Top 100 Contractors in PSC AC: National Defense R&D Services, FY2024

Name: Top 100 Contractors in PSC AC: National Defense 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 52% of FY2024 PSC AC contract dollars

Contract obligations: $50,198,382,551 Net of deobligations, by contracts coded PSC AC or a code under it
Contractors: 3,161 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $8.19 billion, 15.9% 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	Lockheed Martin Corporation 34 awardees, including Sikorsky Aircraft Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$8,189,463,833	15.9%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Northrop Grumman Corporation 48 awardees, including Northrop Grumman Systems Corp Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$6,204,752,989	12.1%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	Advanced Technology International Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$2,570,438,891	5.0%	Rank history: #26 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2025; returned.
4	RTX Corporation 45 awardees, including Raytheon Company, Rockwell Collins, Inc. and RTX BBN Technologies, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$2,483,106,921	4.8%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #4 in FY2025; down 1 since FY2023.
5	The Boeing Company 35 awardees, including Millennium Space Systems, Inc., Aurora Flight Sciences Corporation and Boeing Satellite Systems, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$1,937,560,385	3.8%	Rank history: #5 in FY2021, #7 in FY2022, #8 in FY2023 and #10 in FY2025; up 3 since FY2023.
6	Massachusetts Institute of Technology 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,459,406,877	2.8%	Rank history: #4 in FY2021, #5 in FY2022, #4 in FY2023 and #6 in FY2025; down 2 since FY2023.
7	Textron Inc. 3 awardees, including Bell Textron Inc. and Textron Systems Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,026,445,987	2.0%	Rank history: #14 in FY2021, #19 in FY2022, #9 in FY2023 and #8 in FY2025; up 2 since FY2023.
8	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$975,730,173	1.9%	Rank history: #16 in FY2021, #12 in FY2022, #13 in FY2023 and #9 in FY2025; up 5 since FY2023.
9	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$972,388,046	1.9%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
10	The Mitre Corporation 2 awardees Top agencies AAFES (Department of Defense Army and Air Force Exchange Service) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$730,701,631	1.4%	Rank history: #50 in FY2021, #4 in FY2022, #5 in FY2023 and #13 in FY2025; down 5 since FY2023.
11	L3Harris Technologies, Inc. 23 awardees, including L3 Technologies, Inc., L3Harris Technologies Integrated Systems L.P. and L3 Adaptive Methods, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$687,717,890	1.3%	Rank history: #13 in FY2021, #9 in FY2022, #19 in FY2023 and #16 in FY2025; up 8 since FY2023.
12	BAE Systems 23 awardees, including BAE Systems Land and Armaments L.P., BAE Systems Information & Electronic Systems Integration Inc. and BAE Systems Technology Solutions & Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$669,572,026	1.3%	Rank history: #6 in FY2021, #10 in FY2022, #11 in FY2023 and #11 in FY2025; down 1 since FY2023.
13	National Security Technology Accelerator Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$665,058,756	1.3%	Rank history: not on the FY2021 list, #39 in FY2022, #15 in FY2023 and #7 in FY2025; up 2 since FY2023.
14	Science Applications International Corporation 6 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$640,157,614	1.2%	Rank history: #11 in FY2021, #11 in FY2022, #12 in FY2023 and #15 in FY2025; down 2 since FY2023.
15	Huntington Ingalls Industries, Inc. 7 awardees, including HII Mission Technologies Corp and Enlighten It Consulting LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$566,864,661	1.1%	Rank history: not on the FY2021 list, #25 in FY2022, not on the FY2023 list and #17 in FY2025; up 323 since FY2023.
16	General Electric Company 8 awardees, including GE Aviation Systems LLC, GE Energy Power Conversion Naval Systems Inc. and Torch Research, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$521,435,640	1.0%	Rank history: #15 in FY2021, #18 in FY2022, #22 in FY2023 and #25 in FY2025; up 6 since FY2023.
17	KBR Wyle Services LLC 7 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$520,859,754	1.0%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
18	Defense Energy Center of Excellence Top agencies USAF (Department of the Air Force)	$449,597,987	0.9%	Rank history: #17 in FY2021, #20 in FY2022, #10 in FY2023 and not on the FY2025 list; down 8 since FY2023.
