Top 100 Contractors in NAICS 541715: Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology), FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 28 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$5,505,084,630	12.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	Fluor Corporation Through Fluor Marine Propulsion, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy)	$3,543,725,464	7.9%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
3	California Institute of Technology 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$2,794,184,834	6.2%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2024 and #3 in FY2025; unchanged since FY2022.
4	Northrop Grumman Corporation 29 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)	$2,174,944,070	4.8%	Rank history: #7 in FY2021, #6 in FY2022, #4 in FY2024 and #6 in FY2025; up 2 since FY2022.
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)	$1,758,305,244	3.9%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2024 and #8 in FY2025; down 1 since FY2022.
6	The Mitre Corporation Top agencies AAFES (Department of Defense Army and Air Force Exchange Service) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$1,567,678,769	3.5%	Rank history: #5 in FY2021, #5 in FY2022, #8 in FY2024 and #11 in FY2025; down 1 since FY2022.
7	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) USAF (Department of the Air Force)	$1,381,892,663	3.1%	Rank history: #12 in FY2021, #9 in FY2022, #23 in FY2024 and not on the FY2025 list; up 2 since FY2022.
8	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,269,909,210	2.8%	Rank history: #6 in FY2021, #7 in FY2022, #7 in FY2024 and #7 in FY2025; down 1 since FY2022.
9	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$939,766,690	2.1%	Rank history: #8 in FY2021, #8 in FY2022, #12 in FY2024 and #30 in FY2025; down 1 since FY2022.
10	Alion Science and Technology Corporation 2 awardees, including HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$703,354,149	1.6%	Rank history: #11 in FY2021, not on the FY2022 list, #74 in FY2024 and not on the FY2025 list; up 151 since FY2022.
11	Georgia TECH Research Corp 2 awardees, including Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$700,197,595	1.6%	Rank history: #10 in FY2021, #11 in FY2022, #79 in FY2024 and not on the FY2025 list; unchanged since FY2022.
12	Kbr, Inc. 8 awardees, including KBR Wyle Services, LLC and Pacific Defense Solutions LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$698,576,778	1.6%	Rank history: #14 in FY2021, #13 in FY2022, #30 in FY2024 and not on the FY2025 list; up 1 since FY2022.
13	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Riverside Engineering LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$688,987,299	1.5%	Rank history: #13 in FY2021, #10 in FY2022, #9 in FY2024 and #9 in FY2025; down 3 since FY2022.
14	RTX Corporation 39 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$599,311,730	1.3%	Rank history: #9 in FY2021, #12 in FY2022, #16 in FY2024 and #20 in FY2025; down 2 since FY2022.
15	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) DARPA (Defense Advanced Research Projects Agency)	$581,373,250	1.3%	Rank history: #19 in FY2021, #20 in FY2022, #10 in FY2024 and #10 in FY2025; up 5 since FY2022.
16	Battelle Memorial Institute 2 awardees, including Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Army (Department of the Army)	$525,505,981	1.2%	Rank history: #30 in FY2021, #18 in FY2022, #24 in FY2024 and #32 in FY2025; up 2 since FY2022.
17	Parsons Corporation 5 awardees, including Parsons Government Services Inc., Space Ground System Solutions, Inc. and Blackhorse, A Parsons LLC Top agencies MDA (DOD Missile Defense Agency) Army (Department of the Army) USAF (Department of the Air Force)	$521,404,898	1.2%	Rank history: #24 in FY2021, #15 in FY2022, #17 in FY2024 and #14 in FY2025; down 2 since FY2022.
18	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$425,009,984	0.9%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2024 and #13 in FY2025; up 251 since FY2022.
19	Jacobs Engineering Group Inc. 10 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Army (Department of the Army)	$325,677,751	0.7%	Rank history: #15 in FY2021, #19 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
20	The Pennsylvania State University Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$305,651,719	0.7%	Rank history: #21 in FY2021, #21 in FY2022, #22 in FY2024 and #26 in FY2025; up 1 since FY2022.
21	General Atomic Technologies Corporation 3 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$294,552,508	0.7%	Rank history: #32 in FY2021, #44 in FY2022, #61 in FY2024 and not on the FY2025 list; up 23 since FY2022.
22	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)	$291,571,393	0.6%	Rank history: #39 in FY2021, #30 in FY2022, #20 in FY2024 and #17 in FY2025; up 8 since FY2022.
