Top 100 National Aeronautics and Space Administration Contractors, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	California Institute of Technology 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools	$2,795,094,706	16.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	Space Exploration Technologies Corp. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 481212 Nonscheduled Chartered Freight Air Transportation	$1,569,444,981	9.0%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2024 and #3 in FY2025; up 1 since FY2022.
3	The Boeing Company 19 awardees, including Millennium Space Systems, Inc. and Boeing Aerospace Operations, Inc. Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,568,882,051	9.0%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2024 and #2 in FY2025; down 1 since FY2022.
4	Lockheed Martin Corporation 9 awardees, including Astrotech Space Operations, LLC, Lockheed Martin Integrated Systems, LLC and Lockheed Martin Space Ops Co Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336411 Aircraft Manufacturing	$678,286,187	3.9%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2024 and #7 in FY2025; unchanged since FY2022.
5	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$479,322,578	2.8%	Rank history: #9 in FY2021, #8 in FY2022, #16 in FY2024 and not on the FY2025 list; up 3 since FY2022.
6	Northrop Grumman Corporation 17 awardees, including Northrop Grumman Systems Corporation, Orbital Sciences LLC and ATK Space Systems LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$466,923,173	2.7%	Rank history: #5 in FY2021, #6 in FY2022, #13 in FY2024 and #9 in FY2025; unchanged since FY2022.
7	Jacobs Engineering Group Inc. 7 awardees, including Amentum Technology, Inc. and Ch2M Hill, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561210 Facilities Support Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$454,104,472	2.6%	Rank history: #6 in FY2021, #5 in FY2022, #47 in FY2024 and not on the FY2025 list; down 2 since FY2022.
8	Blue Origin LLC 2 awardees, including Blue Origin Washington, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 481212 Nonscheduled Chartered Freight Air Transportation 336414 Guided Missile and Space Vehicle Manufacturing	$440,787,771	2.5%	Rank history: #60 in FY2021, not on the FY2022 list, #5 in FY2024 and #4 in FY2025; up 115 since FY2022.
9	Aerojet Rocketdyne Holdings, Inc. 5 awardees, including Aerojet Rocketdyne of DE, Inc. and Aerojet Rocketdyne, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$351,983,644	2.0%	Rank history: #7 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
10	Kbr, Inc. 4 awardees, including KBR Wyle Services, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541330 Engineering Services 517919 All Other Telecommunications	$346,863,471	2.0%	Rank history: #8 in FY2021, #7 in FY2022, #22 in FY2024 and not on the FY2025 list; down 3 since FY2022.
11	HP Enterprise Services LLC 2 awardees, including Peraton Inc. Top NAICS codes 517919 All Other Telecommunications 541330 Engineering Services 541512 Computer Systems Design Services	$337,344,732	1.9%	Rank history: #15 in FY2021, #12 in FY2022, #32 in FY2024 and not on the FY2025 list; up 1 since FY2022.
12	Science Applications International Corporation 2 awardees Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541512 Computer Systems Design Services 541330 Engineering Services	$312,171,983	1.8%	Rank history: #10 in FY2021, #11 in FY2022, #26 in FY2024 and not on the FY2025 list; down 1 since FY2022.
13	Bechtel Corp Through Bechtel National, Inc. Top NAICS codes 236210 Industrial Building Construction	$308,679,002	1.8%	Rank history: #35 in FY2021, #52 in FY2022, #7 in FY2024 and #14 in FY2025; up 39 since FY2022.
14	Science Systems and Applications, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541330 Engineering Services	$227,745,438	1.3%	Rank history: #12 in FY2021, #13 in FY2022, #15 in FY2024 and #17 in FY2025; down 1 since FY2022.
15	Association of Universities for Research In Astronomy, Inc. 2 awardees Top NAICS codes 333314 Optical Instrument and Lens Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$204,525,798	1.2%	Rank history: #20 in FY2021, #10 in FY2022, #12 in FY2024 and #12 in FY2025; down 5 since FY2022.
16	Air Products and Chemicals, Inc. Top NAICS codes 325120 Industrial Gas Manufacturing	$172,529,533	1.0%	Rank history: #52 in FY2021, #39 in FY2022, #18 in FY2024 and #27 in FY2025; up 23 since FY2022.
