Top 100 Contractors in PSC R499: Other Professional Services, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Boeing Company 7 awardees, including Boeing Sikorsky Aircraft Support, LLC and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$2,363,623,707	8.1%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Booz Allen Hamilton Holding Corporation 4 awardees, including Booz Allen Hamilton Inc. and IAN Evan & Alexander Corp Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$1,932,061,103	6.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$1,168,123,719	4.0%	Rank history: not on the FY2021 list, #4 in FY2022, #4 in FY2023, #5 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4	Maximus Federal Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$867,107,630	3.0%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #4 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Science Applications International Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$825,468,256	2.8%	Rank history: #11 in FY2021, #7 in FY2022, #6 in FY2023, #9 in FY2024 and #8 in FY2025; up 5 since Jul 2024–Jun 2025.
6	General Dynamics Corporation 9 awardees, including General Dynamics Information Technology, Inc., General Dynamics Land Systems Inc. and General Dynamics One Source LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$777,042,070	2.7%	Rank history: #6 in FY2021, #11 in FY2022, #5 in FY2023, #3 in FY2024 and #5 in FY2025; down 2 since Jul 2024–Jun 2025.
7	Deloitte 3 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$752,080,574	2.6%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #6 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$737,680,596	2.5%	Rank history: #89 in FY2021, #18 in FY2022, #10 in FY2023, #8 in FY2024 and #7 in FY2025; down 1 since Jul 2024–Jun 2025.
9	V2X, Inc. 2 awardees, including V2X Aerospace LLC and V2X Systems LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$608,809,032	2.1%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; up 16 since Jul 2024–Jun 2025.
10	Guidehouse Inc. 11 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DOS (Department of State)	$570,759,074	2.0%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #15 in FY2025; up 36 since Jul 2024–Jun 2025.
11	Leidos Holdings, Inc. 10 awardees, including Leidos, Inc., Hanford Mission Integration Solutions, LLC and 1901 Group, LLC Top agencies Army (Department of the Army) DOE (Department of Energy) HHS (Department of Health and Human Services)	$505,036,382	1.7%	Rank history: #62 in FY2021, #54 in FY2022, #20 in FY2023, #13 in FY2024 and #11 in FY2025; unchanged since Jul 2024–Jun 2025.
12	Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) PBGC (Pension Benefit Guaranty Corporation)	$452,159,743	1.5%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list, #70 in FY2024 and #16 in FY2025; up 9 since Jul 2024–Jun 2025.
13	CACI International Inc. 6 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci Idt, LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture) DTRA (Defense Threat Reduction Agency)	$408,273,343	1.4%	Rank history: #8 in FY2021, #6 in FY2022, #8 in FY2023, #10 in FY2024 and #9 in FY2025; down 4 since Jul 2024–Jun 2025.
14	Peraton Inc. 3 awardees, including Safeguard Services LLC and Peraton Enterprise Solutions LLC Top agencies DOT (Department of Transportation) Army (Department of the Army) HHS (Department of Health and Human Services)	$359,199,095	1.2%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #10 in FY2025; down 2 since Jul 2024–Jun 2025.
15	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) OSD (Office of the Secretary of Defense)	$336,488,826	1.2%	Rank history: not on the FY2021 list, #26 in FY2022, #25 in FY2023, #20 in FY2024 and #21 in FY2025; up 3 since Jul 2024–Jun 2025.
16	Accenture Federal Services LLC 4 awardees, including Cognosante MVH LLC and Cognosante, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$324,923,403	1.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #13 in FY2025; down 3 since Jul 2024–Jun 2025.
17	Amentum Holdings, Inc. 9 awardees, including Amentum Services, Inc., Amentum Technology, Inc. and Dyncorp International LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Navy (Department of the Navy)	$305,197,725	1.0%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and #23 in FY2025; up 6 since Jul 2024–Jun 2025.