23	L3Harris Technologies, Inc. 24 awardees, including L3 Technologies, Inc., L3Harris Technologies Integrated Systems L.P. and Fisica Applied Technologies, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency)	$289,976,394	0.6%	Rank history: #18 in FY2021, #16 in FY2022, #27 in FY2024 and #25 in FY2025; down 7 since FY2022.
24	The Boeing Company 13 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)	$288,736,672	0.6%	Rank history: #22 in FY2021, #23 in FY2022, #19 in FY2024 and #21 in FY2025; down 1 since FY2022.
25	Linquest Corporation 3 awardees, including The Perduco Group, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$286,668,391	0.6%	Rank history: #26 in FY2021, #26 in FY2022, #26 in FY2024 and #28 in FY2025; up 1 since FY2022.
26	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$249,473,797	0.6%	Rank history: #17 in FY2021, #22 in FY2022, #15 in FY2024 and #23 in FY2025; down 4 since FY2022.
27	BAE Systems PLC 10 awardees, including BAE Systems Information & Electronic Systems Integration Inc. and BAE Systems Land & Armaments L.P. Top agencies DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army) USAF (Department of the Air Force)	$228,097,240	0.5%	Rank history: #42 in FY2021, #34 in FY2022, #31 in FY2024 and #35 in FY2025; up 7 since FY2022.
28	Science Applications International Corporation 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$227,448,886	0.5%	Rank history: #35 in FY2021, #27 in FY2022, #21 in FY2024 and #24 in FY2025; down 1 since FY2022.
29	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$187,651,045	0.4%	Rank history: #23 in FY2021, #25 in FY2022, #32 in FY2024 and #48 in FY2025; down 4 since FY2022.
30	Global Health Investment Corporation Top agencies HHS (Department of Health and Human Services)	$184,588,220	0.4%	Rank history: not on the FY2021 list, #51 in FY2022 and not on the FY2024–FY2025 lists; up 21 since FY2022.
31	Technology Service Corp Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) DHS (Department of Homeland Security)	$165,563,300	0.4%	Rank history: #74 in FY2021, #45 in FY2022, #36 in FY2024 and #38 in FY2025; up 14 since FY2022.
32	General Electric Company 7 awardees, including Torch Research, LLC, GE Energy Power Conversion Naval Systems Inc. and GE Aviation Systems LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency)	$152,816,200	0.3%	Rank history: #38 in FY2021, #37 in FY2022, #34 in FY2024 and #43 in FY2025; up 5 since FY2022.
33	Utah State University 2 awardees, including Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$146,615,820	0.3%	Rank history: #59 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
34	Safesource Direct LLC Top agencies HHS (Department of Health and Human Services)	$144,763,968	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Intuitive Research and Technology Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$143,801,766	0.3%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2024 and #22 in FY2025; new.
36	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$142,574,722	0.3%	Rank history: #33 in FY2021, #41 in FY2022, #46 in FY2024 and #62 in FY2025; up 5 since FY2022.
37	Mantech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Mantech SRS Technologies, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$141,064,576	0.3%	Rank history: #45 in FY2021, #29 in FY2022, #69 in FY2024 and not on the FY2025 list; down 8 since FY2022.
38	Frontier Technology Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$138,914,501	0.3%	Rank history: #29 in FY2021, #32 in FY2022, #40 in FY2024 and #64 in FY2025; down 6 since FY2022.
39	PPD Development LP Top agencies HHS (Department of Health and Human Services)	$136,764,920	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Aerodyne-Sgt Engineering Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$136,296,185	0.3%	Rank history: not on the FY2021 list, #91 in FY2022, #47 in FY2024 and #53 in FY2025; up 51 since FY2022.
41	Qinetiq Group PLC 2 awardees, including Qinetiq Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$130,987,297	0.3%	Rank history: #31 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
42	Southwest Research Institute 2 awardees, including Signature Science LLC Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$125,161,834	0.3%	Rank history: #43 in FY2021, #43 in FY2022, #42 in FY2024 and #50 in FY2025; up 1 since FY2022.
43	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$116,600,281	0.3%	Rank history: #34 in FY2021, #33 in FY2022, #48 in FY2024 and #59 in FY2025; down 10 since FY2022.
44	American Electronic Warfare Associates, Incorporated Top agencies Navy (Department of the Navy)	$112,054,768	0.2%	Rank history: #46 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
45	University of Dayton Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$108,098,550	0.2%	Rank history: #41 in FY2021, #48 in FY2022, #39 in FY2024 and #31 in FY2025; up 3 since FY2022.
