Top 100 Contractors in PSC AD93: R&D – Defense Other: Other (Advanced Development), FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 17 awardees Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$578,268,128	28.9%	Rank history: #1 in FY2022, #1 in FY2023, #2 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	RTX Corporation 14 awardees, including Raytheon Company, Blue Canyon Technologies LLC and RTX BBN Technologies, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$186,143,521	9.3%	Rank history: #4 in FY2022, #2 in FY2023, #5 in FY2024 and #4 in FY2025; up 2 since FY2020.
3	National Security Technology Accelerator Inc. Top agencies WHS (DOD Washington Headquarters Service)	$116,777,110	5.8%	Rank history: #3 in FY2022, #6 in FY2023, #7 in FY2024 and #9 in FY2025; down 1 since FY2020.
4	Radiance Technologies Inc. Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$81,743,445	4.1%	Rank history: #2 in FY2022, #3 in FY2023, #3 in FY2024 and #5 in FY2025; up 4 since FY2020.
5	L3Harris Technologies, Inc. 13 awardees, including L3 Technologies, Inc. and L3Harris Technologies Integrated Systems L.P. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$64,854,838	3.2%	Rank history: #10 in FY2022, #31 in FY2023, #34 in FY2024 and #15 in FY2025; up 12 since FY2020.
6	General Dynamics Corporation 6 awardees, including Applied Physical Sciences Corp, Electric Boat Corporation and General Dynamics Information Technology, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$56,309,702	2.8%	Rank history: #5 in FY2022, #4 in FY2023, #6 in FY2024 and #6 in FY2025; up 4 since FY2020.
7	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) DIA (Defense Intelligence Agency) Navy (Department of the Navy)	$50,202,290	2.5%	Rank history: #6 in FY2022, #5 in FY2023, #4 in FY2024 and #2 in FY2025; up 4 since FY2020.
8	Assured Information Security, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$39,298,346	2.0%	Rank history: #22 in FY2022, #10 in FY2023, #11 in FY2024 and #12 in FY2025; down 5 since FY2020.
9	CNF Technologies Corporation Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) OSD (Office of the Secretary of Defense)	$34,535,136	1.7%	Rank history: #7 in FY2022, not on the FY2023 list, #17 in FY2024 and not on the FY2025 list; up 7 since FY2020.
10	Black River Systems Company, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$29,083,735	1.5%	Rank history: #8 in FY2022, #11 in FY2023, #35 in FY2024 and #17 in FY2025; down 1 since FY2020.
11	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc., Gibbs & Cox Inc. and Dynetics, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$28,117,521	1.4%	Rank history: #27 in FY2022, #14 in FY2023, #20 in FY2024 and #11 in FY2025; up 11 since FY2020.
12	George Mason University Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$27,816,320	1.4%	Rank history: #12 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
13	Northrop Grumman Corporation 11 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) MDA (DOD Missile Defense Agency)	$27,262,238	1.4%	Rank history: #19 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
14	Global Infotek Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$27,134,692	1.4%	Rank history: #9 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
15	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$26,368,255	1.3%	Rank history: #11 in FY2022, #21 in FY2023, #41 in FY2024 and not on the FY2025 list; down 1 since FY2020.
16	Invictus International Consulting LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$25,803,873	1.3%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
17	Perspecta Inc. 3 awardees, including Peraton Technology Services Inc. and Peraton Labs Inc. Top agencies OSD (Office of the Secretary of Defense) DARPA (Defense Advanced Research Projects Agency) SDA (Space Development Agency)	$22,829,525	1.1%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
18	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$22,510,425	1.1%	Rank history: #17 in FY2022, #13 in FY2023, #9 in FY2024 and #13 in FY2025; down 5 since FY2020.
19	Southwest Research Institute Top agencies DTRA (Defense Threat Reduction Agency)	$21,007,700	1.1%	Rank history: #16 in FY2022, #8 in FY2023, #12 in FY2024 and #22 in FY2025; up 8 since FY2020.
20	The Boeing Company 7 awardees, including HRL Laboratories, LLC, Millennium Space Systems, Inc. and Boeing Intelligence & Analytics, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$19,321,041	1.0%	Rank history: #57 in FY2022, not on the FY2023 list, #1 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
21	International Business Machines Corporation Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$15,629,958	0.8%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
22	University of Dayton Top agencies USAF (Department of the Air Force)	$14,657,321	0.7%	Rank history: #24 in FY2022, #18 in FY2023, #15 in FY2024 and #14 in FY2025; up 13 since FY2020.