17	RTX Corporation 17 awardees, including Hamilton Sundstrand Space Systems International, Inc., Raytheon Company and Blue Canyon Technologies LLC Top NAICS codes 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$161,628,329	0.9%	Rank history: #14 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
18	Syncom Space Services LLC Top NAICS codes 561210 Facilities Support Services	$143,476,102	0.8%	Rank history: #17 in FY2021, #16 in FY2022, #37 in FY2024 and not on the FY2025 list; down 2 since FY2022.
19	Aerodyne-Sgt Engineering Services, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$136,296,185	0.8%	Rank history: not on the FY2021 list, #50 in FY2022, #25 in FY2024 and #28 in FY2025; up 31 since FY2022.
20	State of California Controllers Office 18 awardees, including The Regents of the University of California, University of California, LOS Angeles and University of California, San Diego Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$121,314,955	0.7%	Rank history: #22 in FY2021, #17 in FY2022, #72 in FY2024 and not on the FY2025 list; down 3 since FY2022.
21	University System of Maryland 6 awardees, including University of Maryland, College Park, University of Maryland Baltimore County and State of MD Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$111,668,261	0.6%	Rank history: #33 in FY2021, #24 in FY2022, #69 in FY2024 and not on the FY2025 list; up 3 since FY2022.
22	The Aerospace Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing	$110,266,608	0.6%	Rank history: #25 in FY2021, #28 in FY2022, #21 in FY2024 and #22 in FY2025; up 6 since FY2022.
23	The Chenega Corporation Through Chenega Global Protection, LLC Top NAICS codes 561612 Security Guards and Patrol Services 561990 All Other Support Services	$101,929,052	0.6%	Rank history: not on the FY2021 list, #63 in FY2022, #67 in FY2024 and not on the FY2025 list; up 40 since FY2022.
24	PAE Government Services Inc. 3 awardees, including Amentum Spaceport LLC and Centra Technology, Inc. Top NAICS codes 561210 Facilities Support Services 541330 Engineering Services	$95,714,630	0.5%	Rank history: not on the FY2021 list, #26 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
25	Noosphere Venture Partners LP 2 awardees, including Firefly Aerospace Inc. and Firefly Space Transport Services, LLC Top NAICS codes 481212 Nonscheduled Chartered Freight Air Transportation	$95,366,677	0.5%	Rank history: #38 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; up 23 since FY2022.
26	Mitchell Vantage Systems LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$94,734,629	0.5%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2024 and #45 in FY2025; up 114 since FY2022.
27	Teledyne Technologies Incorporated 6 awardees, including Teledyne Brown Engineering, Inc., Teledyne Lecroy, Inc. and Teledyne Digital Imaging US, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals	$91,459,778	0.5%	Rank history: #28 in FY2021, #36 in FY2022, #29 in FY2024 and #33 in FY2025; up 9 since FY2022.
28	The Regents of the University of Colorado 3 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing	$87,224,946	0.5%	Rank history: #21 in FY2021, #20 in FY2022, #28 in FY2024 and #26 in FY2025; down 8 since FY2022.
29	Government of the United States 3 awardees, including Smithsonian Institution and OPM Charlottesville Region Contng Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611430 Professional and Management Development Training	$86,812,420	0.5%	Rank history: #26 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
30	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$82,346,719	0.5%	Rank history: #42 in FY2021, #35 in FY2022, #34 in FY2024 and #35 in FY2025; up 5 since FY2022.
31	Axiom Space Inc. Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$75,211,723	0.4%	Rank history: not on the FY2021 list, #43 in FY2022, #17 in FY2024 and #19 in FY2025; up 12 since FY2022.
32	Astrobotic Technology Inc 2 awardees Top NAICS codes 481212 Nonscheduled Chartered Freight Air Transportation 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$74,645,943	0.4%	Rank history: #23 in FY2021, #18 in FY2022, not on the FY2024 list and #65 in FY2025; down 14 since FY2022.
33	Alcyon Technical Services (Ats) JV, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 561210 Facilities Support Services	$72,598,506	0.4%	Rank history: #27 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
34	Southwest Research Institute Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$71,837,805	0.4%	Rank history: #18 in FY2021, #27 in FY2022, #20 in FY2024 and #21 in FY2025; down 7 since FY2022.