46	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) USAF (Department of the Air Force)	$105,968,192	0.2%	Rank history: not on the FY2021 list, #46 in FY2022, #35 in FY2024 and #45 in FY2025; unchanged since FY2022.
47	Innovative Defense Technologies, LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$103,910,200	0.2%	Rank history: #73 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; up 27 since FY2022.
48	Kratos Defense & Security Solutions, Inc. 9 awardees, including Kratos S2, Inc., Kratos Sre, Inc. and Kratos Defense & Rocket Support Services, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$101,985,001	0.2%	Rank history: #55 in FY2021, #38 in FY2022, #97 in FY2024 and not on the FY2025 list; down 10 since FY2022.
49	Fibertek, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$100,832,337	0.2%	Rank history: #37 in FY2021, #39 in FY2022, #41 in FY2024 and #76 in FY2025; down 10 since FY2022.
50	Mercury Computer Systems Inc. 4 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) DARPA (Defense Advanced Research Projects Agency)	$99,082,070	0.2%	Rank history: #85 in FY2021, #52 in FY2022, #99 in FY2024 and not on the FY2025 list; up 2 since FY2022.
51	Teledyne Technologies Incorporated 5 awardees, including Teledyne Brown Engineering, Inc., Teledyne Scientific & Imaging, LLC and Nova Research, Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$98,988,870	0.2%	Rank history: #92 in FY2021, #92 in FY2022, #33 in FY2024 and #52 in FY2025; up 41 since FY2022.
52	Mitchell Vantage Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$94,734,629	0.2%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2024 and #90 in FY2025; up 229 since FY2022.
53	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$93,453,057	0.2%	Rank history: #57 in FY2021, #55 in FY2022, #66 in FY2024 and #36 in FY2025; up 2 since FY2022.
54	Amentum Services, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) USAF (Department of the Air Force)	$92,247,476	0.2%	Rank history: not on the FY2021 list, #36 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
55	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$91,373,861	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	State of California Controllers Office 14 awardees, including The Regents of the University of California, University of California, San Diego and University of California, Santa Barbara Top agencies NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services) Army (Department of the Army)	$91,127,080	0.2%	Rank history: #68 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
57	Applied Research Associates, Inc. 2 awardees, including Neya Systems LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$90,659,995	0.2%	Rank history: #56 in FY2021, #84 in FY2022, #56 in FY2024 and #78 in FY2025; up 27 since FY2022.
58	CQ JV, LLC Top agencies USAF (Department of the Air Force)	$89,093,345	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #50 in FY2024 and #42 in FY2025; down 4 since FY2022.
59	Assured Information Security, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$85,235,568	0.2%	Rank history: #28 in FY2021, #42 in FY2022, #62 in FY2024 and #84 in FY2025; down 17 since FY2022.
60	RHO Inc. Through Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$84,011,807	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 194 since FY2022.
61	University of Washington 3 awardees, including University of Washington Department of Radiology Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) DARPA (Defense Advanced Research Projects Agency)	$78,866,503	0.2%	Rank history: #78 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
62	HP Enterprise Services LLC 3 awardees, including Peraton Technology Services Inc. and Peraton Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$77,884,314	0.2%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
63	Ball Corp 2 awardees, including BAE Systems Space & Mission Systems Inc. and Ball Aerospace & Technologies Corp. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$76,919,772	0.2%	Rank history: #54 in FY2021, #59 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
64	DCS Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$75,883,222	0.2%	Rank history: #44 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
65	Barrios Technology, LLC Top agencies NASA (National Aeronautics and Space Administration)	$71,332,970	0.2%	Rank history: #49 in FY2021, #50 in FY2022, #58 in FY2024 and #86 in FY2025; down 15 since FY2022.
66	Radial Solutions Inc. Through Rsi-Quantitech JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$68,150,665	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Radiance Technologies Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$68,088,837	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$67,278,594	0.1%	Rank history: #52 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
69	Davidson Technologies Inc. Top agencies USAF (Department of the Air Force)	$67,212,131	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 280 since FY2022.
70	The Veritas Capital Fund VII L P 2 awardees, including Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army) USAF (Department of the Air Force)	$65,848,158	0.1%	Rank history: not on the FY2021 list, #76 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
71	MP Solutions, LLC Top agencies MDA (DOD Missile Defense Agency)	$64,292,818	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #59 in FY2024 and #73 in FY2025; down 10 since FY2022.