19	General Dynamics Corporation 13 awardees, including General Dynamics Mission Systems, Inc., Applied Physical Sciences Corp and General Dynamics Land Systems Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$393,590,256	0.8%	Rank history: #12 in FY2021, #17 in FY2022, #24 in FY2023 and #12 in FY2025; up 5 since FY2023.
20	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$385,604,133	0.8%	Rank history: not on the FY2021 list, #55 in FY2022, #40 in FY2023 and #21 in FY2025; up 20 since FY2023.
21	Analytic Services Inc. Through Advanced Technology International Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$382,062,897	0.7%	Rank history: #8 in FY2021, #8 in FY2022, #6 in FY2023 and not on the FY2025 list; down 15 since FY2023.
22	Leidos Holdings, Inc. 9 awardees, including Leidos, Inc. and Dynetics, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency)	$369,331,907	0.7%	Rank history: #10 in FY2021, #14 in FY2022, #17 in FY2023 and #20 in FY2025; down 5 since FY2023.
23	Sierra Nevada Company, LLC 4 awardees, including Sierra Space Corp and Kutta Technologies, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$349,435,847	0.7%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
24	CACI International Inc. 7 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and LGS Innovations LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$328,893,601	0.6%	Rank history: #24 in FY2021, #30 in FY2022, #20 in FY2023 and #19 in FY2025; down 4 since FY2023.
25	York Space Systems LLC Top agencies USAF (Department of the Air Force)	$305,273,697	0.6%	Rank history: #71 in FY2021, #41 in FY2022, #26 in FY2023 and #45 in FY2025; up 1 since FY2023.
26	Raytheon Company 2 awardees Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$298,696,116	0.6%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
27	The Pennsylvania State University Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DTRA (Defense Threat Reduction Agency)	$289,890,094	0.6%	Rank history: #35 in FY2021, #23 in FY2022, #25 in FY2023 and #22 in FY2025; down 2 since FY2023.
28	Torch Technologies Inc. Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$269,540,057	0.5%	Rank history: #23 in FY2021, #15 in FY2022, #23 in FY2023 and #24 in FY2025; down 5 since FY2023.
29	Battelle Memorial Institute Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) Navy (Department of the Navy)	$183,488,759	0.4%	Rank history: #31 in FY2021, #28 in FY2022, #27 in FY2023 and #35 in FY2025; down 2 since FY2023.
30	Jacobs Engineering Group Inc. 4 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$179,518,798	0.3%	Rank history: #9 in FY2021, #13 in FY2022, #16 in FY2023 and not on the FY2025 list; down 14 since FY2023.
31	Carnegie Mellon University 3 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$173,079,089	0.3%	Rank history: #20 in FY2021, #26 in FY2022, #30 in FY2023 and #43 in FY2025; down 1 since FY2023.
32	DCS Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$172,541,383	0.3%	Rank history: #58 in FY2021, #83 in FY2022, #68 in FY2023 and #30 in FY2025; up 36 since FY2023.
33	Bluestaq LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$155,769,626	0.3%	Rank history: not on the FY2021 list, #76 in FY2022, #87 in FY2023 and #50 in FY2025; up 54 since FY2023.
34	Applied Research Associates, Inc. 2 awardees, including Neya Systems LLC Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$147,823,301	0.3%	Rank history: #52 in FY2021, #49 in FY2022, #29 in FY2023 and #37 in FY2025; down 5 since FY2023.
35	Amentum Technology, Inc. Top agencies MDA (DOD Missile Defense Agency)	$146,437,527	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Kbr, Inc. 7 awardees, including KBR Wyle Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$139,142,367	0.3%	Rank history: #22 in FY2021, #16 in FY2022, #14 in FY2023 and not on the FY2025 list; down 22 since FY2023.
