Top 100 Contractors in PSC AR11: Space R&D Services; Space Flight, Research and Supporting Activities; Basic Research, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Boeing Company 8 awardees, including Aurora Flight Sciences Corporation Top agencies NASA (National Aeronautics and Space Administration)	$1,028,867,638	47.4%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$323,301,511	14.9%	Rank history: #30 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
3	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)	$138,635,104	6.4%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and not on the FY2025 list; down 1 since FY2023.
4	Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration)	$69,308,126	3.2%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
5	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$68,281,196	3.1%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023 and #3 in FY2025; unchanged since FY2023.
6	Northrop Grumman Systems Corporation 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$55,361,401	2.6%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
7	University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration)	$43,537,504	2.0%	Rank history: #13 in FY2021, #24 in FY2022, #22 in FY2023 and #4 in FY2025; up 15 since FY2023.
8	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$42,754,805	2.0%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2023 and #7 in FY2025; down 5 since FY2023.
9	California Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$27,568,999	1.3%	Rank history: #12 in FY2021, #12 in FY2022, #12 in FY2023 and #12 in FY2025; up 3 since FY2023.
10	The University of Alabama System 2 awardees, including The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$19,044,157	0.9%	Rank history: #6 in FY2021, #8 in FY2022, #6 in FY2023 and not on the FY2025 list; down 4 since FY2023.
11	Catholic University of America (The) Top agencies NASA (National Aeronautics and Space Administration)	$17,612,813	0.8%	Rank history: #9 in FY2021, #10 in FY2022, #8 in FY2023 and #13 in FY2025; down 3 since FY2023.
12	Forward Edge Ai Inc. Top agencies USAF (Department of the Air Force)	$15,890,490	0.7%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and #19 in FY2025; up 20 since FY2023.
13	KBR Wyle Services LLC 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$14,590,293	0.7%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
14	University System of Maryland 3 awardees, including University of Maryland Baltimore County and University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration)	$14,059,170	0.6%	Rank history: #8 in FY2021, #5 in FY2022, #4 in FY2023 and not on the FY2025 list; down 10 since FY2023.
15	Science & Technology Corporation Top agencies NASA (National Aeronautics and Space Administration)	$11,281,701	0.5%	Rank history: #10 in FY2021, #15 in FY2022, #13 in FY2023 and #36 in FY2025; down 2 since FY2023.
16	Lockheed Martin Corporation 6 awardees Top agencies NASA (National Aeronautics and Space Administration)	$10,835,207	0.5%	Rank history: #21 in FY2021, #17 in FY2022, #24 in FY2023 and #17 in FY2025; up 8 since FY2023.
17	HP Enterprise Services LLC Through Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration)	$9,514,347	0.4%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023 and not on the FY2025 list; down 3 since FY2023.
18	Analytical Mechanics Associates Inc. Top agencies NASA (National Aeronautics and Space Administration)	$9,248,007	0.4%	Rank history: #11 in FY2021, #11 in FY2022, #11 in FY2023 and #11 in FY2025; down 7 since FY2023.
19	The Regents of the University of California Top agencies NASA (National Aeronautics and Space Administration)	$8,038,709	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	The University of Iowa Top agencies NASA (National Aeronautics and Space Administration)	$8,031,245	0.4%	Rank history: #14 in FY2021, #4 in FY2022, #9 in FY2023 and #14 in FY2025; down 11 since FY2023.
21	University of Maryland Baltimore County Top agencies NASA (National Aeronautics and Space Administration)	$7,582,661	0.3%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
22	The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$7,014,752	0.3%	Rank history: #34 in FY2021, not on the FY2022–FY2023 lists and #8 in FY2025; returned.
23	Nanoracks LLC Top agencies NASA (National Aeronautics and Space Administration)	$6,552,515	0.3%	Rank history: #37 in FY2021, #28 in FY2022, #18 in FY2023 and #23 in FY2025; down 5 since FY2023.