72	Bluehalo, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$64,207,473	0.1%	Rank history: #64 in FY2021, #63 in FY2022, #67 in FY2024 and not on the FY2025 list; down 9 since FY2022.
73	Range Generation Next LLC Top agencies Army (Department of the Army)	$63,354,122	0.1%	Rank history: #48 in FY2021, #69 in FY2022, #77 in FY2024 and not on the FY2025 list; down 4 since FY2022.
74	Modern Technology Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$62,184,747	0.1%	Rank history: #51 in FY2021, #89 in FY2022, #83 in FY2024 and #46 in FY2025; up 15 since FY2022.
75	Prescient Edge Corporation Top agencies Navy (Department of the Navy)	$59,208,379	0.1%	Rank history: not on the FY2021 list, #77 in FY2022, #44 in FY2024 and not on the FY2025 list; up 2 since FY2022.
76	Riverside Research Institute 3 awardees, including Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$59,104,618	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #89 in FY2024 and not on the FY2025 list; down 10 since FY2022.
77	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$55,966,571	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and #55 in FY2025; new.
78	Duke University Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) Army (Department of the Army)	$54,529,571	0.1%	Rank history: #60 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
79	Envision Innovative Solutions, Inc. Top agencies Army (Department of the Army)	$53,684,004	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2024 and #79 in FY2025; up 248 since FY2022.
80	Physical Sciences Inc. 3 awardees, including Faraday Technology, Inc. and Q-Peak, Incorporated Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$53,208,099	0.1%	Rank history: #61 in FY2021, #53 in FY2022, #80 in FY2024 and #91 in FY2025; down 27 since FY2022.
81	Arctic Slope Regional Corporation 7 awardees, including Asrc Federal System Solutions LLC, AS and D, LLC and Netcentric Technology, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHRA (Defense Human Resources Activity)	$50,262,512	0.1%	Rank history: #94 in FY2021, #62 in FY2022, #60 in FY2024 and #66 in FY2025; down 19 since FY2022.
82	Icahn School of Medicine at Mount Sinai Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$49,673,297	0.1%	Rank history: #86 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 70 since FY2022.
83	Bastion Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$49,035,385	0.1%	Rank history: #58 in FY2021, #67 in FY2022, #93 in FY2024 and #95 in FY2025; down 16 since FY2022.
84	Corvid Technologies LLC Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) Army (Department of the Army)	$47,934,465	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Westat, Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation) EPA (Environmental Protection Agency)	$46,631,383	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #85 in FY2024 and #67 in FY2025; up 34 since FY2022.
86	J.f. Taylor, Inc. Top agencies Navy (Department of the Navy)	$46,270,452	0.1%	Rank history: #72 in FY2021, #75 in FY2022, #96 in FY2024 and #68 in FY2025; down 11 since FY2022.
87	The Trustees of the Stevens Institute of Technology Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Navy (Department of the Navy)	$43,117,754	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2024 and #85 in FY2025; up 156 since FY2022.
88	Systems Planning and Analysis, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$43,095,941	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, not on the FY2024 list and #98 in FY2025; down 1 since FY2022.
89	Sonalysts Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$42,924,280	0.1%	Rank history: #67 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 48 since FY2022.
90	Resilience Government Services, Inc. Top agencies Army (Department of the Army)	$42,388,907	0.1%	Rank history: not on the FY2021 list, #68 in FY2022 and not on the FY2024–FY2025 lists; down 22 since FY2022.
91	Vanderbelt University Medical Center Through Vanderbilt University Medical Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$39,775,208	0.1%	Rank history: not on the FY2021 list, #93 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
92	MRIGLOBAL Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$39,540,426	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Toyon Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$39,316,528	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #82 in FY2024 and #89 in FY2025; down 5 since FY2022.
94	Ai Solutions Inc. Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$39,224,218	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 21 since FY2022.
95	Two Six Parent Inc. 2 awardees, including IST Research, LLC and River Loop Security LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$39,218,870	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #71 in FY2025; new.
96	Nexagen Networks, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$39,209,905	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 248 since FY2022.
97	Integrated Solutions for Systems Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$38,697,904	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 190 since FY2022.
98	Management & Engineering Technologies International Inc. Top agencies USDA (Department of Agriculture)	$38,471,617	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2024 and not on the FY2025 list; new.
99	Galois, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$37,551,423	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 3 since FY2022.
100	Metron Incorporated Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$37,053,240	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.

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 $44.9 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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