37	Georgia TECH Applied Research Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$138,707,505	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
38	Rocket Lab National Security LLC Top agencies USAF (Department of the Air Force)	$138,658,464	0.3%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
39	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) DARPA (Defense Advanced Research Projects Agency)	$133,893,613	0.3%	Rank history: #7 in FY2021, #6 in FY2022, #7 in FY2023 and not on the FY2025 list; down 32 since FY2023.
40	Space Exploration Technologies Corp. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$128,959,526	0.3%	Rank history: #21 in FY2021, #24 in FY2022, #46 in FY2023 and #34 in FY2025; up 6 since FY2023.
41	Mag DS Corp Top agencies Army (Department of the Army)	$124,130,040	0.2%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
42	Anduril Industries Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$123,935,421	0.2%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; up 135 since FY2023.
43	Lynas USA LLC 2 awardees Top agencies Army (Department of the Army)	$123,513,488	0.2%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and not on the FY2025 list; down 6 since FY2023.
44	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$117,268,512	0.2%	Rank history: #30 in FY2021, #45 in FY2022, #32 in FY2023 and #46 in FY2025; down 12 since FY2023.
45	Caci Technologies LLC 4 awardees, including Caci, Inc. - Federal, Caci LGS Innovations LLC and LGS Innovations LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$112,063,767	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	Palantir Technologies Inc. Through Palantir USG Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$110,650,204	0.2%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
47	University of Dayton Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$109,848,862	0.2%	Rank history: #57 in FY2021, #56 in FY2022, #52 in FY2023 and #33 in FY2025; up 5 since FY2023.
48	Seacorp, LLC Top agencies Navy (Department of the Navy)	$109,658,074	0.2%	Rank history: #60 in FY2021, #61 in FY2022, #50 in FY2023 and #57 in FY2025; up 2 since FY2023.
49	Prescient Edge Corporation Top agencies Navy (Department of the Navy)	$108,979,726	0.2%	Rank history: not on the FY2021 list, #74 in FY2022, #69 in FY2023 and not on the FY2025 list; up 20 since FY2023.
50	Trax International Corporation Top agencies Army (Department of the Army)	$107,764,801	0.2%	Rank history: #25 in FY2021, #31 in FY2022, #39 in FY2023 and #53 in FY2025; down 11 since FY2023.
51	Jetzero, Inc. Top agencies USAF (Department of the Air Force)	$105,045,472	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #65 in FY2025; up 30 since FY2023.
52	Scitec Innovations LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$99,497,876	0.2%	Rank history: not on the FY2021 list, #62 in FY2022, #77 in FY2023 and #62 in FY2025; up 25 since FY2023.
53	Arctic Slope Regional Corporation 4 awardees, including Asrc Federal System Solutions LLC, Analytical Services, Inc. and Asrc Federal Professional Services, LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Army (Department of the Army)	$99,192,958	0.2%	Rank history: #45 in FY2021, #44 in FY2022, #47 in FY2023 and #44 in FY2025; down 6 since FY2023.
54	Fibertek, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$96,128,999	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, #64 in FY2023 and #94 in FY2025; up 10 since FY2023.
55	Deloitte Through Deloitte Consulting LLP Top agencies WHS (DOD Washington Headquarters Service) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$93,313,927	0.2%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
56	Diazyme Laboratories Inc. Through General Atomics Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$91,861,248	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	Amentum Services, Inc. 3 awardees, including Centra Technology, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$86,520,095	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Teledyne Technologies Incorporated 5 awardees, including Teledyne Brown Engineering, Inc., Teledyne Scientific & Imaging, LLC and Teledyne Flir Defense, LLC Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$86,356,420	0.2%	Rank history: #93 in FY2021, #89 in FY2022, #97 in FY2023 and #73 in FY2025; up 39 since FY2023.
59	Linquest Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$84,674,127	0.2%	Rank history: #87 in FY2021, #82 in FY2022, #67 in FY2023 and #63 in FY2025; up 8 since FY2023.
60	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$84,205,887	0.2%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
61	Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$82,901,822	0.2%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
62	Intrepid LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$82,404,786	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
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) Navy (Department of the Navy)	$81,134,949	0.2%	Rank history: #47 in FY2021, #65 in FY2022, #31 in FY2023 and not on the FY2025 list; down 32 since FY2023.
