Top 100 Contractors in NAICS 541715: Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology), FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 24 awardees, including Sikorsky Aircraft Corporation Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$5,413,205,777	11.2%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Fluor Corporation Through Fluor Marine Propulsion, LLC Top agencies Navy (Department of the Navy) DOE (Department of Energy)	$3,551,315,658	7.3%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	California Institute of Technology 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$2,364,181,445	4.9%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2024; unchanged since FY2024.
4	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$1,933,374,722	4.0%	Rank history: not on the FY2021–FY2024 lists; new.
5	Fermi Forward Discovery Group, LLC Top agencies DOE (Department of Energy)	$1,733,790,751	3.6%	Rank history: not on the FY2021–FY2024 lists; new.
6	Northrop Grumman Corporation 26 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) DARPA (Defense Advanced Research Projects Agency)	$1,569,954,913	3.2%	Rank history: #7 in FY2021, #6 in FY2022, #4 in FY2023 and #4 in FY2024; down 2 since FY2024.
7	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,406,108,702	2.9%	Rank history: #6 in FY2021, #7 in FY2022, #8 in FY2023 and #7 in FY2024; unchanged since FY2024.
8	Leidos Holdings, Inc. 9 awardees, including Leidos Biomedical Research Inc., Leidos, Inc. and Dynetics, Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Army (Department of the Army)	$1,350,048,473	2.8%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023 and #5 in FY2024; down 3 since FY2024.
9	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Everwatch Solutions Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,031,917,526	2.1%	Rank history: #13 in FY2021, #10 in FY2022, #13 in FY2023 and #9 in FY2024; unchanged since FY2024.
10	CACI International Inc. 6 awardees, including Caci Technologies, LLC, Caci, Inc. - Federal and LGS Innovations LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,016,273,524	2.1%	Rank history: #19 in FY2021, #20 in FY2022, #15 in FY2023 and #10 in FY2024; unchanged since FY2024.
11	The Mitre Corporation Top agencies AAFES (Department of Defense Army and Air Force Exchange Service) Army (Department of the Army) Navy (Department of the Navy)	$947,408,376	2.0%	Rank history: #5 in FY2021, #5 in FY2022, #6 in FY2023 and #8 in FY2024; down 3 since FY2024.
12	KBR Wyle Services LLC 6 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$817,649,290	1.7%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list and #13 in FY2024; up 1 since FY2024.
13	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$778,380,365	1.6%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and #14 in FY2024; up 1 since FY2024.
14	Parsons Corporation 6 awardees, including Parsons Government Services Inc., Altamira Technologies Corp and Space Ground System Solutions, Inc. Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Army (Department of the Army)	$701,350,045	1.4%	Rank history: #24 in FY2021, #15 in FY2022, #17 in FY2023 and #17 in FY2024; up 3 since FY2024.
15	Aevex Aerospace, LLC Top agencies USAF (Department of the Air Force)	$665,705,323	1.4%	Rank history: not on the FY2021–FY2024 lists; up 272 since FY2024.
16	Huntington Ingalls Industries, Inc. 3 awardees, including HII Mission Technologies Corp and HII Unmanned Systems, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$634,373,878	1.3%	Rank history: not on the FY2021 list, #17 in FY2022, not on the FY2023 list and #11 in FY2024; down 5 since FY2024.
17	General Dynamics Corporation 17 awardees, including General Dynamics Mission Systems, Inc., Applied Physical Sciences Corp and General Dynamics Information Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$509,802,131	1.1%	Rank history: #39 in FY2021, #30 in FY2022, #22 in FY2023 and #20 in FY2024; up 3 since FY2024.
18	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$498,273,928	1.0%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2024; unchanged since FY2024.
19	Amentum Holdings, Inc. 9 awardees, including Amentum Technology, Inc., Amentum Services, Inc. and Tate, Incorporated Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$497,734,857	1.0%	Rank history: not on the FY2021–FY2024 lists; up 97 since FY2024.
20	RTX Corporation 23 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Range Generation Next LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$491,308,702	1.0%	Rank history: #9 in FY2021, #12 in FY2022, #14 in FY2023 and #16 in FY2024; down 4 since FY2024.
21	The Boeing Company 15 awardees, including Aurora Flight Sciences Corporation and HRL Laboratories, LLC Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$452,116,046	0.9%	Rank history: #22 in FY2021, #23 in FY2022, #24 in FY2023 and #19 in FY2024; down 2 since FY2024.
