Top 100 Contractors in PSC AC11: National Defense R&D Services; Department of Defense – Military; Basic Research, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Johns Hopkins University Through The Johns Hopkins University Applied Physics Laboratory LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$52,236,503	9.9%	Rank history: #59 in FY2021, #2 in FY2023, #12 in FY2024 and not on the FY2025 list; up 58 since FY2021.
2	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$38,725,335	7.4%	Rank history: #3 in FY2021, #4 in FY2023, #5 in FY2024 and #5 in FY2025; up 1 since FY2021.
3	RTX Corporation 9 awardees, including Raytheon Company and RTX BBN Technologies, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$36,898,475	7.0%	Rank history: #1 in FY2021, #10 in FY2023, #1 in FY2024 and #2 in FY2025; down 2 since FY2021.
4	Lockheed Martin Corporation 7 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$25,825,393	4.9%	Rank history: #2 in FY2021, #1 in FY2023, #2 in FY2024 and #3 in FY2025; down 2 since FY2021.
5	The Boeing Company 10 awardees, including HRL Laboratories, LLC, Digital Receiver Technology, Inc. and Millennium Space Systems, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$21,138,126	4.0%	Rank history: #16 in FY2021, #12 in FY2023, #7 in FY2024 and #7 in FY2025; up 11 since FY2021.
6	Fibertek, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$18,019,037	3.4%	Rank history: #17 in FY2021, #8 in FY2023, #11 in FY2024 and #20 in FY2025; up 11 since FY2021.
7	Wichita State University Top agencies USAF (Department of the Air Force)	$17,418,150	3.3%	Rank history: #6 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
8	Jacobs Engineering Group Inc. 2 awardees, including Amentum Technology, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$15,961,930	3.0%	Rank history: not on the FY2021 list, #6 in FY2023, #18 in FY2024 and not on the FY2025 list; up 113 since FY2021.
9	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) NASA (National Aeronautics and Space Administration)	$9,531,634	1.8%	Rank history: #5 in FY2021, #16 in FY2023, #10 in FY2024 and #14 in FY2025; down 4 since FY2021.
10	Revacomm Inc 2 awardees Top agencies USAF (Department of the Air Force)	$8,036,235	1.5%	Rank history: #23 in FY2021, #23 in FY2023, #42 in FY2024 and not on the FY2025 list; up 13 since FY2021.
11	Icr, Inc. Top agencies USAF (Department of the Air Force)	$7,385,464	1.4%	Rank history: #9 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
12	Camgian Corporation Top agencies Army (Department of the Army)	$7,199,979	1.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
13	Verus Research, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$6,301,386	1.2%	Rank history: #18 in FY2021, not on the FY2023 list, #77 in FY2024 and not on the FY2025 list; up 5 since FY2021.
14	L3Harris Technologies, Inc. 4 awardees, including L3 Technologies, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Army (Department of the Army)	$6,153,488	1.2%	Rank history: #7 in FY2021, #14 in FY2023, #20 in FY2024 and #19 in FY2025; down 7 since FY2021.
15	Wintec Arrowmaker Inc. Top agencies Army (Department of the Army)	$5,874,394	1.1%	Rank history: not on the FY2021 list, #32 in FY2023 and not on the FY2024–FY2025 lists; new.
16	Physical Sciences Inc. 2 awardees, including Faraday Technology, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$5,330,921	1.0%	Rank history: #11 in FY2021, #26 in FY2023, #27 in FY2024 and #30 in FY2025; down 5 since FY2021.
17	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,963,243	0.9%	Rank history: #67 in FY2021 and not on the FY2023–FY2025 lists; up 50 since FY2021.
18	CACI International Inc. 3 awardees, including Caci, Inc. - Federal, Mastodon Design LLC and Caci Photonics, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$4,145,485	0.8%	Rank history: not on the FY2021 list, #19 in FY2023, #24 in FY2024 and #33 in FY2025; up 408 since FY2021.