64	American Electronic Warfare Associates Incorporated Top agencies Navy (Department of the Navy)	$80,693,537	0.2%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
65	University of Texas System 3 awardees, including University of Texas At Austin and The University of Texas At San Antonio Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$79,535,063	0.2%	Rank history: #37 in FY2021, #34 in FY2022, #41 in FY2023 and not on the FY2025 list; down 24 since FY2023.
66	Tyvak Nano-Satellite Systems, Inc. Top agencies USAF (Department of the Air Force)	$79,259,132	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Assured Information Security, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$75,997,847	0.1%	Rank history: #29 in FY2021, #46 in FY2022, #54 in FY2023 and #74 in FY2025; down 13 since FY2023.
68	General Atomic Technologies Corporation 2 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$74,901,918	0.1%	Rank history: #18 in FY2021, #21 in FY2022, #21 in FY2023 and not on the FY2025 list; down 47 since FY2023.
69	Bluehalo, LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$74,616,927	0.1%	Rank history: #49 in FY2021, #58 in FY2022, #43 in FY2023 and not on the FY2025 list; down 26 since FY2023.
70	Micross Advanced Interconnect Technology LLC Top agencies Army (Department of the Army)	$74,277,768	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Southwest Research Institute Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency)	$74,207,719	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #70 in FY2025; down 12 since FY2023.
72	ICR Inc Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) USCYBERCOM (Department of Defense Cyber Command)	$73,478,640	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #59 in FY2025; down 21 since FY2023.
73	General Atomics Aeronautical Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$73,043,917	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
74	Radiance Technologies, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$71,974,692	0.1%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; new.
75	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$71,891,317	0.1%	Rank history: #72 in FY2021, #64 in FY2022, #73 in FY2023 and not on the FY2025 list; down 2 since FY2023.
76	Frontier Technology Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$71,885,769	0.1%	Rank history: #41 in FY2021, #54 in FY2022, #56 in FY2023 and #92 in FY2025; down 20 since FY2023.
77	Reliance Test & Technology, LLC Top agencies Navy (Department of the Navy)	$68,273,094	0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #58 in FY2023 and #71 in FY2025; down 19 since FY2023.
78	Joint Technical Solutions, LLC Top agencies Army (Department of the Army)	$64,301,300	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
79	Range Generation Next LLC Top agencies Army (Department of the Army)	$64,113,555	0.1%	Rank history: #42 in FY2021, #69 in FY2022, #63 in FY2023 and not on the FY2025 list; down 16 since FY2023.
80	County of Osceola Top agencies Army (Department of the Army)	$63,921,071	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$61,738,645	0.1%	Rank history: #66 in FY2021, #59 in FY2022, #55 in FY2023 and #89 in FY2025; down 26 since FY2023.
82	Seemann Composites, LLC 2 awardees, including Materials Sciences LLC Top agencies Navy (Department of the Navy)	$60,859,496	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 41 since FY2023.
83	University of Texas At Austin Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$60,710,145	0.1%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
84	Qinetiq Inc. Top agencies Army (Department of the Army)	$58,390,044	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
85	Toyon Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$57,801,474	0.1%	Rank history: #84 in FY2021, #72 in FY2022, #91 in FY2023 and not on the FY2025 list; up 6 since FY2023.
86	University of Washington Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$57,424,330	0.1%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; new.
87	IST Research, LLC Top agencies WHS (DOD Washington Headquarters Service) Army (Department of the Army) USAF (Department of the Air Force)	$57,378,882	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Parsons Corporation 4 awardees, including Parsons Government Services Inc., Parsons Technical Services Inc. and Polaris Alpha Advanced Systems Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$54,880,794	0.1%	Rank history: #51 in FY2021, #66 in FY2022, #65 in FY2023 and #55 in FY2025; down 23 since FY2023.
89	Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) Army (Department of the Army)	$54,809,678	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Jacobs Government Services Company 3 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$52,084,105	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Verus Research, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$51,781,812	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and not on the FY2025 list; down 34 since FY2023.