23	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$13,201,143	0.7%	Rank history: #83 in FY2022, #78 in FY2023, not on the FY2024 list and #34 in FY2025; down 4 since FY2020.
24	Bluehalo, LLC Top agencies USAF (Department of the Air Force)	$12,214,891	0.6%	Rank history: #52 in FY2022, not on the FY2023 list, #13 in FY2024 and not on the FY2025 list; up 12 since FY2020.
25	Blackhorse, A Parsons LLC Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$11,632,483	0.6%	Rank history: not on the FY2022–FY2023 lists, #16 in FY2024 and not on the FY2025 list; up 31 since FY2020.
26	The Charles Stark Draper Laboratory, Inc. Top agencies DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$11,361,888	0.6%	Rank history: #28 in FY2022, #28 in FY2023, #31 in FY2024 and not on the FY2025 list; down 1 since FY2020.
27	Space Systems/Loral LLC Through Maxar Mission Solutions Inc. Top agencies NGA (Department of Defense National Geospatial Intelligence Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$11,006,534	0.6%	Rank history: not on the FY2022–FY2023 lists, #66 in FY2024 and not on the FY2025 list; up 25 since FY2020.
28	Valley TECH Systems, Inc. Top agencies USAF (Department of the Air Force)	$10,889,967	0.5%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; up 29 since FY2020.
29	BAE Systems PLC 6 awardees, including BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$10,469,523	0.5%	Rank history: #14 in FY2022, #19 in FY2023, #30 in FY2024 and #10 in FY2025; down 17 since FY2020.
30	Exponent Inc. Top agencies Army (Department of the Army)	$9,993,319	0.5%	Rank history: not on the FY2022–FY2025 lists; up 37 since FY2020.
31	Science Applications International Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$9,664,283	0.5%	Rank history: #15 in FY2022, #17 in FY2023, #10 in FY2024 and #7 in FY2025; up 46 since FY2020.
32	Cubic Digital Intelligence Inc. Through Cubic Secure Communications, LLC Top agencies USAF (Department of the Air Force)	$8,898,891	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	North Point Defense Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$8,484,131	0.4%	Rank history: #79 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
34	Florida Institute for Human & Machine Cognition Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$8,284,623	0.4%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
35	Kudu Dynamics LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$7,927,652	0.4%	Rank history: #36 in FY2022, #30 in FY2023, #8 in FY2024 and not on the FY2025 list; down 4 since FY2020.
36	Cubrc, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$7,923,092	0.4%	Rank history: #35 in FY2022, #34 in FY2023, #63 in FY2024 and not on the FY2025 list; up 25 since FY2020.
37	The Pennsylvania State University Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) NGA (Department of Defense National Geospatial Intelligence Agency)	$7,728,755	0.4%	Rank history: #42 in FY2022, #48 in FY2023, #58 in FY2024 and not on the FY2025 list; up 3 since FY2020.
38	Ultra Electronics Forensic Technology Inc Through Undersea Sensor Systems, Inc. Top agencies Navy (Department of the Navy)	$7,680,500	0.4%	Rank history: #23 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
39	General Electric Company 3 awardees, including GE Aviation Systems LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$7,513,288	0.4%	Rank history: #26 in FY2022, #12 in FY2023, not on the FY2024 list and #27 in FY2025; up 32 since FY2020.
40	Premier Technology, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$6,756,108	0.3%	Rank history: #45 in FY2022, #32 in FY2023, #24 in FY2024 and not on the FY2025 list; up 10 since FY2020.
41	Aerojet Rocketdyne Holdings, Inc. Through Aerojet Rocketdyne Inc. Top agencies MDA (DOD Missile Defense Agency) DARPA (Defense Advanced Research Projects Agency)	$6,722,388	0.3%	Rank history: #31 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
42	Telesat Canada Through Telesat U.s. Services LLC Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$6,501,136	0.3%	Rank history: #68 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
43	BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy)	$6,298,000	0.3%	Rank history: not on the FY2022–FY2025 lists; up 107 since FY2020.
44	Par Technology Corporation Through Par Government Systems Corporation Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$6,222,948	0.3%	Rank history: #37 in FY2022, #24 in FY2023, #21 in FY2024 and #23 in FY2025; unchanged since FY2020.
