Top 100 Contractors in PSC AR: Space R&D Services, FY2024

Name: Top 100 Contractors in PSC AR: Space R&D Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 78% of FY2024 PSC AR contract dollars

Contract obligations: $9,970,201,190 Net of deobligations, by contracts coded PSC AR or a code under it
Contractors: 487 Parent companies with an obligation
Largest contractor: California Institute of Technology $2.22 billion, 21.7% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	California Institute of Technology 3 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,223,222,899	21.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	The Boeing Company 15 awardees, including Millennium Space Systems, Inc. and Aurora Flight Sciences Corporation Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$1,447,759,731	14.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	Northrop Grumman Corporation 9 awardees, including Northrop Grumman Systems Corporation and Space Logistics LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$1,291,236,561	12.6%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$717,934,843	7.0%	Rank history: #5 in FY2021, #4 in FY2022, #4 in FY2023 and #9 in FY2025; unchanged since FY2023.
5	Lockheed Martin Corporation 10 awardees Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) USAF (Department of the Air Force)	$692,834,690	6.8%	Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2025; unchanged since FY2023.
6	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$502,942,293	4.9%	Rank history: #22 in FY2021, #58 in FY2022, #7 in FY2023 and #4 in FY2025; up 1 since FY2023.
7	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$354,177,999	3.5%	Rank history: #42 in FY2021, #37 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
8	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$322,596,908	3.2%	Rank history: #18 in FY2021, #25 in FY2022, #8 in FY2023 and #8 in FY2025; unchanged since FY2023.
9	Association of Universities for Research In Astronomy, Inc. 3 awardees Top agencies NASA (National Aeronautics and Space Administration)	$250,433,678	2.4%	Rank history: #11 in FY2021, #8 in FY2022, #9 in FY2023 and #7 in FY2025; unchanged since FY2023.
10	York Space Systems LLC Top agencies USAF (Department of the Air Force)	$166,444,138	1.6%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
11	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$148,655,679	1.5%	Rank history: #8 in FY2021, #6 in FY2022, #6 in FY2023 and not on the FY2025 list; down 5 since FY2023.
12	L3Harris Technologies, Inc. 8 awardees, including Aerojet Rocketdyne, Inc. and Aerojet Rocketdyne of DE, Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$139,480,316	1.4%	Rank history: #37 in FY2021, #28 in FY2022, #10 in FY2023 and #11 in FY2025; down 2 since FY2023.
13	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$103,639,983	1.0%	Rank history: #12 in FY2021, #16 in FY2022, #13 in FY2023 and not on the FY2025 list; unchanged since FY2023.
14	Intuitive Machines, LLC Top agencies NASA (National Aeronautics and Space Administration)	$98,459,706	1.0%	Rank history: #15 in FY2021, #12 in FY2022, #24 in FY2023 and not on the FY2025 list; up 10 since FY2023.
15	United Launch Alliance, L.L.C. 2 awardees, including United Launch Services, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$91,637,029	0.9%	Rank history: #7 in FY2021, #9 in FY2022, #12 in FY2023 and #40 in FY2025; down 3 since FY2023.
16	The Aerospace Corporation Top agencies NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$82,410,509	0.8%	Rank history: #30 in FY2021, #21 in FY2022, #16 in FY2023 and #12 in FY2025; unchanged since FY2023.
17	Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$68,991,225	0.7%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
18	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$68,281,196	0.7%	Rank history: #21 in FY2021, #17 in FY2022, #18 in FY2023 and #14 in FY2025; unchanged since FY2023.
19	Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$68,241,389	0.7%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
20	Northrop Grumman Systems Corporation Top agencies NASA (National Aeronautics and Space Administration)	$54,500,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	The Charles Stark Draper Laboratory, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$48,419,230	0.5%	Rank history: not on the FY2021 list, #26 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
22	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$44,908,821	0.4%	Rank history: #25 in FY2021, #22 in FY2022, #22 in FY2023 and #18 in FY2025; unchanged since FY2023.