35	Arctic Slope Regional Corporation 8 awardees, including Inuteq, LLC, Asrc Federal System Solutions LLC and Asrc Federal Data Solutions, LLC Top NAICS codes 541513 Computer Facilities Management Services 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$71,690,304	0.4%	Rank history: #16 in FY2021, #15 in FY2022, #38 in FY2024 and #15 in FY2025; down 20 since FY2022.
36	Barrios Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$71,332,970	0.4%	Rank history: #36 in FY2021, #31 in FY2022, #30 in FY2024 and #42 in FY2025; down 5 since FY2022.
37	Adnet Systems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$70,069,561	0.4%	Rank history: #37 in FY2021, #38 in FY2022, #39 in FY2024 and #30 in FY2025; up 1 since FY2022.
38	Radial Solutions Inc. Through Rsi-Quantitech JV LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$68,150,665	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. and Dynetics, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541512 Computer Systems Design Services	$63,899,273	0.4%	Rank history: #13 in FY2021, #21 in FY2022, #48 in FY2024 and #44 in FY2025; down 18 since FY2022.
40	General Electric Company 4 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336412 Aircraft Engine and Engine Parts Manufacturing	$55,021,738	0.3%	Rank history: #40 in FY2021, #49 in FY2022, #33 in FY2024 and #36 in FY2025; up 9 since FY2022.
41	State of Arizona Through University of Arizona Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 611310 Colleges, Universities, and Professional Schools	$53,061,948	0.3%	Rank history: #48 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
42	Intuitive Machines, LLC Top NAICS codes 481212 Nonscheduled Chartered Freight Air Transportation 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$49,015,620	0.3%	Rank history: #30 in FY2021, #22 in FY2022, #24 in FY2024 and #90 in FY2025; down 20 since FY2022.
43	Yulista Solutions, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation	$48,000,687	0.3%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and #38 in FY2025; new.
44	Board of Governers State University System of Florida 8 awardees, including The University of Central Florida Board of Trustees, University of Florida and Florida State University Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$47,012,914	0.3%	Rank history: #70 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; up 25 since FY2022.
45	Bastion Technologies, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561210 Facilities Support Services	$46,826,605	0.3%	Rank history: #47 in FY2021, #45 in FY2022, #54 in FY2024 and #46 in FY2025; unchanged since FY2022.
46	Ball Corp 2 awardees, including BAE Systems Space & Mission Systems Inc. and Ball Aerospace & Technologies Corp. Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$46,755,727	0.3%	Rank history: #19 in FY2021, #25 in FY2022, #79 in FY2024 and not on the FY2025 list; down 21 since FY2022.
47	L3Harris Technologies, Inc. 5 awardees, including NV5 Geospatial Solutions, Inc. Top NAICS codes 333314 Optical Instrument and Lens Manufacturing 511210 Software Publishers	$46,302,755	0.3%	Rank history: #34 in FY2021, #30 in FY2022, #6 in FY2024 and #11 in FY2025; down 17 since FY2022.
48	Trax International Corporation Top NAICS codes 561110 Office Administrative Services	$41,754,808	0.2%	Rank history: #43 in FY2021, #37 in FY2022, #57 in FY2024 and #61 in FY2025; down 11 since FY2022.
49	Healtheon, Inc. Top NAICS codes 236210 Industrial Building Construction	$40,932,032	0.2%	Rank history: #74 in FY2021, #33 in FY2022, #76 in FY2024 and #86 in FY2025; down 16 since FY2022.
50	Amentum Services, Inc. Top NAICS codes 541330 Engineering Services 561210 Facilities Support Services 541380 Testing Laboratories and Services	$40,151,431	0.2%	Rank history: #32 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
51	Agile Decision Sciences, LLC Top NAICS codes 561110 Office Administrative Services 541330 Engineering Services	$39,524,986	0.2%	Rank history: #50 in FY2021, #46 in FY2022, #43 in FY2024 and not on the FY2025 list; down 5 since FY2022.
52	The University of Alabama System 3 awardees, including The University of Alabama In Huntsville, University of Alabama and University of Alabama At Birmingham Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools 561920 Convention and Trade Show Organizers	$36,668,878	0.2%	Rank history: #61 in FY2021, #59 in FY2022, #77 in FY2024 and not on the FY2025 list; up 7 since FY2022.