18	Serco Inc Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$255,171,462	0.9%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #18 in FY2025; down 3 since Jul 2024–Jun 2025.
19	Lockheed Martin Corporation 8 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force)	$227,849,993	0.8%	Rank history: #46 in FY2021, #30 in FY2022, #47 in FY2023, #38 in FY2024 and #42 in FY2025; up 15 since Jul 2024–Jun 2025.
20	Clark Construction LLC Through Clark Construction Group LLC Top agencies Army (Department of the Army)	$212,693,510	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	Family Health International Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$203,177,262	0.7%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; up 48 since Jul 2024–Jun 2025.
22	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy) Navy (Department of the Navy)	$193,481,229	0.7%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #22 in FY2024 and #30 in FY2025; up 22 since Jul 2024–Jun 2025.
23	Parsons Corporation 4 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Xator LLC Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Army (Department of the Army)	$180,609,011	0.6%	Rank history: #17 in FY2021, #17 in FY2022, #12 in FY2023, #15 in FY2024 and #22 in FY2025; down 7 since Jul 2024–Jun 2025.
24	ManTech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Unison Software Inc. Top agencies USCYBERCOM (Department of Defense Cyber Command) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$178,261,404	0.6%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 11 since Jul 2024–Jun 2025.
25	BCG Federal Corp. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$170,772,836	0.6%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #19 in FY2025; down 5 since Jul 2024–Jun 2025.
26	Soldierpoint Digital Health, LLC Top agencies VA (Department of Veterans Affairs)	$143,747,827	0.5%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
27	RTX Corporation 15 awardees, including Raytheon Company and Goodrich Corporation Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) WHS (DOD Washington Headquarters Service)	$141,748,907	0.5%	Rank history: #12 in FY2021, #43 in FY2022, #31 in FY2023, #33 in FY2024 and #28 in FY2025; up 18 since Jul 2024–Jun 2025.
28	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$125,553,984	0.4%	Rank history: #20 in FY2021, #28 in FY2022, #26 in FY2023, #18 in FY2024 and #38 in FY2025; down 9 since Jul 2024–Jun 2025.
29	International Business Machines Corporation 4 awardees Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$125,300,017	0.4%	Rank history: #30 in FY2021, #16 in FY2022, #30 in FY2023, #30 in FY2024 and #26 in FY2025; down 2 since Jul 2024–Jun 2025.
30	Signature Choice II, LLC Top agencies VA (Department of Veterans Affairs)	$119,758,352	0.4%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and not on the FY2025 list; up 52 since Jul 2024–Jun 2025.
31	Govcio, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$111,243,170	0.4%	Rank history: not on the FY2021 list, #36 in FY2022, #62 in FY2023, #60 in FY2024 and #39 in FY2025; up 21 since Jul 2024–Jun 2025.
32	KBR Wyle Services LLC 4 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DOI (Department of the Interior)	$108,715,072	0.4%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #24 in FY2025; down 6 since Jul 2024–Jun 2025.
33	Systems Planning and Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security) DARPA (Defense Advanced Research Projects Agency)	$98,787,198	0.3%	Rank history: #94 in FY2021, #83 in FY2022, #86 in FY2023, not on the FY2024 list and #70 in FY2025; up 101 since Jul 2024–Jun 2025.
34	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) USSOCOM (United States Special Operations Command) Commerce (Department of Commerce)	$95,202,677	0.3%	Rank history: not on the FY2021 list, #72 in FY2022, #75 in FY2023, #95 in FY2024 and #51 in FY2025; up 43 since Jul 2024–Jun 2025.
35	Arctic Slope Regional Corporation 13 awardees, including Agile Decision Sciences, LLC, Broadleaf, Inc. and Asrc Federal Technology Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Commerce (Department of Commerce)	$93,627,971	0.3%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #36 in FY2025; up 2 since Jul 2024–Jun 2025.