45	Serco North America (Holdings) Inc Through Serco Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,911,164	0.3%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; up 82 since FY2020.
46	Qinetiq Group PLC 2 awardees, including Qinetiq Inc. and Qinetiq Special Projects, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,720,148	0.3%	Rank history: #13 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
47	Metron Incorporated Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$5,622,553	0.3%	Rank history: #51 in FY2022, #35 in FY2023, #38 in FY2024 and not on the FY2025 list; up 8 since FY2020.
48	Herrick Technology Laboratories Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$5,611,818	0.3%	Rank history: #38 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2020.
49	Intific Inc 3 awardees, including Cubic Defense Applications, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,476,914	0.3%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
50	By Light Professional It Services LLC Through Cole Engineering Services, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,289,799	0.3%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
51	Trellisware Technologies Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,251,185	0.3%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
52	BAE Systems Land & Armaments L.P. 5 awardees, including BAE Systems Information & Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$5,225,786	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	HP Enterprise Services LLC 4 awardees, including Peraton Inc. and Peraton Labs Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$5,189,109	0.3%	Rank history: #29 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
54	University of Southern California Top agencies DARPA (Defense Advanced Research Projects Agency)	$4,760,900	0.2%	Rank history: #39 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
55	Woods Hole Oceanographic Institution Top agencies Navy (Department of the Navy)	$4,676,612	0.2%	Rank history: #53 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 110 since FY2020.
56	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) NGA (Department of Defense National Geospatial Intelligence Agency)	$4,338,656	0.2%	Rank history: #91 in FY2022, #64 in FY2023, #61 in FY2024 and not on the FY2025 list; down 19 since FY2020.
57	Caci Photonics, LLC Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$4,046,976	0.2%	Rank history: not on the FY2022–FY2023 lists, #68 in FY2024 and not on the FY2025 list; down 33 since FY2020.
58	Teksynap Corporation Top agencies DTRA (Defense Threat Reduction Agency)	$3,906,570	0.2%	Rank history: #48 in FY2022, #47 in FY2023, #60 in FY2024 and not on the FY2025 list; up 12 since FY2020.
59	Moebius Solutions Inc. Top agencies Navy (Department of the Navy)	$3,584,810	0.2%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; up 70 since FY2020.
60	Sierra Nevada Company, LLC 2 awardees Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$3,578,706	0.2%	Rank history: #76 in FY2022, #51 in FY2023, #40 in FY2024 and not on the FY2025 list; up 21 since FY2020.
61	Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$3,562,450	0.2%	Rank history: not on the FY2022–FY2025 lists; up 236 since FY2020.
62	P & J Robinson Corp Top agencies Navy (Department of the Navy)	$3,525,000	0.2%	Rank history: #41 in FY2022, #74 in FY2023, #49 in FY2024 and not on the FY2025 list; up 122 since FY2020.
63	Accelint AI, LLC Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$3,521,458	0.2%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
64	S2 Corporation Top agencies Navy (Department of the Navy)	$3,501,839	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 11 since FY2020.
65	Northrop Grumman Systems Corporation Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,477,406	0.2%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
66	Heron Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$3,221,212	0.2%	Rank history: #44 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 184 since FY2020.
67	Volant Associates LLC Top agencies USAF (Department of the Air Force)	$3,035,435	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
68	Elemental Excelerator, Inc. Top agencies Navy (Department of the Navy)	$3,000,000	0.1%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 19 since FY2020.
69	Nalej Corp Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,984,931	0.1%	Rank history: not on the FY2022 list, #86 in FY2023, #18 in FY2024 and #21 in FY2025; up 100 since FY2020.
70	Nehemiah Security, Inc. Through Siege Technologies, LLC Top agencies USAF (Department of the Air Force)	$2,888,010	0.1%	Rank history: #90 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2020.
71	Pierre John M LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,840,410	0.1%	Rank history: #58 in FY2022, #44 in FY2023, #55 in FY2024 and not on the FY2025 list; up 157 since FY2020.
72	World Wide Technology Holding Co. Inc. Through Asynchrony Solutions, LLC Top agencies DTRA (Defense Threat Reduction Agency)	$2,790,933	0.1%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; up 38 since FY2020.
