Top 100 Contractors in PSC U099: Other Education and Training Services, FY2021

Name: Top 100 Contractors in PSC U099: Other Education and Training Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 42% of FY2021 PSC U099 contract dollars

Contract obligations: $1,236,316,439 Net of deobligations, by contracts coded PSC U099
Contractors: 1,179 Parent companies with an obligation
Largest contractor: Oak Ridge Associated Universities, Incorporated $271 million, 20.6% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Oak Ridge Associated Universities, Incorporated Top agencies DOE (Department of Energy)	$271,019,641	20.6%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	CAE Inc. 6 awardees, including CAE Usa, Inc., CAE Simuflite, Inc. and Presagis USA Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$45,670,467	3.5%	Rank history: #2 in FY2022, #3 in FY2023, #5 in FY2024 and #32 in FY2025; up 2 since FY2020.
3	Berkshire Hathaway Inc. 2 awardees, including Flightsafety Defense Corporation and Flightsafety International Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOT (Department of Transportation)	$35,461,531	2.7%	Rank history: #4 in FY2022, #5 in FY2023, #10 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Institute of International Education Inc. Top agencies DHRA (Defense Human Resources Activity)	$33,050,000	2.5%	Rank history: #5 in FY2022, #2 in FY2023, #2 in FY2024 and #6 in FY2025; new, not ranked in FY2020.
5	PAE Government Services, Inc. 4 awardees, including PAE Aviation and Technical Services LLC Top agencies DOS (Department of State) Navy (Department of the Navy)	$30,912,224	2.4%	Rank history: #3 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
6	Oak Grove Technologies, LLC Top agencies USSOCOM (United States Special Operations Command) DHS (Department of Homeland Security)	$29,645,271	2.3%	Rank history: #8 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
7	L3Harris Technologies, Inc. 3 awardees, including CAE USA Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$29,323,133	2.2%	Rank history: not on the FY2022 list, #38 in FY2023, #9 in FY2024 and #47 in FY2025; down 2 since FY2020.
8	Aitc-Five Domains Joint Venture,Llc Top agencies Army (Department of the Army)	$29,028,304	2.2%	Rank history: not on the FY2022 list, #80 in FY2023, #88 in FY2024 and #41 in FY2025; new, not ranked in FY2020.
9	ICF International, Inc. 2 awardees, including ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) HUD (Department of Housing and Urban Development)	$27,582,712	2.1%	Rank history: #7 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
10	Kratos Defense & Security Solutions, Inc. Through Kratos Technology & Training Solutions, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$21,768,740	1.7%	Rank history: #89 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
11	ESG Aerosystems, Inc. Top agencies Navy (Department of the Navy)	$20,966,939	1.6%	Rank history: #27 in FY2022, #54 in FY2023, #76 in FY2024 and #54 in FY2025; new, not ranked in FY2020.
12	STG International, Inc. Top agencies HHS (Department of Health and Human Services)	$17,731,468	1.4%	Rank history: #10 in FY2022, #13 in FY2023, #15 in FY2024 and #11 in FY2025; up 3 since FY2020.
13	Crew Training International, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$17,267,525	1.3%	Rank history: #51 in FY2022, not on the FY2023–FY2024 lists and #49 in FY2025; down 2 since FY2020.
14	Tyonek Native Corporatio Through Tyonek Global Services LLC Top agencies USAF (Department of the Air Force)	$16,465,486	1.3%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
15	Creek Technologies Company Top agencies Navy (Department of the Navy)	$14,617,410	1.1%	Rank history: not on the FY2022–FY2023 lists, #33 in FY2024 and #61 in FY2025; up 4 since FY2020.
16	Science Applications International Corporation 2 awardees, including Engility Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) HHS (Department of Health and Human Services)	$14,438,118	1.1%	Rank history: #12 in FY2022, #16 in FY2023, #8 in FY2024 and #53 in FY2025; down 6 since FY2020.
17	Ids International, LLC Top agencies DOS (Department of State)	$14,214,802	1.1%	Rank history: not on the FY2022–FY2024 lists and #78 in FY2025; down 5 since FY2020.
18	Allen Corporation of America, Inc. Top agencies DOT (Department of Transportation)	$13,337,020	1.0%	Rank history: #15 in FY2022, #17 in FY2023, #22 in FY2024 and #17 in FY2025; up 6 since FY2020.
19	The Masy Group LLC Top agencies DIA (Defense Intelligence Agency) Army (Department of the Army) HHS (Department of Health and Human Services)	$13,268,464	1.0%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
20	R3 Strategic Support Group Inc. Top agencies Navy (Department of the Navy)	$12,592,938	1.0%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
