Top 100 Contractors in NAICS 541715: Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology), FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 30 awardees Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$4,987,403,386	11.1%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Fluor Corporation Through Fluor Marine Propulsion, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy)	$3,467,756,217	7.7%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	California Institute of Technology 3 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,233,436,222	5.0%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	Northrop Grumman Corporation 24 awardees, including Northrop Grumman Systems Corporation Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$2,171,484,710	4.8%	Rank history: #7 in FY2021, #6 in FY2022, #4 in FY2023 and #6 in FY2025; unchanged since FY2023.
5	Leidos Holdings, Inc. 8 awardees, including Leidos Biomedical Research Inc., Leidos, Inc. and Dynetics, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) DOE (Department of Energy)	$1,526,397,655	3.4%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023 and #8 in FY2025; unchanged since FY2023.
6	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$1,372,205,667	3.0%	Rank history: #98 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
7	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,340,307,654	3.0%	Rank history: #6 in FY2021, #7 in FY2022, #8 in FY2023 and #7 in FY2025; up 1 since FY2023.
8	The Mitre Corporation 2 awardees Top agencies DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense) AAFES (Department of Defense Army and Air Force Exchange Service)	$1,057,559,767	2.3%	Rank history: #5 in FY2021, #5 in FY2022, #6 in FY2023 and #11 in FY2025; down 2 since FY2023.
9	Booz Allen Hamilton Holding Corporation 3 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)	$982,922,879	2.2%	Rank history: #13 in FY2021, #10 in FY2022, #13 in FY2023 and #9 in FY2025; up 4 since FY2023.
10	CACI International Inc. 9 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)	$694,058,750	1.5%	Rank history: #19 in FY2021, #20 in FY2022, #15 in FY2023 and #10 in FY2025; up 5 since FY2023.
11	Huntington Ingalls Industries, Inc. 7 awardees, including HII Mission Technologies Corp and Enlighten It Consulting LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$689,990,785	1.5%	Rank history: not on the FY2021 list, #17 in FY2022, not on the FY2023 list and #16 in FY2025; up 482 since FY2023.
12	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$647,767,236	1.4%	Rank history: #8 in FY2021, #8 in FY2022, #9 in FY2023 and #30 in FY2025; down 3 since FY2023.
13	KBR Wyle Services LLC 7 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$622,285,424	1.4%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list and #12 in FY2025; returned.
14	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$484,344,302	1.1%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and #13 in FY2025; up 4 since FY2023.
15	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$479,479,833	1.1%	Rank history: #17 in FY2021, #22 in FY2022, #26 in FY2023 and #23 in FY2025; up 11 since FY2023.
16	RTX Corporation 23 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Hamilton Sundstrand Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$462,592,097	1.0%	Rank history: #9 in FY2021, #12 in FY2022, #14 in FY2023 and #20 in FY2025; down 2 since FY2023.
17	Parsons Corporation 4 awardees, including Parsons Government Services Inc., Space Ground System Solutions, Inc. and Blackhorse, A Parsons LLC Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) Army (Department of the Army)	$459,983,613	1.0%	Rank history: #24 in FY2021, #15 in FY2022, #17 in FY2023 and #14 in FY2025; unchanged since FY2023.
18	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$450,841,936	1.0%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
19	The Boeing Company 23 awardees, including Aurora Flight Sciences Corporation, HRL Laboratories, LLC and Argon ST, Inc. Top agencies MDA (DOD Missile Defense Agency) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$349,774,300	0.8%	Rank history: #22 in FY2021, #23 in FY2022, #24 in FY2023 and #21 in FY2025; up 5 since FY2023.
20	General Dynamics Corporation 14 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) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$337,478,868	0.7%	Rank history: #39 in FY2021, #30 in FY2022, #22 in FY2023 and #17 in FY2025; up 2 since FY2023.
21	Science Applications International Corporation 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$337,107,618	0.7%	Rank history: #35 in FY2021, #27 in FY2022, #28 in FY2023 and #24 in FY2025; up 7 since FY2023.
22	The Pennsylvania State University Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DTRA (Defense Threat Reduction Agency)	$324,180,294	0.7%	Rank history: #21 in FY2021, #21 in FY2022, #20 in FY2023 and #26 in FY2025; down 2 since FY2023.
23	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$294,544,752	0.7%	Rank history: #12 in FY2021, #9 in FY2022, #7 in FY2023 and not on the FY2025 list; down 16 since FY2023.