36	Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$93,277,894	0.3%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; up 7 since Jul 2024–Jun 2025.
37	E.f. Kearney, Limited 2 awardees, including Kearney & Company, P.C. Top agencies USAF (Department of the Air Force) GSA (General Services Administration) VA (Department of Veterans Affairs)	$92,233,207	0.3%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and not on the FY2025 list; up 28 since Jul 2024–Jun 2025.
38	Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$86,073,499	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #33 in FY2025; down 8 since Jul 2024–Jun 2025.
39	The GEO Group, Inc. Top agencies DOJ (Department of Justice)	$83,377,469	0.3%	Rank history: #34 in FY2021, #32 in FY2022, #38 in FY2023, #49 in FY2024 and #41 in FY2025; up 8 since Jul 2024–Jun 2025.
40	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$83,101,620	0.3%	Rank history: #64 in FY2021, #46 in FY2022, #39 in FY2023, #47 in FY2024 and #35 in FY2025; down 8 since Jul 2024–Jun 2025.
41	Apogee Engineering, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$81,971,166	0.3%	Rank history: #56 in FY2021, #71 in FY2022, not on the FY2023 list, #77 in FY2024 and #47 in FY2025; up 12 since Jul 2024–Jun 2025.
42	Asgn Incorporated Through ECS Federal, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$79,414,627	0.3%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 17 since Jul 2024–Jun 2025.
43	Semanticbits LLC 4 awardees, including ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) NSF (National Science Foundation) EPA (Environmental Protection Agency)	$76,127,481	0.3%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #46 in FY2025; down 4 since Jul 2024–Jun 2025.
44	The Timken Company Through CGI Federal Inc. Top agencies Navy (Department of the Navy) DOS (Department of State) DOI (Department of the Interior)	$72,930,569	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	Kpmg LLP Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DOS (Department of State)	$72,659,603	0.2%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #58 in FY2025; down 7 since Jul 2024–Jun 2025.
46	Miracle Systems LLC Top agencies DHS (Department of Homeland Security)	$71,166,547	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023, #80 in FY2024 and #50 in FY2025; up 35 since Jul 2024–Jun 2025.
47	Schafer Government Services, LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$70,253,968	0.2%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; up 44 since Jul 2024–Jun 2025.
48	Black Canyon Consulting LLC Top agencies HHS (Department of Health and Human Services)	$68,204,127	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023, #67 in FY2024 and #44 in FY2025; up 2 since Jul 2024–Jun 2025.
49	Strategic Analysis, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) WHS (DOD Washington Headquarters Service)	$67,177,046	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023, #55 in FY2024 and #34 in FY2025; down 13 since Jul 2024–Jun 2025.
50	Analytic Services Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$66,630,070	0.2%	Rank history: not on the FY2021 list, #90 in FY2022, #79 in FY2023, #71 in FY2024 and #61 in FY2025; up 11 since Jul 2024–Jun 2025.
51	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$66,442,899	0.2%	Rank history: #29 in FY2021, #33 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	Equifax Workforce Solutions LLC Top agencies SSA (Social Security Administration) DOJ (Department of Justice) USDA (Department of Agriculture)	$65,447,375	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 23 since Jul 2024–Jun 2025.
53	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$64,231,489	0.2%	Rank history: #88 in FY2021, #80 in FY2022, not on the FY2023–FY2024 lists and #48 in FY2025; up 10 since Jul 2024–Jun 2025.
54	Hendall Inc. Top agencies HHS (Department of Health and Human Services)	$63,418,024	0.2%	Rank history: not on the FY2021 list, #92 in FY2022, #87 in FY2023, #99 in FY2024 and not on the FY2025 list; up 34 since Jul 2024–Jun 2025.
55	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$63,413,847	0.2%	Rank history: #50 in FY2021, #56 in FY2022, #54 in FY2023, #57 in FY2024 and #55 in FY2025; down 4 since Jul 2024–Jun 2025.