21	Linxx Global Solutions, LLC Top agencies Navy (Department of the Navy)	$11,860,555	0.9%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
22	Nana Regional Corporation Inc Through Rivertech LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$11,571,798	0.9%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; up 116 since FY2020.
23	T3I, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command)	$11,437,645	0.9%	Rank history: #14 in FY2022, #15 in FY2023, #16 in FY2024 and #9 in FY2025; down 1 since FY2020.
24	Research Triangle Institute Top agencies USAID (US Agency for International Development) IMLS (The Institute of Museum and Library Services)	$11,109,369	0.8%	Rank history: #32 in FY2022, #21 in FY2023, #32 in FY2024 and #65 in FY2025; new, not ranked in FY2020.
25	Aleut Aerospace Engineering, LLC Top agencies USAF (Department of the Air Force)	$10,028,737	0.8%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
26	The Rockhill Group. Inc. Top agencies USAF (Department of the Air Force)	$9,729,333	0.7%	Rank history: #19 in FY2022, #23 in FY2023, #30 in FY2024 and #35 in FY2025; up 1 since FY2020.
27	Prevailance, Inc. Top agencies Navy (Department of the Navy)	$9,578,405	0.7%	Rank history: #23 in FY2022, #29 in FY2023, #34 in FY2024 and #36 in FY2025; down 11 since FY2020.
28	Tyonek Global Services LLC Top agencies USAF (Department of the Air Force)	$9,532,415	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	Nova Global Supply and Services LLC 2 awardees, including Valiant Global Defense Services Inc. Top agencies Navy (Department of the Navy) DFAS (Defense Finance and Accounting Service) USAF (Department of the Air Force)	$9,493,249	0.7%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; up 226 since FY2020.
30	Web Business Solutions Inc. Top agencies Navy (Department of the Navy)	$9,408,845	0.7%	Rank history: #24 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
31	Potawatomi Business Development Corp Through 1Prospect Technologies, LLC Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$9,373,801	0.7%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
32	Crytek GMBH Through Mass Virtual, Inc. Top agencies USAF (Department of the Air Force)	$9,047,954	0.7%	Rank history: #26 in FY2022, #6 in FY2023, #56 in FY2024 and not on the FY2025 list; down 2 since FY2020.
33	Victor 12, Inc. Top agencies VA (Department of Veterans Affairs)	$8,602,615	0.7%	Rank history: #25 in FY2022, #11 in FY2023, #13 in FY2024 and #15 in FY2025; down 1 since FY2020.
34	Advanced Technology Systems Inc. 2 awardees, including Salient Federal-Sgis Inc. Top agencies Navy (Department of the Navy)	$8,204,511	0.6%	Rank history: #6 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 295 since FY2020.
35	Corps Solutions LLC Top agencies Navy (Department of the Navy)	$7,298,696	0.6%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
36	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$7,239,934	0.6%	Rank history: #43 in FY2022, #37 in FY2023, #47 in FY2024 and #74 in FY2025; up 14 since FY2020.
37	Creative Associates International, Inc. Top agencies USAID (US Agency for International Development)	$7,106,349	0.5%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
38	Paragon Tec, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,906,876	0.5%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
39	Ops TECH Alliance, LLC Top agencies DHS (Department of Homeland Security)	$6,892,474	0.5%	Rank history: #29 in FY2022, #33 in FY2023, #31 in FY2024 and #26 in FY2025; up 4 since FY2020.
40	Aviation Training Consulting, LLC Top agencies Navy (Department of the Navy)	$6,654,824	0.5%	Rank history: #13 in FY2022, #19 in FY2023, #19 in FY2024 and #20 in FY2025; down 22 since FY2020.
41	Spectre Pursuit Group LLC Top agencies USAF (Department of the Air Force)	$6,582,745	0.5%	Rank history: #36 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
42	Calspan Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$6,366,952	0.5%	Rank history: #40 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
43	Summit Technologies, Inc. Top agencies Army (Department of the Army)	$5,855,208	0.4%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
44	Nonpublic Educational Services, Inc. Top agencies ED (Department of Education)	$5,591,982	0.4%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
45	Oscar Deuce LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$5,301,699	0.4%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
46	Techwerks LLC Top agencies VA (Department of Veterans Affairs)	$5,194,822	0.4%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
47	Skywarrior Flight Training Inc. Top agencies Navy (Department of the Navy)	$4,831,553	0.4%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.
48	Cape Fox Facilities Services, LLC Top agencies Army (Department of the Army)	$4,744,409	0.4%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