24	State of California Controllers Office 7 awardees, including The Regents of the University of California, University of California, Santa Barbara and University of California, San Diego Top agencies NASA (National Aeronautics and Space Administration)	$5,862,574	0.3%	Rank history: #31 in FY2021, #7 in FY2022, #7 in FY2023 and not on the FY2025 list; down 17 since FY2023.
25	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration)	$5,243,014	0.2%	Rank history: #20 in FY2021, #33 in FY2022, #17 in FY2023 and #16 in FY2025; down 8 since FY2023.
26	Spirit Aerosystems Holdings, Inc. Through Spirit Aerosystems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,130,167	0.2%	Rank history: #86 in FY2021, #92 in FY2022, #15 in FY2023 and #61 in FY2025; down 11 since FY2023.
27	RTX Corporation 8 awardees, including Rohr, Inc., Blue Canyon Technologies LLC and Collins Engine Nozzles, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,119,419	0.2%	Rank history: #15 in FY2021, #23 in FY2022, #33 in FY2023 and #22 in FY2025; up 6 since FY2023.
28	California Association for Research In Astronomy Top agencies NASA (National Aeronautics and Space Administration)	$4,775,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and #20 in FY2025; up 11 since FY2023.
29	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$4,724,087	0.2%	Rank history: #16 in FY2021, #19 in FY2022, #21 in FY2023 and not on the FY2025 list; down 8 since FY2023.
30	Orbital Micro Systems Inc. Top agencies Commerce (Department of Commerce)	$4,197,085	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2025 list; up 64 since FY2023.
31	Carnegie-Mellon University Top agencies NASA (National Aeronautics and Space Administration)	$4,135,986	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and #24 in FY2025; up 43 since FY2023.
32	Vector Atomic Inc Top agencies OSD (Office of the Secretary of Defense)	$4,000,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2025 list; down 4 since FY2023.
33	Navsight Holdings Inc. 2 awardees, including Spire Global Subsidiary, Inc. Top agencies Commerce (Department of Commerce)	$3,910,200	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2025 list; up 67 since FY2023.
34	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$3,632,833	0.2%	Rank history: #4 in FY2021, #6 in FY2022, #10 in FY2023 and not on the FY2025 list; down 24 since FY2023.
35	Electra.aero Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,485,340	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	General Electric Company 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$3,481,511	0.2%	Rank history: #17 in FY2021, #36 in FY2022, #45 in FY2023 and #55 in FY2025; up 9 since FY2023.
37	Zin Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,101,089	0.1%	Rank history: #40 in FY2021, #13 in FY2022, #27 in FY2023 and #29 in FY2025; down 10 since FY2023.
38	Wichita State University Top agencies NASA (National Aeronautics and Space Administration)	$3,095,936	0.1%	Rank history: #51 in FY2021, #21 in FY2022, not on the FY2023 list and #27 in FY2025; up 262 since FY2023.
39	Utah State University 2 awardees, including Utah State University Space Dynamics Laboratory Top agencies NASA (National Aeronautics and Space Administration)	$3,082,836	0.1%	Rank history: #7 in FY2021, #16 in FY2022, #30 in FY2023 and not on the FY2025 list; down 9 since FY2023.
40	The University of Toledo Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$3,051,265	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
41	University Corporation for Atmospheric Research Top agencies NASA (National Aeronautics and Space Administration)	$3,013,920	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #52 in FY2025; up 27 since FY2023.
42	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$2,860,937	0.1%	Rank history: #29 in FY2021, #25 in FY2022, #23 in FY2023 and #15 in FY2025; down 19 since FY2023.
43	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 list, #48 in FY2022, #51 in FY2023 and #48 in FY2025; up 8 since FY2023.
44	Regents of the University of Michigan Top agencies NASA (National Aeronautics and Space Administration)	$2,762,974	0.1%	Rank history: not on the FY2021 list, #32 in FY2022, #46 in FY2023 and #45 in FY2025; up 2 since FY2023.
45	The Leland Stanford Junior University Top agencies NASA (National Aeronautics and Space Administration)	$2,665,786	0.1%	Rank history: not on the FY2021 list, #27 in FY2022, #26 in FY2023 and #28 in FY2025; down 19 since FY2023.