56	Maveris LLC Top agencies VA (Department of Veterans Affairs)	$62,823,248	0.2%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #52 in FY2025; up 8 since Jul 2024–Jun 2025.
57	Deep Mile Networks LLC Top agencies DHA (Defense Health Agency)	$61,006,453	0.2%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023, #54 in FY2024 and #40 in FY2025; down 8 since Jul 2024–Jun 2025.
58	Acentra Health LLC Top agencies DHS (Department of Homeland Security) DOL (Department of Labor)	$53,670,019	0.2%	Rank history: not on the FY2021–FY2025 lists; up 377 since Jul 2024–Jun 2025.
59	Goldbelt Professional Services, LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$52,952,075	0.2%	Rank history: not on the FY2021–FY2025 lists; up 194 since Jul 2024–Jun 2025.
60	Threat Tec, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USSOCOM (United States Special Operations Command)	$51,318,485	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, not on the FY2024 list and #77 in FY2025; up 34 since Jul 2024–Jun 2025.
61	Tactica Solutions LLC Top agencies Army (Department of the Army)	$49,787,157	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 18 since Jul 2024–Jun 2025.
62	Astrion Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$48,828,734	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 12 since Jul 2024–Jun 2025.
63	Choctaw Premier Services LLC Top agencies Army (Department of the Army)	$47,518,401	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 63 since Jul 2024–Jun 2025.
64	Augustine Consulting Inc. Top agencies Army (Department of the Army)	$47,196,770	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 75 since Jul 2024–Jun 2025.
65	C2 Alaska, LLC Top agencies SEC (Securities and Exchange Commission) SSA (Social Security Administration) USAF (Department of the Air Force)	$47,017,200	0.2%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 59 since Jul 2024–Jun 2025.
66	Centerra Group, LLC Top agencies DOE (Department of Energy)	$46,713,287	0.2%	Rank history: not on the FY2021–FY2025 lists; up 122 since Jul 2024–Jun 2025.
67	C2C Innovative Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$46,620,846	0.2%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 11 since Jul 2024–Jun 2025.
68	Celeen LLC Top agencies DOD (Department of Defense) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$46,496,299	0.2%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #74 in FY2025; up 87 since Jul 2024–Jun 2025.
69	Ameresco Inc. 2 awardees, including Ameresco Select, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$45,453,155	0.2%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 49 since Jul 2024–Jun 2025.
70	Securitas Electronic Security Inc. Through Paragon Systems Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$45,310,744	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 26 since Jul 2024–Jun 2025.
71	Jones Lang Lasalle Americas, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DOS (Department of State)	$44,393,088	0.2%	Rank history: not on the FY2021–FY2025 lists; up 151 since Jul 2024–Jun 2025.
72	Ardent Group, LLC Top agencies DHS (Department of Homeland Security)	$44,356,659	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Cherokee Nation 9 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Nation Integrated Health, L.L.C. and Cherokee United Services, L.L.C. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$44,063,881	0.2%	Rank history: #63 in FY2021, #64 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
74	Riverside Research Institute Top agencies USAF (Department of the Air Force)	$43,682,263	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 42 since Jul 2024–Jun 2025.
75	System High Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$41,968,580	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, #88 in FY2024 and #65 in FY2025; up 5 since Jul 2024–Jun 2025.
76	Mckinsey & Company, Inc. Washington D.c. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$41,722,895	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 118 since Jul 2024–Jun 2025.
77	Mathematica Inc. Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$41,321,294	0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and not on the FY2025 list; up 9 since Jul 2024–Jun 2025.
78	Veracity Engineering LLC Top agencies DOT (Department of Transportation)	$41,289,994	0.1%	Rank history: not on the FY2021–FY2025 lists; up 59 since Jul 2024–Jun 2025.