49	TAC Air Ops LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$4,695,479	0.4%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
50	Katmai Management Services LLC Top agencies DOS (Department of State)	$4,171,699	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Family Health International Top agencies HHS (Department of Health and Human Services)	$4,150,470	0.3%	Rank history: #60 in FY2022, #62 in FY2023, #63 in FY2024 and #57 in FY2025; unchanged since FY2020.
52	International Center for Language Studies, Inc. Top agencies Army (Department of the Army) USAID (US Agency for International Development) DOJ (Department of Justice)	$4,104,182	0.3%	Rank history: #55 in FY2022, #51 in FY2023, #73 in FY2024 and #73 in FY2025; down 4 since FY2020.
53	Miami Environmental & Energy Solutions LLC Top agencies HHS (Department of Health and Human Services)	$4,027,327	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Arcticom, LLC Top agencies USSOCOM (United States Special Operations Command)	$3,961,866	0.3%	Rank history: #52 in FY2022, not on the FY2023 list, #84 in FY2024 and #79 in FY2025; up 3 since FY2020.
55	University of New Mexico 2 awardees Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$3,875,412	0.3%	Rank history: #58 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
56	Gotham Government Services LLC Top agencies VA (Department of Veterans Affairs)	$3,528,198	0.3%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
57	University of Massachusetts Top agencies HHS (Department of Health and Human Services)	$3,465,739	0.3%	Rank history: #62 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
58	Naval Academy Athletic Association Top agencies Navy (Department of the Navy)	$3,381,302	0.3%	Rank history: #57 in FY2022, #64 in FY2023, not on the FY2024 list and #66 in FY2025; down 2 since FY2020.
59	Zero Point Inc. 2 awardees, including Point One Usa, LLC Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$3,292,075	0.3%	Rank history: not on the FY2022–FY2025 lists; down 46 since FY2020.
60	International Communications Associates Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice)	$3,034,329	0.2%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
61	Cox Subscriptions, Inc. Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$2,989,910	0.2%	Rank history: #65 in FY2022, #76 in FY2023, #79 in FY2024 and not on the FY2025 list; up 10 since FY2020.
62	Ibex It Business Experts LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$2,789,249	0.2%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
63	Macair Aviation LLC Top agencies USAF (Department of the Air Force)	$2,733,760	0.2%	Rank history: not on the FY2022–FY2024 lists and #77 in FY2025; up 10 since FY2020.
64	Chickasaw Strategic Pointe, LLC Top agencies Navy (Department of the Navy)	$2,728,113	0.2%	Rank history: #74 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
65	Franklin Covey Co. 2 awardees, including Franklin Covey Client Sales Inc. Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) DOI (Department of the Interior)	$2,695,575	0.2%	Rank history: #63 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
66	Phoenix Technology Solutions, L.L.C. Top agencies DISA (Defense Information Systems Agency)	$2,662,153	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
67	Pinnacle Solutions, LLC Top agencies Army (Department of the Army)	$2,648,914	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
68	Armada, Ltd. Top agencies DIA (Defense Intelligence Agency)	$2,610,010	0.2%	Rank history: not on the FY2022 list, #32 in FY2023, #45 in FY2024 and #45 in FY2025; down 13 since FY2020.
69	University of Virginia Darden School Foundation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,524,404	0.2%	Rank history: #75 in FY2022, #82 in FY2023, #85 in FY2024 and not on the FY2025 list; up 22 since FY2020.
70	A P Ventures, LLC Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$2,508,042	0.2%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
71	Vector Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command)	$2,430,472	0.2%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
72	A. Harold and Associates LLC Top agencies Navy (Department of the Navy)	$2,418,371	0.2%	Rank history: #56 in FY2022, #65 in FY2023, #72 in FY2024 and #72 in FY2025; up 17 since FY2020.
73	SGI Global LLC Top agencies DOS (Department of State)	$2,379,191	0.2%	Rank history: not on the FY2022–FY2025 lists; up 129 since FY2020.
74	Els, Inc. Top agencies Navy (Department of the Navy)	$2,377,691	0.2%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
75	Calibre Systems Inc. Top agencies Navy (Department of the Navy)	$2,365,539	0.2%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
76	Serco North America (Holdings) Inc 2 awardees, including Serco Inc. Top agencies DHS (Department of Homeland Security)	$2,349,006	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