22	Intuitive Research and Technology Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$431,856,255	0.9%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #37 in FY2024; up 15 since FY2024.
23	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DOD (Department of Defense)	$374,752,898	0.8%	Rank history: #17 in FY2021, #22 in FY2022, #26 in FY2023 and #15 in FY2024; down 8 since FY2024.
24	Science Applications International Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$363,403,575	0.7%	Rank history: #35 in FY2021, #27 in FY2022, #28 in FY2023 and #21 in FY2024; down 3 since FY2024.
25	L3Harris Technologies, Inc. 21 awardees, including L3Harris Forcex, Inc., L3Harris Technologies Integrated Systems L.P. and L3Harris Nexgen Communications LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$340,717,952	0.7%	Rank history: #18 in FY2021, #16 in FY2022, #23 in FY2023 and #27 in FY2024; up 2 since FY2024.
26	The Pennsylvania State University Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) OSD (Office of the Secretary of Defense)	$331,584,479	0.7%	Rank history: #21 in FY2021, #21 in FY2022, #20 in FY2023 and #22 in FY2024; down 4 since FY2024.
27	Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy)	$302,244,892	0.6%	Rank history: #25 in FY2021, not on the FY2022–FY2023 lists and #25 in FY2024; down 2 since FY2024.
28	Linquest Corporation Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$300,651,871	0.6%	Rank history: #26 in FY2021, #26 in FY2022, #25 in FY2023 and #26 in FY2024; down 2 since FY2024.
29	Palantir Technologies Inc. Through Palantir USG Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) USAF (Department of the Air Force)	$271,301,309	0.6%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list and #43 in FY2024; up 14 since FY2024.
30	Space Exploration Technologies Corp. 2 awardees Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$252,556,688	0.5%	Rank history: #8 in FY2021, #8 in FY2022, #9 in FY2023 and #12 in FY2024; down 18 since FY2024.
31	University of Dayton Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$205,062,963	0.4%	Rank history: #41 in FY2021, #48 in FY2022, #45 in FY2023 and #39 in FY2024; up 8 since FY2024.
32	Battelle Memorial Institute Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$175,669,704	0.4%	Rank history: #30 in FY2021, #18 in FY2022, #16 in FY2023 and #24 in FY2024; down 8 since FY2024.
33	Deloitte Through Deloitte Consulting LLP Top agencies WHS (DOD Washington Headquarters Service) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$161,110,132	0.3%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 19 since FY2024.
34	X-Bow Launch Systems Inc. Top agencies USAF (Department of the Air Force)	$150,715,257	0.3%	Rank history: not on the FY2021–FY2024 lists; up 283 since FY2024.
35	BAE Systems 9 awardees, including BAE Systems Information & Electronic Systems Integration Inc. and BAE Systems Land & Armaments L.P. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) Army (Department of the Army)	$144,425,244	0.3%	Rank history: #42 in FY2021, #34 in FY2022, #27 in FY2023 and #31 in FY2024; down 4 since FY2024.
36	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$136,509,594	0.3%	Rank history: #57 in FY2021, #55 in FY2022, #53 in FY2023 and #66 in FY2024; up 30 since FY2024.
37	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$127,561,526	0.3%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 20 since FY2024.
38	Technology Service Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$126,801,992	0.3%	Rank history: #74 in FY2021, #45 in FY2022, #31 in FY2023 and #36 in FY2024; down 2 since FY2024.
39	Aerovironment, Inc. 3 awardees, including Bluehalo, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$125,617,809	0.3%	Rank history: not on the FY2021–FY2024 lists; up 313 since FY2024.
40	Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$123,887,645	0.3%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 5 since FY2024.
41	Joint Technical Solutions, LLC Top agencies Army (Department of the Army)	$121,612,455	0.3%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; up 34 since FY2024.
42	CQ JV, LLC Top agencies USAF (Department of the Air Force)	$117,704,348	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #58 in FY2023 and #50 in FY2024; up 8 since FY2024.
43	General Electric Company 6 awardees, including Innoveering LLC, GE Energy Power Conversion Naval Systems Inc. and GE Aviation Systems LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$116,703,625	0.2%	Rank history: #38 in FY2021, #37 in FY2022, #32 in FY2023 and #34 in FY2024; down 9 since FY2024.
44	Qinetiq Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$112,225,376	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; up 5 since FY2024.