23	University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration)	$44,455,535	0.4%	Rank history: #79 in FY2021, #59 in FY2022, #58 in FY2023 and #15 in FY2025; up 35 since FY2023.
24	Firefly Aerospace Inc. Top agencies NASA (National Aeronautics and Space Administration)	$35,537,239	0.3%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
25	BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$30,805,517	0.3%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
26	Space Ground System Solutions, Inc. Top agencies Navy (Department of the Navy)	$25,012,929	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	Parsons Corporation 2 awardees, including Parsons Government Services Inc. and Space Ground System Solutions, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$23,393,898	0.2%	Rank history: #14 in FY2021, #14 in FY2022, #11 in FY2023 and #24 in FY2025; down 16 since FY2023.
28	The Regents of the University of Colorado 2 awardees Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$23,382,855	0.2%	Rank history: #19 in FY2021, #20 in FY2022, #28 in FY2023 and #27 in FY2025; unchanged since FY2023.
29	The University of Alabama System 2 awardees, including The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$19,910,698	0.2%	Rank history: #36 in FY2021, #30 in FY2022, #27 in FY2023 and not on the FY2025 list; down 2 since FY2023.
30	Catholic University of America (The) Top agencies NASA (National Aeronautics and Space Administration)	$17,609,865	0.2%	Rank history: #44 in FY2021, #46 in FY2022, #40 in FY2023 and #31 in FY2025; up 10 since FY2023.
31	Navsight Holdings Inc. Through Spire Global Subsidiary, Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce)	$16,606,800	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Aegis Aerospace Inc. 2 awardees, including Alpha Space Test and Research Alliance, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$16,311,336	0.2%	Rank history: #63 in FY2021, #48 in FY2022, #38 in FY2023 and #36 in FY2025; up 6 since FY2023.
33	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$16,194,996	0.2%	Rank history: #31 in FY2021, #23 in FY2022, #35 in FY2023 and not on the FY2025 list; up 2 since FY2023.
34	Arizona State University 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$15,955,470	0.2%	Rank history: #34 in FY2021, #38 in FY2022, #34 in FY2023 and #34 in FY2025; unchanged since FY2023.
35	Forward Edge Ai Inc. Top agencies USAF (Department of the Air Force)	$15,890,490	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #55 in FY2025; up 57 since FY2023.
36	Space Florida Through Center for the Advancement of Science In Space, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$15,800,000	0.2%	Rank history: #48 in FY2021, #35 in FY2022, #32 in FY2023 and not on the FY2025 list; down 4 since FY2023.
37	Science & Technology Corporation Top agencies NASA (National Aeronautics and Space Administration)	$15,618,591	0.2%	Rank history: #52 in FY2021, #53 in FY2022, #47 in FY2023 and #57 in FY2025; up 10 since FY2023.
38	Baylor College of Medicine Top agencies NASA (National Aeronautics and Space Administration)	$15,509,985	0.2%	Rank history: #41 in FY2021, #51 in FY2022, #39 in FY2023 and #35 in FY2025; up 1 since FY2023.
39	RTX Corporation 9 awardees, including Raytheon Company, Blue Canyon Technologies LLC and Rohr, Inc. Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$15,284,176	0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; up 292 since FY2023.
40	The Regents of the University of California 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$15,100,519	0.1%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
41	University System of Maryland 5 awardees, including University of Maryland, College Park, University of Maryland Baltimore County and University of Maryland Center for Environmental Science Top agencies NASA (National Aeronautics and Space Administration)	$14,765,581	0.1%	Rank history: #20 in FY2021, #15 in FY2022, #15 in FY2023 and not on the FY2025 list; down 26 since FY2023.