53	Astrion Group, LLC Top NAICS codes 541380 Testing Laboratories and Services	$36,420,005	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and #39 in FY2025; up 231 since FY2022.
54	Manufacturing Technical Solutions, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$35,719,280	0.2%	Rank history: #46 in FY2021, #57 in FY2022, #55 in FY2024 and not on the FY2025 list; up 3 since FY2022.
55	Metis Flight Research Associates, LLC Top NAICS codes 541330 Engineering Services	$35,330,635	0.2%	Rank history: #75 in FY2021, #58 in FY2022, #85 in FY2024 and not on the FY2025 list; up 3 since FY2022.
56	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$34,259,369	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #51 in FY2025; up 187 since FY2022.
57	General Dynamics Corporation 5 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Gulfstream Aerospace Corporation Top NAICS codes 561110 Office Administrative Services 517919 All Other Telecommunications 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$33,773,508	0.2%	Rank history: #41 in FY2021, #90 in FY2022 and not on the FY2024–FY2025 lists; up 33 since FY2022.
58	Axient LLC 2 awardees Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$33,575,009	0.2%	Rank history: #55 in FY2021, #55 in FY2022, #74 in FY2024 and #83 in FY2025; down 3 since FY2022.
59	Guardians of Honor, LLC Top NAICS codes 611710 Educational Support Services	$32,780,365	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	OPR LLC Top NAICS codes 541330 Engineering Services	$31,328,007	0.2%	Rank history: #59 in FY2021, #62 in FY2022, #60 in FY2024 and #59 in FY2025; up 2 since FY2022.
61	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$31,279,072	0.2%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and #43 in FY2025; up 213 since FY2022.
62	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$31,242,034	0.2%	Rank history: #89 in FY2021, #92 in FY2022, #44 in FY2024 and #52 in FY2025; up 30 since FY2022.
63	Halvik LLC Top NAICS codes 541330 Engineering Services	$31,000,000	0.2%	Rank history: not on the FY2021 list, #67 in FY2022, #78 in FY2024 and #54 in FY2025; up 4 since FY2022.
64	University of Texas System 12 awardees, including University of Texas At Austin, University of Texas At Dallas and University of Texas Medical Branch At Galveston Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541713 Research and Development in Nanotechnology	$30,970,542	0.2%	Rank history: #84 in FY2021, #75 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
65	Ensign-Bickford Industries Inc. 5 awardees, including Honeybee Robotics, Ltd. and Ensign-Bickford Aerospace & Defense Company Top NAICS codes 541330 Engineering Services 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$30,369,202	0.2%	Rank history: #95 in FY2021, #54 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
66	Massachusetts Institute of Technology Top NAICS codes 611310 Colleges, Universities, and Professional Schools 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$29,657,277	0.2%	Rank history: #65 in FY2021, #53 in FY2022, #68 in FY2024 and #57 in FY2025; down 13 since FY2022.
67	Arizona State University Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$27,626,345	0.2%	Rank history: #58 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
68	Honeybee Robotics LLC Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 811210 Electronic and Precision Equipment Repair and Maintenance	$26,606,537	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	University of Oklahoma Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$26,038,539	0.1%	Rank history: not on the FY2021 list, #100 in FY2022 and not on the FY2024–FY2025 lists; up 31 since FY2022.
70	Magnix USA Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$25,592,435	0.1%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
71	KBR Wyle Services, LLC Top NAICS codes 541330 Engineering Services	$25,538,924	0.1%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2024 and #10 in FY2025; up 127 since FY2022.
72	Universities Space Research Association Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$25,474,349	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Oak Ridge Associated Universities, Incorporated Top NAICS codes 541612 Human Resources Consulting Services	$25,336,435	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #89 in FY2024 and #66 in FY2025; up 12 since FY2022.
74	JP Donovan Construction Inc. Top NAICS codes 238120 Structural Steel and Precast Concrete Contractors 339999 All Other Miscellaneous Manufacturing 237990 Other Heavy and Civil Engineering Construction	$25,005,833	0.1%	Rank history: #64 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
75	UEI NVJ3APL7YKL3 Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing	$24,847,132	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 109 since FY2022.
76	Planet Labs PBC 2 awardees, including Planet Labs Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$24,666,668	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 53 since FY2022.