92	Physical Sciences Inc. 2 awardees, including Faraday Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$51,568,066	0.1%	Rank history: #70 in FY2021, #63 in FY2022, #89 in FY2023 and #84 in FY2025; down 3 since FY2023.
93	Spirit Aerosystems Holdings, Inc. 3 awardees, including Spirit Aerosystems Inc., FMI Solutions, Inc. and Intermat Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$51,263,221	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	North Point Defense Inc. Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force) NSA (Department of Defense National Security Agency)	$50,265,061	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 132 since FY2023.
95	Yulista Support Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$48,144,724	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
96	Kratos Defense & Security Solutions, Inc. 6 awardees, including Kratos S2, Inc., Kratos Defense & Rocket Support Services, Inc. and Kratos Sre, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$47,938,500	0.1%	Rank history: #36 in FY2021, #33 in FY2022, #44 in FY2023 and not on the FY2025 list; down 52 since FY2023.
97	Chesapeake Technology International, Corp. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$47,791,890	0.1%	Rank history: #90 in FY2021, #86 in FY2022, #92 in FY2023 and not on the FY2025 list; down 5 since FY2023.
98	Sossec Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$46,479,055	0.1%	Rank history: #80 in FY2021, #60 in FY2022, not on the FY2023 list and not on the FY2025 list; up 18 since FY2023.
99	Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$45,911,890	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Axient LLC Top agencies USAF (Department of the Air Force)	$45,399,927	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 4 since FY2023.

Show 75 more

100 of 3,161 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AC

Code	Net obligations	Largest contractor
AC13 National Defense R&D Services; Department of Defense – Military; Experimental Development	$15,485,820,000	Lockheed Martin Corporation
AC32 National Defense R&D Services; Defense-Related Activities; Applied Research	$6,983,435,407	The Mitre Corporation
AC12 National Defense R&D Services; Department of Defense – Military; Applied Research	$5,249,214,927	Advanced Technology International
AC33 National Defense R&D Services; Defense-Related Activities; Experimental Development	$3,344,445,775	Textron Inc.
AC15 National Defense R&D Services; Department of Defense – Military; R&D Facilities & Major Equipment	$2,466,631,720	Lockheed Martin Corporation
AC23 National Defense R&D Services; Atomic Energy Defense Activities; Experimental Development	$1,862,832,622	RTX Corporation
AC22 National Defense R&D Services; Atomic Energy Defense Activities; Applied Research	$1,628,847,258	Lockheed Martin Corporation
AC14 National Defense R&D Services; Department of Defense – Military; R&D Administrative Expenses	$1,460,826,729	The Boeing Company
AC11 National Defense R&D Services; Department of Defense – Military; Basic Research	$1,267,191,302	RTX Corporation
AC31 National Defense R&D Services; Defense-Related Activities; Basic Research	$803,170,556	Massachusetts Institute of Technology
AC21 National Defense R&D Services; Atomic Energy Defense Activities; Basic Research	$311,054,263	Bluestaq LLC
AC35 National Defense R&D Services; Defense-Related Activities; R&D Facilities & Major Equipment	$209,696,218	Palantir Technologies Inc.
AC63 R&D – Defense System: Electronics/Communication Equipment (Advanced Development)	$104,536,352	Leidos Holdings, Inc.
AC62 R&D – Defense System: Electronics/Communication Equipment (Applied Research/Exploratory Development)	$96,162,039	Northrop Grumman Corporation
AC34 National Defense R&D Services; Defense-Related Activities; R&D Administrative Expenses	$94,653,610	Seacorp, LLC

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 $51.4 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 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 AC contractors in FY2024?

1. Lockheed Martin Corporation ($8.19B), 2. Northrop Grumman Corporation ($6.2B), 3. Advanced Technology International ($2.57B), 4. RTX Corporation ($2.48B), 5. The Boeing Company ($1.94B), 6. Massachusetts Institute of Technology ($1.46B), 7. Textron Inc. ($1.03B), 8. Booz Allen Hamilton Holding Corporation ($976M), 9. The Johns Hopkins University Applied Physics Laboratory LLC ($972M), 10. The Mitre Corporation ($731M).

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