73	CACI International Inc. 3 awardees, including Caci Technologies, LLC and Caci, Inc. - Federal Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$2,787,881	0.1%	Rank history: #20 in FY2022, #25 in FY2023, #25 in FY2024 and not on the FY2025 list; down 34 since FY2020.
74	Cubic Defense Applications Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,699,699	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Parsons Corporation 5 awardees, including Parsons Government Services Inc. and Blackhorse, A Parsons LLC Top agencies Navy (Department of the Navy)	$2,623,586	0.1%	Rank history: #30 in FY2022, #20 in FY2023, #23 in FY2024 and #16 in FY2025; down 43 since FY2020.
76	Tangram Flex Inc. Top agencies USAF (Department of the Air Force)	$2,488,893	0.1%	Rank history: #60 in FY2022, #52 in FY2023, #37 in FY2024 and #24 in FY2025; up 117 since FY2020.
77	Pacific Marine & Supply Company Ltd Through Pacmar Technologies LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,479,130	0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
78	Episys Science Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,338,137	0.1%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
79	Calspan Corporation Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,206,855	0.1%	Rank history: not on the FY2022–FY2025 lists; up 37 since FY2020.
80	Alion Science and Technology Corporation 2 awardees, including HII Mission Technologies Corp Top agencies DTRA (Defense Threat Reduction Agency) OSD (Office of the Secretary of Defense)	$2,188,204	0.1%	Rank history: #99 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
81	Kyrus Tech, LLC Top agencies DTRA (Defense Threat Reduction Agency)	$2,184,928	0.1%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 56 since FY2020.
82	Arete Associates Top agencies Navy (Department of the Navy)	$2,112,633	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
83	Spaceflight Industries Inc. Through Blacksky Geospatial Solutions, LLC Top agencies NGA (Department of Defense National Geospatial Intelligence Agency)	$2,081,086	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
84	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense)	$2,066,096	0.1%	Rank history: #56 in FY2022, #63 in FY2023, #32 in FY2024 and #18 in FY2025; up 24 since FY2020.
85	University of Maine System Top agencies Army (Department of the Army)	$1,885,000	0.1%	Rank history: #25 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
86	Edge Case Research Inc. Top agencies Navy (Department of the Navy)	$1,880,464	0.1%	Rank history: #78 in FY2022, #61 in FY2023, #39 in FY2024 and not on the FY2025 list; up 99 since FY2020.
87	Caci Azure Summit Technology, LLC Top agencies Navy (Department of the Navy)	$1,771,679	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
88	Raytheon Company Top agencies Navy (Department of the Navy)	$1,742,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 201 since FY2020.
89	Vector Atomic Inc. Top agencies Navy (Department of the Navy)	$1,701,126	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
90	Gibbs & Cox, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,607,634	0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
91	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top agencies Navy (Department of the Navy)	$1,576,000	0.1%	Rank history: #73 in FY2022, not on the FY2023 list, #36 in FY2024 and #20 in FY2025; up 104 since FY2020.
92	The Johns Hopkins University Through The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Army (Department of the Army)	$1,545,422	0.1%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
93	Red Wire Technologies LLC Top agencies DTRA (Defense Threat Reduction Agency)	$1,532,552	0.1%	Rank history: #65 in FY2022, not on the FY2023 list, #29 in FY2024 and #19 in FY2025; up 2 since FY2020.
94	Charles River Analytics, Inc. Top agencies Navy (Department of the Navy)	$1,503,334	0.1%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
95	Toyon Research Corporation Top agencies USAF (Department of the Air Force)	$1,500,000	0.1%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
96	Nevada State Veterans Home Through Board of Regents of Nevada System of Higher Education Top agencies DTRA (Defense Threat Reduction Agency)	$1,496,825	0.1%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; up 45 since FY2020.
97	Cromulence LLC Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$1,443,525	0.1%	Rank history: #55 in FY2022, #40 in FY2023, #48 in FY2024 and not on the FY2025 list; up 63 since FY2020.
98	Geost, LLC Top agencies USAF (Department of the Air Force)	$1,382,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 90 since FY2020.
99	Thomson Reuters Special Services LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,276,240	0.1%	Rank history: #21 in FY2022, #22 in FY2023, #19 in FY2024 and not on the FY2025 list; up 106 since FY2020.
100	Oceanit Laboratories Inc. Top agencies Navy (Department of the Navy)	$1,250,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 114 since FY2020.

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 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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