79	Johns Hopkins University 3 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC and The Johns Hopkins Health System Corporation Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) HHS (Department of Health and Human Services)	$40,977,351	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$40,771,046	0.1%	Rank history: #75 in FY2021, #68 in FY2022, #77 in FY2023, #86 in FY2024 and #84 in FY2025; up 15 since Jul 2024–Jun 2025.
81	Centene Corporation Through Magellan Federal, Inc. Top agencies DODEA (Department of Defense Education Activity) Peace Corps HHS (Department of Health and Human Services)	$40,087,156	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Concept Solutions LLC Top agencies DOT (Department of Transportation)	$39,693,502	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #98 in FY2024 and #69 in FY2025; up 10 since Jul 2024–Jun 2025.
83	Sapient Corporation Through Plowshare Group, Inc. Top agencies HHS (Department of Health and Human Services)	$39,000,000	0.1%	Rank history: #43 in FY2021, #48 in FY2022, #43 in FY2023, #58 in FY2024 and #82 in FY2025; down 25 since Jul 2024–Jun 2025.
84	Coventbridge (USA) LLC Top agencies HHS (Department of Health and Human Services)	$38,206,767	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 30 since Jul 2024–Jun 2025.
85	Cbeyondata LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$37,951,545	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 72 since Jul 2024–Jun 2025.
86	Great Hill Solutions, LLC Top agencies DOS (Department of State) DSCA (Defense Security Cooperation Agency) HHS (Department of Health and Human Services)	$37,912,798	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, #68 in FY2024 and #63 in FY2025; up 97 since Jul 2024–Jun 2025.
87	Qualx, LLC Top agencies WHS (DOD Washington Headquarters Service) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$37,566,937	0.1%	Rank history: not on the FY2021–FY2025 lists; up 48 since Jul 2024–Jun 2025.
88	Digiflight Incorporated Top agencies Army (Department of the Army)	$36,378,687	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, not on the FY2024 list and #89 in FY2025; up 56 since Jul 2024–Jun 2025.
89	Nana Regional Corporation, Inc. 7 awardees, including Akima Systems Engineering LLC, Akima Global Logistics, LLC and Akima Data Management LLC Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) DHS (Department of Homeland Security)	$35,926,747	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	PAL Technologies Inc Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$35,824,876	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	ELB Services LLC Top agencies USAF (Department of the Air Force)	$35,342,204	0.1%	Rank history: not on the FY2021–FY2025 lists; up 85 since Jul 2024–Jun 2025.
92	Nika Technologies Inc. Top agencies Army (Department of the Army)	$35,135,802	0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and not on the FY2025 list; up 8 since Jul 2024–Jun 2025.
93	Techsource, LLC Top agencies DOE (Department of Energy)	$35,116,166	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; up 13 since Jul 2024–Jun 2025.
94	Prkk LLC Top agencies USAF (Department of the Air Force)	$35,006,776	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 117 since Jul 2024–Jun 2025.
95	International Development & Resources, Inc. Top agencies Army (Department of the Army)	$34,985,452	0.1%	Rank history: not on the FY2021–FY2025 lists; up 107 since Jul 2024–Jun 2025.
96	Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration)	$34,812,390	0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 5 since Jul 2024–Jun 2025.
97	Valiant Global Defense Services Inc. Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$34,404,003	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; down 40 since Jul 2024–Jun 2025.
98	Change Healthcare Operations, LLC Top agencies VA (Department of Veterans Affairs)	$33,772,036	0.1%	Rank history: not on the FY2021–FY2025 lists; up 146 since Jul 2024–Jun 2025.
99	Linquest Corporation Top agencies USAF (Department of the Air Force)	$33,125,600	0.1%	Rank history: not on the FY2021–FY2025 lists; up 161 since Jul 2024–Jun 2025.
100	Kaiva Strategies, LLC Top agencies HHS (Department of Health and Human Services)	$33,086,482	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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 $29.2 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Jul 2024–Jun 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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