24	Battelle Memorial Institute 2 awardees, including Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$285,452,036	0.6%	Rank history: #30 in FY2021, #18 in FY2022, #16 in FY2023 and #32 in FY2025; down 8 since FY2023.
25	Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy)	$278,585,044	0.6%	Rank history: #25 in FY2021, not on the FY2022–FY2023 lists and #27 in FY2025; returned.
26	Linquest Corporation 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$274,938,153	0.6%	Rank history: #26 in FY2021, #26 in FY2022, #25 in FY2023 and #28 in FY2025; down 1 since FY2023.
27	L3Harris Technologies, Inc. 20 awardees, including L3 Technologies, Inc., L3Harris Technologies Integrated Systems L.P. and L3Harris Nexgen Communications LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$270,718,831	0.6%	Rank history: #18 in FY2021, #16 in FY2022, #23 in FY2023 and #25 in FY2025; down 4 since FY2023.
28	Jacobs Government Services Company 6 awardees, including Amentum Technology, Inc., The Keyw Corporation and Jacobs Engineering Group Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Army (Department of the Army)	$269,627,011	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Caci Technologies LLC 4 awardees, including Caci, Inc. - Federal, LGS Innovations LLC and Caci LGS Innovations LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$251,741,310	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Kbr, Inc. 6 awardees, including KBR Wyle Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$169,413,851	0.4%	Rank history: #14 in FY2021, #13 in FY2022, #12 in FY2023 and not on the FY2025 list; down 18 since FY2023.
31	BAE Systems 18 awardees, including BAE Systems Information & Electronic Systems Integration Inc., BAE Systems Land & Armaments L.P. and BAE Systems Ordnance Systems Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) Army (Department of the Army)	$162,892,399	0.4%	Rank history: #42 in FY2021, #34 in FY2022, #27 in FY2023 and #35 in FY2025; down 4 since FY2023.
32	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$155,678,461	0.3%	Rank history: #23 in FY2021, #25 in FY2022, #29 in FY2023 and #48 in FY2025; down 3 since FY2023.
33	Teledyne Technologies Incorporated 6 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) DARPA (Defense Advanced Research Projects Agency)	$142,908,833	0.3%	Rank history: #92 in FY2021, #92 in FY2022, #51 in FY2023 and #52 in FY2025; up 18 since FY2023.
34	General Electric Company 6 awardees, including Torch Research, LLC and GE Energy Power Conversion Naval Systems Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$131,220,590	0.3%	Rank history: #38 in FY2021, #37 in FY2022, #32 in FY2023 and #43 in FY2025; down 2 since FY2023.
35	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) USAF (Department of the Air Force)	$129,946,021	0.3%	Rank history: not on the FY2021 list, #46 in FY2022, #46 in FY2023 and #45 in FY2025; up 11 since FY2023.
36	Technology Service Corp Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) USAF (Department of the Air Force)	$129,729,843	0.3%	Rank history: #74 in FY2021, #45 in FY2022, #31 in FY2023 and #38 in FY2025; down 5 since FY2023.
37	Intuitive Research and Technology Corporation 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$128,281,658	0.3%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #22 in FY2025; down 2 since FY2023.
38	Space Network Solutions LLC Top agencies NASA (National Aeronautics and Space Administration)	$125,314,492	0.3%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; up 142 since FY2023.
39	University of Dayton Top agencies USAF (Department of the Air Force) Army (Department of the Army) WHS (DOD Washington Headquarters Service)	$124,461,713	0.3%	Rank history: #41 in FY2021, #48 in FY2022, #45 in FY2023 and #31 in FY2025; up 6 since FY2023.
40	Frontier Technology Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$119,715,659	0.3%	Rank history: #29 in FY2021, #32 in FY2022, #38 in FY2023 and #64 in FY2025; down 2 since FY2023.
41	Fibertek, Inc. Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) NASA (National Aeronautics and Space Administration)	$116,922,164	0.3%	Rank history: #37 in FY2021, #39 in FY2022, #49 in FY2023 and #76 in FY2025; up 8 since FY2023.
42	Southwest Research Institute Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$116,500,988	0.3%	Rank history: #43 in FY2021, #43 in FY2022, #42 in FY2023 and #50 in FY2025; unchanged since FY2023.
43	Palantir Technologies Inc. Through Palantir USG Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$109,903,424	0.2%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list and #29 in FY2025; returned.