42	KBR Wyle Services LLC 3 awardees Top agencies NASA (National Aeronautics and Space Administration)	$14,698,947	0.1%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
43	Teledyne Technologies Incorporated 2 awardees, including Teledyne Brown Engineering, Inc. and Teledyne Energy Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$14,603,378	0.1%	Rank history: #28 in FY2021, #42 in FY2022, #36 in FY2023 and #54 in FY2025; down 7 since FY2023.
44	Technology Service Corp Top agencies Navy (Department of the Navy)	$13,547,392	0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #46 in FY2023 and #52 in FY2025; up 2 since FY2023.
45	The Trustees of Princeton University Top agencies NASA (National Aeronautics and Space Administration)	$13,233,494	0.1%	Rank history: #62 in FY2021, #49 in FY2022, #50 in FY2023 and #68 in FY2025; up 5 since FY2023.
46	HP Enterprise Services LLC Through Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$11,103,269	0.1%	Rank history: not on the FY2021 list, #31 in FY2022, #21 in FY2023 and not on the FY2025 list; down 25 since FY2023.
47	Nanoracks LLC Top agencies NASA (National Aeronautics and Space Administration)	$10,970,422	0.1%	Rank history: #75 in FY2021, #77 in FY2022, #65 in FY2023 and #58 in FY2025; up 18 since FY2023.
48	Sierra Nevada Company, LLC 4 awardees, including Sierra Space Corp Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$10,742,608	0.1%	Rank history: #57 in FY2021, #44 in FY2022, #54 in FY2023 and #43 in FY2025; up 6 since FY2023.
49	Government of the United States 2 awardees, including Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$10,590,248	0.1%	Rank history: #16 in FY2021, #13 in FY2022, #19 in FY2023 and not on the FY2025 list; down 30 since FY2023.
50	State of California Controllers Office 10 awardees, including The Regents of the University of California, University of California, Davis and University of California, San Diego Top agencies NASA (National Aeronautics and Space Administration)	$9,660,679	0.1%	Rank history: #23 in FY2021, #18 in FY2022, #23 in FY2023 and not on the FY2025 list; down 27 since FY2023.
51	Booz Allen Hamilton Holding Corporation Through Everwatch Solutions Inc. Top agencies Navy (Department of the Navy)	$9,330,986	0.1%	Rank history: #89 in FY2021, #88 in FY2022, not on the FY2023 list and #39 in FY2025; up 297 since FY2023.
52	Analytical Mechanics Associates Inc. Top agencies NASA (National Aeronautics and Space Administration)	$9,248,007	0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and #29 in FY2025; down 7 since FY2023.
53	The Leland Stanford Junior University Top agencies NASA (National Aeronautics and Space Administration)	$8,710,203	0.1%	Rank history: #68 in FY2021, #47 in FY2022, #37 in FY2023 and #44 in FY2025; down 16 since FY2023.
54	The University of Iowa Top agencies NASA (National Aeronautics and Space Administration)	$8,345,404	0.1%	Rank history: #71 in FY2021, #11 in FY2022, #43 in FY2023 and #32 in FY2025; down 11 since FY2023.
55	University System of New Hampshire Top agencies NASA (National Aeronautics and Space Administration)	$8,082,635	0.1%	Rank history: #73 in FY2021, #61 in FY2022, #64 in FY2023 and not on the FY2025 list; up 9 since FY2023.
56	Zin Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$7,951,437	0.1%	Rank history: #56 in FY2021, #41 in FY2022, #51 in FY2023 and #67 in FY2025; down 5 since FY2023.
57	Management Services Group, Inc. Top agencies USAF (Department of the Air Force)	$7,943,505	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	State of Arizona Through University of Arizona Top agencies NASA (National Aeronautics and Space Administration)	$7,939,159	0.1%	Rank history: #27 in FY2021, #32 in FY2022, #26 in FY2023 and not on the FY2025 list; down 32 since FY2023.
