the Interior)	$7,310,528	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 47 since FY2021.
55	State of California Controllers Office 13 awardees, including University of California, Davis, The Regents of the University of California. San Francisco and University of California, San Diego Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$7,170,180	0.2%	Rank history: #41 in FY2021, #52 in FY2023, #70 in FY2024 and not on the FY2025 list; down 14 since FY2021.
56	Gomez Research Associates Inc. Top agencies Navy (Department of the Navy)	$7,012,246	0.2%	Rank history: #49 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
57	The Chenega Corporation 2 awardees, including Chenega Analytic Business Solutions, LLC and Chenega Integrated Security Solutions, LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$6,996,689	0.2%	Rank history: #71 in FY2021 and not on the FY2023–FY2025 lists; up 14 since FY2021.
58	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$6,839,281	0.2%	Rank history: #34 in FY2021, #61 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2021.
59	New South Associates, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) GSA (General Services Administration)	$6,750,646	0.2%	Rank history: #51 in FY2021, #70 in FY2023, #60 in FY2024 and #43 in FY2025; down 8 since FY2021.
60	Honeywell International Inc. 2 awardees Top agencies USAF (Department of the Air Force) GSA (General Services Administration) NASA (National Aeronautics and Space Administration)	$6,745,396	0.2%	Rank history: #53 in FY2021, #54 in FY2023, not on the FY2024 list and #18 in FY2025; down 7 since FY2021.
61	The Medical College of Wisconsin, Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$6,651,854	0.2%	Rank history: #78 in FY2021, #77 in FY2023, #77 in FY2024 and #66 in FY2025; up 17 since FY2021.
62	Koniag Management Solutions LLC Top agencies DHA (Defense Health Agency)	$6,559,539	0.2%	Rank history: #48 in FY2021, #98 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2021.
63	Pb&A / CSS JV, Llc. Top agencies EPA (Environmental Protection Agency)	$6,427,248	0.2%	Rank history: not on the FY2021 list, #68 in FY2023 and not on the FY2024–FY2025 lists; new.
64	Information Management Services, Inc. Top agencies HHS (Department of Health and Human Services)	$6,397,547	0.2%	Rank history: #68 in FY2021, #57 in FY2023, #67 in FY2024 and #78 in FY2025; up 4 since FY2021.
65	Kpmg L.L.P. 2 awardees Top agencies DOL (Department of Labor) DOT (Department of Transportation) Navy (Department of the Navy)	$6,384,517	0.2%	Rank history: #29 in FY2021, #71 in FY2023 and not on the FY2024–FY2025 lists; down 36 since FY2021.
66	Lynker Corporation Top agencies Commerce (Department of Commerce)	$6,363,322	0.2%	Rank history: #63 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
67	Nova Global Supply and Services LLC 2 awardees, including Valiant Global Defense Services Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$6,313,305	0.2%	Rank history: #43 in FY2021 and not on the FY2023–FY2025 lists; down 24 since FY2021.
68	Mid Atlantic Technical and Executive Consulting, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$6,291,067	0.2%	Rank history: #95 in FY2021, #51 in FY2023, #45 in FY2024 and #75 in FY2025; up 27 since FY2021.
69	Cooper Zietz Engineers, Inc. Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$6,274,602	0.2%	Rank history: #87 in FY2021, #60 in FY2023, #84 in FY2024 and not on the FY2025 list; up 18 since FY2021.
70	Systems Planning and Analysis, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$6,253,798	0.2%	Rank history: #59 in FY2021 and not on the FY2023–FY2025 lists; down 11 since FY2021.
71	The Tatitlek Corporation 2 awardees, including Tatitlek Federal Services LLC and Tatitlek Technologies, LLC Top agencies DOS (Department of State)	$6,200,989	0.2%	Rank history: #58 in FY2021, #72 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2021.
72	Noresco LLC Top agencies DHS (Department of Homeland Security) DOE (Department of Energy) Treasury (Department of the Treasury)	$6,182,589	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 67 since FY2021.
73	Jacobs Engineering Group Inc. 2 awardees, including Amentum Technology, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) GSA (General Services Administration)	$6,117,073	0.2%	Rank history: not on the FY2021 list, #79 in FY2023 and not on the FY2024–FY2025 lists; up 386 since FY2021.
74	Space Systems/Loral LLC 2 awardees, including Lanteris Space LLC and Vantor Inc. Top agencies Commerce (Department of Commerce)	$5,957,119	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
75	CVS Health Corporation Through CVS Healthspire Payor & Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$5,803,464	0.2%	Rank history: #66 in FY2021, #84 in FY2023, not on the FY2024 list and #62 in FY2025; down 9 since FY2021.