45	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$108,323,627	0.2%	Rank history: not on the FY2021 list, #46 in FY2022, #46 in FY2023 and #35 in FY2024; down 10 since FY2024.
46	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency)	$107,963,270	0.2%	Rank history: #51 in FY2021, #89 in FY2022, #74 in FY2023 and #83 in FY2024; up 37 since FY2024.
47	Radiance Technologies, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency)	$106,099,898	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; up 24 since FY2024.
48	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$101,446,071	0.2%	Rank history: #23 in FY2021, #25 in FY2022, #29 in FY2023 and #32 in FY2024; down 16 since FY2024.
49	American Electronic Warfare Associates Incorporated Top agencies Navy (Department of the Navy)	$100,683,367	0.2%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2024; up 5 since FY2024.
50	Southwest Research Institute Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$96,655,212	0.2%	Rank history: #43 in FY2021, #43 in FY2022, #42 in FY2023 and #42 in FY2024; down 8 since FY2024.
51	Metrostar Systems, LLC Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$96,207,849	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
52	Teledyne Technologies Incorporated 5 awardees, including Teledyne Brown Engineering, Inc., Teledyne Scientific & Imaging, LLC and Teledyne Flir Defense, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) USAF (Department of the Air Force)	$96,094,857	0.2%	Rank history: #92 in FY2021, #92 in FY2022, #51 in FY2023 and #33 in FY2024; down 19 since FY2024.
53	Aerodyne-Sgt Engineering Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$92,786,066	0.2%	Rank history: not on the FY2021 list, #91 in FY2022, #40 in FY2023 and #47 in FY2024; down 6 since FY2024.
54	Torch Technologies Inc. 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$86,232,973	0.2%	Rank history: #82 in FY2021, not on the FY2022–FY2023 lists and #51 in FY2024; down 3 since FY2024.
55	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$83,890,589	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #73 in FY2024; up 18 since FY2024.
56	The Regents of the University of California Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$83,706,387	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
57	Space Network Solutions LLC Top agencies NASA (National Aeronautics and Space Administration)	$83,683,725	0.2%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; down 19 since FY2024.
58	University of Washington Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$82,935,732	0.2%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 20 since FY2024.
59	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$82,660,182	0.2%	Rank history: #34 in FY2021, #33 in FY2022, #43 in FY2023 and #48 in FY2024; down 11 since FY2024.
60	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$81,771,653	0.2%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 5 since FY2024.
61	Sierra Nevada Company, LLC 4 awardees, including Sierra Space Corp and Kutta Technologies, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$76,629,942	0.2%	Rank history: not on the FY2021–FY2024 lists; up 68 since FY2024.
62	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$76,405,893	0.2%	Rank history: #33 in FY2021, #41 in FY2022, #36 in FY2023 and #46 in FY2024; down 16 since FY2024.
63	Anduril Industries Inc. 2 awardees, including Exoanalytic Solutions Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$73,910,944	0.2%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2024; up 13 since FY2024.
64	Frontier Technology Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$73,050,078	0.2%	Rank history: #29 in FY2021, #32 in FY2022, #38 in FY2023 and #40 in FY2024; down 24 since FY2024.
65	Association of Universities for Research In Astronomy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$72,624,604	0.1%	Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
66	Arctic Slope Regional Corporation 9 awardees, including Asrc Federal System Solutions LLC, Data Networks, Inc. and Applied Research Solutions, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Commerce (Department of Commerce)	$72,617,896	0.1%	Rank history: #94 in FY2021, #62 in FY2022, #81 in FY2023 and #60 in FY2024; down 6 since FY2024.
67	Westat, Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$72,559,884	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #85 in FY2023 and #85 in FY2024; up 18 since FY2024.
68	J.f. Taylor, Inc. Top agencies Navy (Department of the Navy)	$71,535,190	0.1%	Rank history: #72 in FY2021, #75 in FY2022, #86 in FY2023 and #96 in FY2024; up 28 since FY2024.
69	CGI Federal Inc. 3 awardees, including Sehlke Consulting LLC and Manufacturing Technical Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) WHS (DOD Washington Headquarters Service) DLA (Defense Logistics Agency)	$71,039,222	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Chickasaw Nation Through Corvid Technologies, LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$70,300,623	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	Two Six Labs, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$69,797,345	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2024 list; up 31 since FY2024.