46	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$2,463,492	0.1%	Rank history: not on the FY2021 list, #49 in FY2022, #55 in FY2023 and #37 in FY2025; up 9 since FY2023.
47	University of California, LOS Angeles Top agencies NASA (National Aeronautics and Space Administration)	$2,382,575	0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
48	Georgia TECH Research Corp Top agencies NASA (National Aeronautics and Space Administration)	$2,324,722	0.1%	Rank history: #50 in FY2021, #79 in FY2022, #72 in FY2023 and #51 in FY2025; up 24 since FY2023.
49	The Governing Council of the University of Toronto Top agencies NASA (National Aeronautics and Space Administration)	$2,231,195	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$2,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
51	Virginia Commonwealth University Through Virginia Polytechnic Institute & State University Top agencies NASA (National Aeronautics and Space Administration)	$1,970,521	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 162 since FY2023.
52	Tennessee Technological University Top agencies NASA (National Aeronautics and Space Administration)	$1,955,113	0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; up 68 since FY2023.
53	Arizona State University Top agencies NASA (National Aeronautics and Space Administration)	$1,904,178	0.1%	Rank history: #60 in FY2021, #45 in FY2022, #42 in FY2023 and not on the FY2025 list; down 11 since FY2023.
54	Future Engineers LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,890,569	0.1%	Rank history: #41 in FY2021, #42 in FY2022, #57 in FY2023 and not on the FY2025 list; up 3 since FY2023.
55	BAE Systems Space & Mission Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,821,825	0.1%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
56	Rise8 Inc. Top agencies USAF (Department of the Air Force)	$1,799,873	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	Advanced Space LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,785,735	0.1%	Rank history: #23 in FY2021, #22 in FY2022, #35 in FY2023 and not on the FY2025 list; down 22 since FY2023.
58	The Trustees of Columbia University In the City of New York Top agencies NASA (National Aeronautics and Space Administration)	$1,773,840	0.1%	Rank history: not on the FY2021 list, #31 in FY2022, #25 in FY2023 and #57 in FY2025; down 33 since FY2023.
59	Ensign-Bickford Industries Inc. Through Honeybee Robotics, Ltd. Top agencies NASA (National Aeronautics and Space Administration)	$1,770,393	0.1%	Rank history: #19 in FY2021, #18 in FY2022, #84 in FY2023 and not on the FY2025 list; up 25 since FY2023.
60	Duality Systems LLC Top agencies USAF (Department of the Air Force)	$1,761,840	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	San Jose State University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$1,754,844	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #25 in FY2025; up 12 since FY2023.
62	University of Notre Dame DU Lac Top agencies NASA (National Aeronautics and Space Administration)	$1,601,893	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 99 since FY2023.
63	Jackson Bond Enterprises, LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,561,410	0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; up 69 since FY2023.
64	New Mexico State University Top agencies NASA (National Aeronautics and Space Administration)	$1,550,081	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 38 since FY2023.
65	Scioteq LLC Through Airborne Systems North America of CA Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,481,457	0.1%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
66	Enduralock LLC Top agencies USAF (Department of the Air Force)	$1,480,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Rochester Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$1,389,415	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2023 list and not on the FY2025 list; up 142 since FY2023.
68	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$1,386,351	0.1%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #41 in FY2025; down 19 since FY2023.
69	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,285,662	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
70	National Council On Radiation Protection & Measurements Top agencies NASA (National Aeronautics and Space Administration)	$1,231,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and #67 in FY2025; down 6 since FY2023.
71	Devglobal Partners LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,174,754	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #69 in FY2025; down 24 since FY2023.
72	Sev1Tech, LLC Top agencies Navy (Department of the Navy)	$1,146,116	0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #59 in FY2025; down 43 since FY2023.
73	Advanced Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,040,914	<0.1%	Rank history: #24 in FY2021, #41 in FY2022, #37 in FY2023 and #73 in FY2025; down 36 since FY2023.
74	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$1,029,820	<0.1%	Rank history: not on the FY2021 list, #44 in FY2022, #48 in FY2023 and #70 in FY2025; down 26 since FY2023.