19	Bluehalo, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$3,880,445	0.7%	Rank history: #19 in FY2021, #47 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
20	Qinetiq Group PLC Through Qinetiq Inc. Top agencies Army (Department of the Army)	$3,717,256	0.7%	Rank history: not on the FY2021 list, #5 in FY2023, #19 in FY2024 and not on the FY2025 list; new.
21	Xerox Holdings Corp Through Palo Alto Research Center LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,678,058	0.7%	Rank history: #70 in FY2021, #64 in FY2023 and not on the FY2024–FY2025 lists; up 49 since FY2021.
22	University of Southern California Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,385,251	0.6%	Rank history: #28 in FY2021, #51 in FY2023, #86 in FY2024 and not on the FY2025 list; up 6 since FY2021.
23	Charles River Analytics, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHRA (Defense Human Resources Activity)	$3,324,532	0.6%	Rank history: #33 in FY2021, #46 in FY2023, #58 in FY2024 and #79 in FY2025; up 10 since FY2021.
24	Triton Systems, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$2,942,077	0.6%	Rank history: #20 in FY2021, #33 in FY2023, #34 in FY2024 and #57 in FY2025; down 4 since FY2021.
25	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,865,725	0.5%	Rank history: #26 in FY2021, not on the FY2023 list, #50 in FY2024 and #26 in FY2025; up 1 since FY2021.
26	National Opinion Research Center Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,846,526	0.5%	Rank history: not on the FY2021 list, #55 in FY2023 and not on the FY2024–FY2025 lists; new.
27	Mainstream Engineering Corp Top agencies DMEA (Defense Microelectronics Activity) Army (Department of the Army) Navy (Department of the Navy)	$2,694,712	0.5%	Rank history: not on the FY2021 list, #45 in FY2023 and not on the FY2024–FY2025 lists; up 116 since FY2021.
28	General Electric Company 2 awardees Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,497,002	0.5%	Rank history: #34 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
29	The Pennsylvania State University Top agencies Navy (Department of the Navy)	$2,386,813	0.5%	Rank history: not on the FY2021 list, #37 in FY2023, #60 in FY2024 and #90 in FY2025; new.
30	Northwestern University 2 awardees Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency)	$2,294,703	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
31	Kitware Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,195,796	0.4%	Rank history: #44 in FY2021 and not on the FY2023–FY2025 lists; up 13 since FY2021.
32	CFD Research Corporation Top agencies DMEA (Defense Microelectronics Activity) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,069,572	0.4%	Rank history: #87 in FY2021, #85 in FY2023, #95 in FY2024 and not on the FY2025 list; up 55 since FY2021.
33	Intellisense Systems Inc 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,999,157	0.4%	Rank history: #24 in FY2021, #60 in FY2023, #73 in FY2024 and #85 in FY2025; down 9 since FY2021.
34	Rogue Space Systems Corp Top agencies USAF (Department of the Air Force)	$1,998,101	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
35	University System of Maryland Through University of Maryland, College Park Top agencies DARPA (Defense Advanced Research Projects Agency) OSD (Office of the Secretary of Defense)	$1,935,877	0.4%	Rank history: #8 in FY2021, #18 in FY2023 and not on the FY2024–FY2025 lists; down 27 since FY2021.
36	Applied Research Associates, Inc. Top agencies OSD (Office of the Secretary of Defense)	$1,888,071	0.4%	Rank history: #10 in FY2021, #7 in FY2023, #13 in FY2024 and #13 in FY2025; down 26 since FY2021.
37	Strategic Analysis, Inc. Top agencies Navy (Department of the Navy)	$1,847,993	0.4%	Rank history: #51 in FY2021, #61 in FY2023, #90 in FY2024 and #77 in FY2025; up 14 since FY2021.
38	Bascom Hunter Technologies, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$1,779,683	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 134 since FY2021.