77	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force)	$2,348,964	0.2%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
78	Cathexis, LLC Top agencies VA (Department of Veterans Affairs)	$2,347,983	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
79	Govsource Inc. Top agencies Army (Department of the Army)	$2,298,314	0.2%	Rank history: not on the FY2022–FY2025 lists; down 44 since FY2020.
80	Obsidian Solutions Group LLC Top agencies Navy (Department of the Navy)	$2,241,461	0.2%	Rank history: not on the FY2022–FY2025 lists; down 49 since FY2020.
81	Seneca Global Services LLC Top agencies DHS (Department of Homeland Security)	$2,203,087	0.2%	Rank history: #76 in FY2022, #72 in FY2023, #90 in FY2024 and not on the FY2025 list; up 32 since FY2020.
82	Zemitek LLC Top agencies USAID (US Agency for International Development)	$2,182,109	0.2%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
83	Amentum Services, Inc. Through URS Federal Services International, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$2,170,054	0.2%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
84	1Prospect Technologies, LLC Top agencies Army (Department of the Army)	$2,147,938	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Defense Technology, Inc. Top agencies USAF (Department of the Air Force)	$2,140,242	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Xtenfer Consulting Inc. Top agencies USAF (Department of the Air Force)	$2,131,829	0.2%	Rank history: not on the FY2022–FY2025 lists; down 48 since FY2020.
87	The Arbinger Company Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$2,057,887	0.2%	Rank history: not on the FY2022 list, #83 in FY2023, #65 in FY2024 and not on the FY2025 list; down 28 since FY2020.
88	Vanguard Communications of Falls Church Inc. Top agencies HHS (Department of Health and Human Services)	$2,022,491	0.2%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
89	Arizona State University Top agencies USAF (Department of the Air Force)	$2,017,332	0.2%	Rank history: #92 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
90	Eskillz Corp Top agencies Commerce (Department of Commerce) SBA (Small Business Administration) FTC (Federal Trade Commission)	$1,958,738	0.1%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
91	Skyline Aviation B.V. Top agencies USAF (Department of the Air Force)	$1,927,020	0.1%	Rank history: #93 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2020.
92	Shoulder 2 Shoulder Inc. Top agencies VA (Department of Veterans Affairs)	$1,884,182	0.1%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
93	SA Technical Services, Inc. Top agencies USAF (Department of the Air Force)	$1,866,816	0.1%	Rank history: #98 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
94	Creative Veteran Productions, LLC Top agencies VA (Department of Veterans Affairs)	$1,847,535	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
95	Resicum International LLC Top agencies USAF (Department of the Air Force)	$1,795,576	0.1%	Rank history: not on the FY2022–FY2024 lists and #50 in FY2025; up 59 since FY2020.
96	Business Management Research Associates, Inc. Top agencies USAID (US Agency for International Development) SBA (Small Business Administration) HHS (Department of Health and Human Services)	$1,699,732	0.1%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 57 since FY2020.
97	Airborne Support Group LLC Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) Army (Department of the Army)	$1,699,450	0.1%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
98	Indus Technology Inc. Top agencies Navy (Department of the Navy)	$1,675,242	0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
99	Ebsco Industries Inc. 3 awardees Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$1,667,695	0.1%	Rank history: not on the FY2022–FY2024 lists and #87 in FY2025; new, not ranked in FY2020.
100	Language Associates LLC Top agencies Army (Department of the Army)	$1,604,015	0.1%	Rank history: #86 in FY2022, #52 in FY2023, #46 in FY2024 and #28 in FY2025; down 4 since FY2020.

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100 of 1,179 contractors listed here. See the rest on GovTribe.

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 $1.31 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 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

Who were the top 10 PSC U099 contractors in FY2021?

1. Oak Ridge Associated Universities, Incorporated ($271M), 2. CAE Inc. ($45.7M), 3. Berkshire Hathaway Inc. ($35.5M), 4. Institute of International Education Inc. ($33.1M), 5. PAE Government Services, Inc. ($30.9M), 6. Oak Grove Technologies, LLC ($29.6M), 7. L3Harris Technologies, Inc. ($29.3M), 8. Aitc-Five Domains Joint Venture,Llc ($29M), 9. ICF International, Inc. ($27.6M), 10. Kratos Defense & Security Solutions, Inc. ($21.8M).

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