72	Gemini Technical Services JV, LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$66,717,104	0.1%	Rank history: not on the FY2021–FY2024 lists; up 43 since FY2024.
73	MP Solutions, LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$65,324,430	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #71 in FY2023 and #59 in FY2024; down 14 since FY2024.
74	Janus Research Group, LLC Top agencies Army (Department of the Army)	$64,619,418	0.1%	Rank history: not on the FY2021–FY2024 lists; up 76 since FY2024.
75	Rsi-Quantitech JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$64,422,632	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 11 since FY2024.
76	Fibertek, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$63,841,548	0.1%	Rank history: #37 in FY2021, #39 in FY2022, #49 in FY2023 and #41 in FY2024; down 35 since FY2024.
77	Mantech SRS Technologies, Inc. Top agencies USAF (Department of the Air Force)	$63,492,134	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
78	Applied Research Associates, Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$61,811,175	0.1%	Rank history: #56 in FY2021, #84 in FY2022, #57 in FY2023 and #56 in FY2024; down 22 since FY2024.
79	Envision Innovative Solutions, Inc. Top agencies Army (Department of the Army)	$61,406,383	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #98 in FY2024; up 19 since FY2024.
80	Dzyne Technologies, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$60,755,473	0.1%	Rank history: #87 in FY2021 and not on the FY2022–FY2024 lists; up 59 since FY2024.
81	BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DHA (Defense Health Agency)	$60,378,641	0.1%	Rank history: not on the FY2021–FY2024 lists; up 345 since FY2024.
82	Columbus Technologies and Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$60,255,268	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	Tactica Solutions LLC Top agencies Army (Department of the Army)	$59,993,182	0.1%	Rank history: not on the FY2021–FY2024 lists; up 364 since FY2024.
84	Assured Information Security, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) WHS (DOD Washington Headquarters Service)	$59,619,833	0.1%	Rank history: #28 in FY2021, #42 in FY2022, #59 in FY2023 and #62 in FY2024; down 22 since FY2024.
85	The Trustees of the Stevens Institute of Technology Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) USAF (Department of the Air Force)	$59,085,984	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #91 in FY2024; up 6 since FY2024.
86	Barrios Technology, LLC Top agencies NASA (National Aeronautics and Space Administration)	$59,083,542	0.1%	Rank history: #49 in FY2021, #50 in FY2022, #65 in FY2023 and #58 in FY2024; down 28 since FY2024.
87	Kratos S2, Inc. Top agencies USAF (Department of the Air Force)	$58,529,490	0.1%	Rank history: not on the FY2021–FY2024 lists; up 38 since FY2024.
88	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$55,757,255	0.1%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2024; down 24 since FY2024.
89	Toyon Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$55,594,318	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #93 in FY2023 and #82 in FY2024; down 7 since FY2024.
90	Mitchell Vantage Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$55,485,370	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #68 in FY2024; down 22 since FY2024.
91	Physical Sciences Inc. 2 awardees, including Faraday Technology, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$54,882,204	0.1%	Rank history: #61 in FY2021, #53 in FY2022, #80 in FY2023 and #80 in FY2024; down 11 since FY2024.
92	JJR Solutions LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$54,248,112	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; down 22 since FY2024.
93	Ntsi LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$53,893,818	0.1%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; down 3 since FY2024.
94	Massachusetts Institute of Technology Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$53,440,736	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	Bastion Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$51,524,451	0.1%	Rank history: #58 in FY2021, #67 in FY2022, #83 in FY2023 and #93 in FY2024; down 2 since FY2024.
96	Semper Valens Solutions, Inc. Top agencies Army (Department of the Army)	$51,064,102	0.1%	Rank history: not on the FY2021–FY2024 lists; up 91 since FY2024.
97	Guidehouse Inc. 3 awardees, including Peraton Technology Services Inc. and Aptim Federal Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$50,996,577	0.1%	Rank history: not on the FY2021–FY2024 lists; up 84 since FY2024.
98	Systems Planning and Analysis, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$48,712,096	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #88 in FY2023 and not on the FY2024 list; up 13 since FY2024.
99	Simulation Technologies Inc Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$47,930,117	0.1%	Rank history: not on the FY2021–FY2024 lists; up 52 since FY2024.
100	Rsc2, Inc. Top agencies Army (Department of the Army)	$46,675,106	0.1%	Rank history: not on the FY2021–FY2024 lists; up 239 since FY2024.

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 $48.5 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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