44	Prescient Edge Corporation Top agencies Navy (Department of the Navy)	$108,978,726	0.2%	Rank history: not on the FY2021 list, #77 in FY2022, #75 in FY2023 and not on the FY2025 list; up 31 since FY2023.
45	Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$107,052,499	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
46	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$105,421,801	0.2%	Rank history: #33 in FY2021, #41 in FY2022, #36 in FY2023 and #62 in FY2025; down 10 since FY2023.
47	Aerodyne-Sgt Engineering Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$101,244,456	0.2%	Rank history: not on the FY2021 list, #91 in FY2022, #40 in FY2023 and #53 in FY2025; down 7 since FY2023.
48	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$99,445,289	0.2%	Rank history: #34 in FY2021, #33 in FY2022, #43 in FY2023 and #59 in FY2025; down 5 since FY2023.
49	Qinetiq Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$95,262,564	0.2%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
50	CQ JV, LLC Top agencies USAF (Department of the Air Force)	$94,816,345	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #58 in FY2023 and #42 in FY2025; up 8 since FY2023.
51	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$91,812,037	0.2%	Rank history: #82 in FY2021, not on the FY2022–FY2023 lists and #54 in FY2025; up 313 since FY2023.
52	Deloitte Through Deloitte Consulting LLP Top agencies WHS (DOD Washington Headquarters Service) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$91,230,175	0.2%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
53	Amentum Services, Inc. 2 awardees, including Tate, Incorporated Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$89,161,732	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	American Electronic Warfare Associates Incorporated Top agencies Navy (Department of the Navy)	$88,245,496	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
55	Ascend Performance Materials Texas Inc. Top agencies HHS (Department of Health and Human Services)	$87,666,336	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	Applied Research Associates, Inc. 2 awardees Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$84,661,519	0.2%	Rank history: #56 in FY2021, #84 in FY2022, #57 in FY2023 and #78 in FY2025; up 1 since FY2023.
57	General Atomics Aeronautical Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$82,345,455	0.2%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
58	Barrios Technology, LLC Top agencies NASA (National Aeronautics and Space Administration)	$82,117,935	0.2%	Rank history: #49 in FY2021, #50 in FY2022, #65 in FY2023 and #86 in FY2025; up 7 since FY2023.
59	MP Solutions, LLC Top agencies MDA (DOD Missile Defense Agency)	$81,014,893	0.2%	Rank history: not on the FY2021 list, #61 in FY2022, #71 in FY2023 and #73 in FY2025; up 12 since FY2023.
60	Arctic Slope Regional Corporation 6 awardees, including Asrc Federal System Solutions LLC, Netcentric Technology, LLC and Data Networks, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHRA (Defense Human Resources Activity)	$80,654,206	0.2%	Rank history: #94 in FY2021, #62 in FY2022, #81 in FY2023 and #66 in FY2025; up 21 since FY2023.
61	General Atomic Technologies Corporation 3 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) DOE (Department of Energy)	$79,146,375	0.2%	Rank history: #32 in FY2021, #44 in FY2022, #21 in FY2023 and not on the FY2025 list; down 40 since FY2023.
62	Assured Information Security, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$78,983,057	0.2%	Rank history: #28 in FY2021, #42 in FY2022, #59 in FY2023 and #84 in FY2025; down 3 since FY2023.
63	Parsons Government Services Inc. Top agencies MDA (DOD Missile Defense Agency) Army (Department of the Army) WHS (DOD Washington Headquarters Service)	$78,158,007	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force)	$78,061,746	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.
65	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$77,114,001	0.2%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
66	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$73,192,167	0.2%	Rank history: #57 in FY2021, #55 in FY2022, #53 in FY2023 and #36 in FY2025; down 13 since FY2023.
67	Bluehalo, LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$72,389,662	0.2%	Rank history: #64 in FY2021, #63 in FY2022, #72 in FY2023 and not on the FY2025 list; up 5 since FY2023.
68	Mitchell Vantage Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$71,107,227	0.2%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #90 in FY2025; down 16 since FY2023.
69	Mantech International Corporation 2 awardees, including Mantech SRS Technologies, Inc. and Mantech Advanced Systems International, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$69,527,087	0.2%	Rank history: #45 in FY2021, #29 in FY2022, #37 in FY2023 and not on the FY2025 list; down 32 since FY2023.
70	JJR Solutions LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$68,891,977	0.2%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 85 since FY2023.
71	Radiance Technologies, Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$68,520,238	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
72	Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) Army (Department of the Army)	$68,492,045	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$68,281,196	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #55 in FY2025; up 4 since FY2023.