75	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,024,000	<0.1%	Rank history: #38 in FY2021, #84 in FY2022, #81 in FY2023 and not on the FY2025 list; up 6 since FY2023.
76	Brayton Energy LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,000,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Senseics Corporation Top agencies NASA (National Aeronautics and Space Administration)	$999,892	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 78 since FY2023.
78	Rolls-Royce Military Aero Engines Ltd Through Rolls-Royce North American Technologies Inc. Top agencies NASA (National Aeronautics and Space Administration)	$998,899	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 174 since FY2023.
79	Optical Sciences, LLC Top agencies NASA (National Aeronautics and Space Administration)	$958,118	<0.1%	Rank history: not on the FY2021 list, #68 in FY2022, #82 in FY2023 and #62 in FY2025; up 3 since FY2023.
80	Morgan State University Top agencies NASA (National Aeronautics and Space Administration)	$943,770	<0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #78 in FY2025; down 3 since FY2023.
81	Predictive Science Incorporated Top agencies NASA (National Aeronautics and Space Administration)	$930,170	<0.1%	Rank history: not on the FY2021 list, #46 in FY2022, not on the FY2023 list and #74 in FY2025; up 176 since FY2023.
82	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$865,285	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and not on the FY2025 list; down 20 since FY2023.
83	Rensselaer Polytechnic Institute Top agencies NASA (National Aeronautics and Space Administration)	$849,799	<0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and not on the FY2025 list; up 10 since FY2023.
84	University of Hawaii Top agencies NASA (National Aeronautics and Space Administration)	$844,371	<0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
85	Fibertek, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$818,763	<0.1%	Rank history: #62 in FY2021, #26 in FY2022, not on the FY2023 list and not on the FY2025 list; up 108 since FY2023.
86	General Atomics Aeronautical Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$796,902	<0.1%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; new.
87	Trustees of Dartmouth College Top agencies NASA (National Aeronautics and Space Administration)	$776,056	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Sanford Burnham Prebys Medical Discovery Institute Top agencies NASA (National Aeronautics and Space Administration)	$767,134	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 86 since FY2023.
89	Boise State University Top agencies NASA (National Aeronautics and Space Administration)	$756,395	<0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2025 list; up 7 since FY2023.
90	Quantum Space LLC Top agencies NASA (National Aeronautics and Space Administration)	$747,237	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	University of Massachusetts 2 awardees, including University of Massachusetts Lowell Top agencies NASA (National Aeronautics and Space Administration)	$744,319	<0.1%	Rank history: not on the FY2021 list, #47 in FY2022, #83 in FY2023 and not on the FY2025 list; down 8 since FY2023.
92	Amentum Services, Inc. Through Centra Technology, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$741,845	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Oklahoma State University Top agencies NASA (National Aeronautics and Space Administration)	$725,072	<0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #54 in FY2023 and not on the FY2025 list; down 39 since FY2023.
94	L3Harris Technologies, Inc. 2 awardees, including Aerojet Rocketdyne of DE, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$717,605	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Odyssey Systems Consulting Group, Ltd. Top agencies USAF (Department of the Air Force)	$711,442	<0.1%	Rank history: #68 in FY2021, #67 in FY2022, #76 in FY2023 and not on the FY2025 list; down 19 since FY2023.
96	Blue Marble Space Top agencies NASA (National Aeronautics and Space Administration)	$710,774	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #75 in FY2023 and #64 in FY2025; down 21 since FY2023.
97	Leach International Corp Through Airborne Systems North America of CA Inc. Top agencies NASA (National Aeronautics and Space Administration)	$699,873	<0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
98	University of Illinois Top agencies NASA (National Aeronautics and Space Administration)	$694,429	<0.1%	Rank history: #92 in FY2021, #54 in FY2022, #70 in FY2023 and not on the FY2025 list; down 28 since FY2023.
99	Ryzing Technologies LLC Top agencies NASA (National Aeronautics and Space Administration)	$667,229	<0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
100	Whittinghill Aerospace LLC Top agencies NASA (National Aeronautics and Space Administration)	$656,215	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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 $2.17 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