77	University of Alaska System 3 awardees, including University of Alaska Fairbanks and University of Alaska Anchorage Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561210 Facilities Support Services 611310 Colleges, Universities, and Professional Schools	$24,255,245	0.1%	Rank history: #81 in FY2021, #70 in FY2022, #83 in FY2024 and not on the FY2025 list; down 7 since FY2022.
78	Aerojet Rocketdyne, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing	$23,910,226	0.1%	Rank history: not on the FY2021 list, #47 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
79	Linde LLC Through Messer LLC Top NAICS codes 325120 Industrial Gas Manufacturing	$22,556,361	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 86 since FY2022.
80	Techtrans International Inc. Top NAICS codes 493110 General Warehousing and Storage 541930 Translation and Interpretation Services	$21,984,070	0.1%	Rank history: #72 in FY2021, #72 in FY2022, #84 in FY2024 and #71 in FY2025; down 8 since FY2022.
81	The Trustees of Columbia University In the City of New York 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$21,709,160	0.1%	Rank history: #85 in FY2021, #76 in FY2022, #73 in FY2024 and #92 in FY2025; down 5 since FY2022.
82	Aleut Building Company LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$21,572,354	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Stellar Solutions Inc. Top NAICS codes 541330 Engineering Services	$21,241,325	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2024 and #99 in FY2025; up 54 since FY2022.
84	Bay Area Environmental Research Institute	$20,896,846	0.1%	Rank history: #76 in FY2021, #79 in FY2022, #66 in FY2024 and #64 in FY2025; down 5 since FY2022.
85	The Leland Stanford Junior University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$20,889,514	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2024 list and #91 in FY2025; up 12 since FY2022.
86	Nextera Energy Inc. 2 awardees, including Florida Power & Light Company and Gexa Energy, LP Top NAICS codes 221122 Electric Power Distribution 221112 Fossil Fuel Electric Power Generation	$20,282,033	0.1%	Rank history: #69 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 21 since FY2022.
87	University of Hawaii Systems 3 awardees, including University of Hawaii Top NAICS codes 561210 Facilities Support Services 517410 Satellite Telecommunications	$19,774,945	0.1%	Rank history: #92 in FY2021, #96 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
88	Lead Builders Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$19,210,157	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 27 since FY2022.
89	Space Network Solutions LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$19,149,621	0.1%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2024 and #31 in FY2025; new.
90	New Horizons Aeronautics, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,971,478	0.1%	Rank history: #62 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
91	Spirit Aerosystems Holdings, Inc. 2 awardees, including FMI Solutions, Inc. and Spirit Aerosystems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 333992 Welding and Soldering Equipment Manufacturing	$18,882,591	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 100 since FY2022.
92	Erie Affiliates Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$18,867,090	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 30 since FY2022.
93	Analytical Mechanics Associates Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,539,724	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and #55 in FY2025; up 303 since FY2022.
94	Catholic University of America (The)	$18,491,871	0.1%	Rank history: #86 in FY2021, not on the FY2022 list, #87 in FY2024 and #70 in FY2025; up 10 since FY2022.
95	Nana Regional Corporation Inc 2 awardees, including Akima Support Operations, LLC and Affigent, LLC Top NAICS codes 561210 Facilities Support Services 541519 Other Computer Related Services	$18,313,667	0.1%	Rank history: #54 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
96	University Corporation for Atmospheric Research Top NAICS codes 541511 Custom Computer Programming Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561920 Convention and Trade Show Organizers	$18,032,757	0.1%	Rank history: #88 in FY2021, #81 in FY2022, #96 in FY2024 and not on the FY2025 list; down 15 since FY2022.
97	CBF Partners JV LLC Top NAICS codes 561110 Office Administrative Services	$17,643,558	0.1%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2024 and not on the FY2025 list; up 12 since FY2022.
98	Space Florida Through Center for the Advancement of Science In Space, Inc.	$17,383,000	0.1%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
99	Regents of the University of Michigan Top NAICS codes 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541713 Research and Development in Nanotechnology 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$17,334,161	0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #93 in FY2024 and #78 in FY2025; up 3 since FY2022.
100	Victory Solutions Inc Top NAICS codes 541330 Engineering Services	$17,209,167	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 82 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 $17.4 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