76	Summit Consulting LLC Top agencies Treasury (Department of the Treasury) HUD (Department of Housing and Urban Development) DOL (Department of Labor)	$5,754,341	0.2%	Rank history: #61 in FY2021, #76 in FY2023, not on the FY2024 list and #87 in FY2025; down 15 since FY2021.
77	Native Strategies, LLC Top agencies DOI (Department of the Interior)	$5,713,499	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
78	Southwest Research Institute 2 awardees, including Signature Science LLC Top agencies NRC (Nuclear Regulatory Commission) DHS (Department of Homeland Security) CSB (Chemical Safety and Hazard Investigation Board)	$5,641,858	0.2%	Rank history: #47 in FY2021, #75 in FY2023 and not on the FY2024–FY2025 lists; down 31 since FY2021.
79	Bureau Van Dijk Electronic Publishing Inc. Top agencies Treasury (Department of the Treasury) OSD (Office of the Secretary of Defense)	$5,574,838	0.2%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
80	Natives of Kodiak, Incorporated Through Environmental Assessment Services, LLC Top agencies Army (Department of the Army)	$5,477,746	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 119 since FY2021.
81	Techlaw, Inc. Through Techlaw Consultants Inc. Top agencies EPA (Environmental Protection Agency)	$5,409,499	0.2%	Rank history: not on the FY2021 list, #95 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2021.
82	WSP USA Solutions Inc. Top agencies DOE (Department of Energy) DOI (Department of the Interior)	$5,147,711	0.2%	Rank history: #89 in FY2021, #100 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2021.
83	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force)	$5,054,082	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
84	Universal Technical Resource Services Inc. Top agencies USAF (Department of the Air Force)	$5,048,190	0.2%	Rank history: not on the FY2021 list, #82 in FY2023, #78 in FY2024 and #65 in FY2025; new.
85	Industrial Economics Inc. Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) DHS (Department of Homeland Security)	$4,907,847	0.2%	Rank history: not on the FY2021 list, #97 in FY2023 and not on the FY2024–FY2025 lists; up 32 since FY2021.
86	Paleowest LLC Top agencies DOI (Department of the Interior) Navy (Department of the Navy) USDA (Department of Agriculture)	$4,900,280	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 41 since FY2021.
87	Ahtna, Incorporated 3 awardees, including Ahtna Global LLC and Ahtna Logistics, LLC Top agencies Army (Department of the Army)	$4,859,622	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 57 since FY2021.
88	Swca, Incorporated 3 awardees Top agencies DOI (Department of the Interior)	$4,849,709	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 124 since FY2021.
89	Mriglobal Top agencies DOD (Department of Defense) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$4,731,745	0.2%	Rank history: #84 in FY2021 and not on the FY2023–FY2025 lists; down 5 since FY2021.
90	Xtec, Incorporated Top agencies HHS (Department of Health and Human Services)	$4,678,595	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
91	ABM Industries Inc. Through ABM Facility Support Services, LLC Top agencies GSA (General Services Administration)	$4,643,213	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 206 since FY2021.
92	Groundswell Corporation Top agencies DOT (Department of Transportation)	$4,639,172	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #66 in FY2024 and #82 in FY2025; up 22 since FY2021.
93	Group W Inc. Top agencies Navy (Department of the Navy)	$4,501,296	0.2%	Rank history: #69 in FY2021, not on the FY2023 list, #61 in FY2024 and #63 in FY2025; down 24 since FY2021.
94	ABT Global LLC 2 awardees Top agencies SSA (Social Security Administration) ED (Department of Education) HUD (Department of Housing and Urban Development)	$4,486,053	0.2%	Rank history: #23 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; down 71 since FY2021.
95	Sag Corporation Top agencies VA (Department of Veterans Affairs)	$4,419,272	0.1%	Rank history: #83 in FY2021, not on the FY2023 list, #92 in FY2024 and not on the FY2025 list; down 12 since FY2021.
96	Kgsne JV II LLC Top agencies EPA (Environmental Protection Agency)	$4,300,000	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #80 in FY2025; new.
97	Gryphon Technologies, Inc. Through Gryphon Technologies, L.C. Top agencies USAF (Department of the Air Force)	$4,257,941	0.1%	Rank history: #85 in FY2021, not on the FY2023 list, #97 in FY2024 and not on the FY2025 list; down 12 since FY2021.
98	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense)	$4,174,220	0.1%	Rank history: #97 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
99	Francisco Partners Management Through Everfox LLC Top agencies USAF (Department of the Air Force)	$4,119,190	0.1%	Rank history: #72 in FY2021 and not on the FY2023–FY2025 lists; down 27 since FY2021.
100	Source Healthcare Analytics LLC Top agencies HHS (Department of Health and Human Services)	$4,044,044	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.

Rankings for the codes under PSC B

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 $2.96 billion 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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