59	University of Maryland Baltimore County Top agencies NASA (National Aeronautics and Space Administration)	$7,765,887	0.1%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
60	The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$7,432,256	0.1%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
61	Packet Digital LLC Top agencies USAF (Department of the Air Force)	$7,223,087	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	Western Digital Technologies Inc. Top agencies USAF (Department of the Air Force)	$7,039,161	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Regents of the University of Michigan Top agencies NASA (National Aeronautics and Space Administration)	$6,957,091	0.1%	Rank history: #74 in FY2021, #64 in FY2022, #62 in FY2023 and #59 in FY2025; down 1 since FY2023.
64	University Corporation for Atmospheric Research Top agencies NASA (National Aeronautics and Space Administration)	$6,620,566	0.1%	Rank history: #59 in FY2021, #70 in FY2022, #57 in FY2023 and #83 in FY2025; down 7 since FY2023.
65	Raft LLC Top agencies USAF (Department of the Air Force)	$6,615,947	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and not on the FY2025 list; up 5 since FY2023.
66	Kentucky Science & Technology Corp Through STI Legacy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,665,114	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2025 list; up 10 since FY2023.
67	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$5,637,488	0.1%	Rank history: #47 in FY2021, #55 in FY2022, #82 in FY2023 and #46 in FY2025; up 15 since FY2023.
68	Honeybee Robotics LLC Top agencies NASA (National Aeronautics and Space Administration)	$5,476,105	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 94 since FY2023.
69	Spirit Aerosystems Holdings, Inc. Through Spirit Aerosystems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,130,167	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2025 list; down 13 since FY2023.
70	The University of Toledo Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$4,908,924	<0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; new.
71	University of California, LOS Angeles Top agencies NASA (National Aeronautics and Space Administration)	$4,871,047	<0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; new.
72	California Association for Research In Astronomy Top agencies NASA (National Aeronautics and Space Administration)	$4,775,000	<0.1%	Rank history: #93 in FY2021, #89 in FY2022, #74 in FY2023 and #56 in FY2025; up 2 since FY2023.
73	Board of Governers State University System of Florida 4 awardees, including University of Florida, The University of Central Florida Board of Trustees and Florida State University Top agencies NASA (National Aeronautics and Space Administration)	$4,757,446	<0.1%	Rank history: #43 in FY2021, #52 in FY2022, #48 in FY2023 and not on the FY2025 list; down 25 since FY2023.
74	Rise8 Inc. Top agencies USAF (Department of the Air Force)	$4,708,025	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	University of Arizona Top agencies NASA (National Aeronautics and Space Administration)	$4,459,285	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #73 in FY2023 and #23 in FY2025; down 2 since FY2023.
76	Lyten, Inc. Top agencies USAF (Department of the Air Force)	$4,430,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Carnegie-Mellon University Top agencies NASA (National Aeronautics and Space Administration)	$4,394,902	<0.1%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; up 61 since FY2023.
78	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$4,261,590	<0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2025 list; down 19 since FY2023.
79	Orbital Micro Systems Inc. Top agencies Commerce (Department of Commerce)	$4,197,085	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 138 since FY2023.
80	General Electric Company 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$4,074,810	<0.1%	Rank history: #55 in FY2021, #81 in FY2022, #63 in FY2023 and not on the FY2025 list; down 17 since FY2023.
81	L3HARRIS Aviation Products Inc 2 awardees, including Aerojet Rocketdyne, Inc. and L3Harris Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$4,031,096	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Wichita State University Top agencies NASA (National Aeronautics and Space Administration)	$4,005,936	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023 list and #72 in FY2025; up 137 since FY2023.
83	Vector Atomic Inc Top agencies OSD (Office of the Secretary of Defense)	$4,000,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and not on the FY2025 list; down 4 since FY2023.
84	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$3,946,010	<0.1%	Rank history: #70 in FY2021, #57 in FY2022, #67 in FY2023 and #86 in FY2025; down 17 since FY2023.