74	Alion Science and Technology Corporation Through HII Mission Technologies Corp Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$66,778,575	0.1%	Rank history: #11 in FY2021, not on the FY2022 list, #10 in FY2023 and not on the FY2025 list; down 64 since FY2023.
75	Joint Technical Solutions, LLC Top agencies Army (Department of the Army)	$64,301,300	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
76	Anduril Industries Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$64,202,097	0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; up 62 since FY2023.
77	Range Generation Next LLC Top agencies Army (Department of the Army)	$64,113,555	0.1%	Rank history: #48 in FY2021, #69 in FY2022, #73 in FY2023 and not on the FY2025 list; down 4 since FY2023.
78	University of Washington Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$61,301,538	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
79	Georgia TECH Research Corp 2 awardees, including Georgia TECH Applied Research Corp Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$60,643,583	0.1%	Rank history: #10 in FY2021, #11 in FY2022, #11 in FY2023 and not on the FY2025 list; down 68 since FY2023.
80	Physical Sciences Inc. 4 awardees, including Faraday Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$59,303,795	0.1%	Rank history: #61 in FY2021, #53 in FY2022, #80 in FY2023 and #91 in FY2025; unchanged since FY2023.
81	IST Research, LLC Top agencies WHS (DOD Washington Headquarters Service) Army (Department of the Army) USAF (Department of the Air Force)	$57,333,229	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Toyon Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$56,571,425	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #93 in FY2023 and #89 in FY2025; up 11 since FY2023.
83	Modern Technology Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$55,438,042	0.1%	Rank history: #51 in FY2021, #89 in FY2022, #74 in FY2023 and #46 in FY2025; down 9 since FY2023.
84	Management & Engineering Technologies International Inc. Top agencies USDA (Department of Agriculture)	$55,276,581	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 14 since FY2023.
85	Westat, Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$55,172,936	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #85 in FY2023 and #67 in FY2025; unchanged since FY2023.
86	Rsi-Quantitech JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$55,079,775	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
87	Diazyme Laboratories Inc. Through General Atomics Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Navy (Department of the Navy)	$53,448,949	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Spirit Aerosystems Holdings, Inc. 2 awardees, including Spirit Aerosystems Inc. and FMI Solutions, Inc. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) NASA (National Aeronautics and Space Administration)	$52,783,665	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 213 since FY2023.
89	Riverside Research Institute 3 awardees, including Applied Research Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$51,116,531	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #76 in FY2023 and not on the FY2025 list; down 13 since FY2023.
90	Ntsi LLC Top agencies MDA (DOD Missile Defense Agency)	$50,239,211	0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 12 since FY2023.
91	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)	$49,274,162	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #85 in FY2025; down 4 since FY2023.
92	Neany Inc. Top agencies Army (Department of the Army)	$48,850,110	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Bastion Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$48,365,147	0.1%	Rank history: #58 in FY2021, #67 in FY2022, #83 in FY2023 and #95 in FY2025; down 10 since FY2023.
94	North Point Defense Inc. Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force) Army (Department of the Army)	$48,340,071	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 178 since FY2023.
95	QYK Brands LLC Top agencies HHS (Department of Health and Human Services)	$48,315,608	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	J.f. Taylor, Inc. Top agencies Navy (Department of the Navy)	$46,985,487	0.1%	Rank history: #72 in FY2021, #75 in FY2022, #86 in FY2023 and #68 in FY2025; down 10 since FY2023.
97	Kratos Defense & Security Solutions, Inc. 5 awardees, including Kratos S2, Inc., Kratos Defense & Rocket Support Services, Inc. and Kratos Sre, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$46,218,062	0.1%	Rank history: #55 in FY2021, #38 in FY2022, #48 in FY2023 and not on the FY2025 list; down 49 since FY2023.
98	Envision Innovative Solutions, Inc. Top agencies Army (Department of the Army)	$46,084,121	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #79 in FY2025; down 19 since FY2023.
99	Mercury Computer Systems Inc. 3 awardees, including Physical Optics Corporation, Mercury Mission Systems LLC and Mercury Systems Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$45,490,960	0.1%	Rank history: #85 in FY2021, #52 in FY2022, #50 in FY2023 and not on the FY2025 list; down 49 since FY2023.
100	Axient LLC Top agencies USAF (Department of the Air Force)	$45,399,927	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 15 since FY2023.

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 $45 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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