85	Zeno Power Systems Inc. Top agencies USAF (Department of the Air Force)	$3,841,963	<0.1%	Rank history: not on the FY2021 list, #73 in FY2022, #80 in FY2023 and not on the FY2025 list; down 5 since FY2023.
86	Astrobotic Technology Inc Top agencies NASA (National Aeronautics and Space Administration)	$3,774,157	<0.1%	Rank history: #13 in FY2021, #10 in FY2022, #20 in FY2023 and #91 in FY2025; down 66 since FY2023.
87	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force)	$3,695,500	<0.1%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
88	Electra.aero Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,485,340	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	Redwire Space Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,468,426	<0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; up 12 since FY2023.
90	Utah State University 2 awardees, including Utah State University Space Dynamics Laboratory Top agencies NASA (National Aeronautics and Space Administration)	$3,385,858	<0.1%	Rank history: #46 in FY2021, #67 in FY2022, #88 in FY2023 and not on the FY2025 list; down 2 since FY2023.
91	The Pennsylvania State University Top agencies NASA (National Aeronautics and Space Administration)	$3,310,209	<0.1%	Rank history: #78 in FY2021, #72 in FY2022, #96 in FY2023 and #82 in FY2025; up 5 since FY2023.
92	University of Texas System 7 awardees, including University of Texas At Austin, The University of Texas Southwestern Medical Center and The University of Texas At San Antonio Top agencies NASA (National Aeronautics and Space Administration)	$3,279,654	<0.1%	Rank history: #54 in FY2021, #68 in FY2022, #52 in FY2023 and not on the FY2025 list; down 40 since FY2023.
93	Silicon Technologies Inc Top agencies USAF (Department of the Air Force)	$3,276,916	<0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; up 21 since FY2023.
94	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$3,246,291	<0.1%	Rank history: #39 in FY2021, #36 in FY2022, #49 in FY2023 and #79 in FY2025; down 45 since FY2023.
95	Georgia TECH Research Corp Top agencies NASA (National Aeronautics and Space Administration)	$3,245,683	<0.1%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 24 since FY2023.
96	Purdue University Top agencies NASA (National Aeronautics and Space Administration)	$3,169,594	<0.1%	Rank history: #86 in FY2021, #75 in FY2022, #71 in FY2023 and not on the FY2025 list; down 25 since FY2023.
97	Harris Miller Miller & Hanson Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,014,520	<0.1%	Rank history: #82 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 5 since FY2023.
98	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$2,937,332	<0.1%	Rank history: #64 in FY2021, #78 in FY2022, #90 in FY2023 and #77 in FY2025; down 8 since FY2023.
99	Computational Physics, Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$2,772,067	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 37 since FY2023.
100	Veteran Enterprise Technology Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,614,269	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 487 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AR

Code	Net obligations	Largest contractor
AR11 Space R&D Services; Space Flight, Research and Supporting Activities; Basic Research	$2,154,539,806	The Boeing Company
AR12 Space R&D Services; Space Flight, Research and Supporting Activities; Applied Research	$1,431,694,626	California Institute of Technology
AR13 Space R&D Services; Space Flight, Research and Supporting Activities; Experimental Development	$802,145,784	Northrop Grumman Corporation
AR21 R&D – Space: Science/Applications (Basic Research)	$395,504,202	Northrop Grumman Corporation

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 $10.2 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
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

Who were the top 10 PSC AR contractors in FY2024?

1. California Institute of Technology ($2.22B), 2. The Boeing Company ($1.45B), 3. Northrop Grumman Corporation ($1.29B), 4. Space Exploration Technologies Corp. ($718M), 5. Lockheed Martin Corporation ($693M), 6. Blue Origin Washington, LLC ($503M), 7. The Johns Hopkins University Applied Physics Laboratory LLC ($354M), 8. Bechtel Corp ($323M), 9. Association of Universities for Research In Astronomy, Inc. ($250M), 10. York Space Systems LLC ($166M).

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