39	Cornerstone Research Group Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,702,266	0.3%	Rank history: #21 in FY2021 and not on the FY2023–FY2025 lists; down 18 since FY2021.
40	Enig Associates, Inc. Top agencies Army (Department of the Army)	$1,699,775	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
41	Fraym, Inc. Top agencies USAF (Department of the Air Force)	$1,699,150	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
42	Sensormetrix Inc. Top agencies Army (Department of the Army)	$1,698,163	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
43	Aquila, Inc. Top agencies Army (Department of the Army)	$1,671,100	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 374 since FY2021.
44	Easy Aerial Inc. Top agencies USAF (Department of the Air Force)	$1,640,000	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
45	Creare LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,613,646	0.3%	Rank history: not on the FY2021 list, #65 in FY2023, #74 in FY2024 and #63 in FY2025; up 58 since FY2021.
46	Georgia TECH Research Corp 2 awardees, including Georgia TECH Applied Research Corp Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency)	$1,473,271	0.3%	Rank history: #35 in FY2021 and not on the FY2023–FY2025 lists; down 11 since FY2021.
47	Nanohmics Inc. Top agencies DMEA (Defense Microelectronics Activity) Army (Department of the Army) Navy (Department of the Navy)	$1,425,998	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #40 in FY2024 and not on the FY2025 list; up 180 since FY2021.
48	Luna Innovations Incorporated 2 awardees, including Luna Labs USA LLC Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$1,408,961	0.3%	Rank history: #73 in FY2021, #89 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2021.
49	Mitek Analytics, Inc. Top agencies USAF (Department of the Air Force)	$1,385,000	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #79 in FY2024 and not on the FY2025 list; new.
50	International Business Machines Corporation Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,384,494	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
51	Carbon Sic Technologies, Inc. Top agencies Army (Department of the Army)	$1,320,804	0.3%	Rank history: not on the FY2021 list, #96 in FY2023 and not on the FY2024–FY2025 lists; up 369 since FY2021.
52	Margin Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,314,338	0.2%	Rank history: not on the FY2021 list, #54 in FY2023 and not on the FY2024–FY2025 lists; up 70 since FY2021.
53	Alphacore Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,271,582	0.2%	Rank history: #74 in FY2021 and not on the FY2023–FY2025 lists; up 21 since FY2021.
54	Carnegie-Mellon University Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,245,540	0.2%	Rank history: #81 in FY2021 and not on the FY2023–FY2025 lists; up 27 since FY2021.
55	PC Krause & Associates Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,190,073	0.2%	Rank history: #55 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
56	Mid Michigan Research LLC Top agencies Army (Department of the Army)	$1,170,663	0.2%	Rank history: #65 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
57	HP Enterprise Services LLC Through Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,169,194	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 91 since FY2021.
58	Attollo Engineering, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,169,003	0.2%	Rank history: #75 in FY2021 and not on the FY2023–FY2025 lists; up 17 since FY2021.
59	Oleandr Scientific LLC Top agencies Army (Department of the Army)	$1,150,000	0.2%	Rank history: #58 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
60	Astin Holdings L.P. Through Lynntech Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,148,711	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 229 since FY2021.
61	Texas Research International Inc. Through Texas Research Institute , Austin, Inc. Top agencies Navy (Department of the Navy)	$1,139,965	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 48 since FY2021.
62	Aptima Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$1,139,956	0.2%	Rank history: not on the FY2021 list, #53 in FY2023 and not on the FY2024–FY2025 lists; up 273 since FY2021.
63	Agiledelta, Inc. Top agencies USAF (Department of the Air Force)	$1,131,350	0.2%	Rank history: #66 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
64	Precision Combustion, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,121,576	0.2%	Rank history: #89 in FY2021 and not on the FY2023–FY2025 lists; up 25 since FY2021.
65	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$1,116,000	0.2%	Rank history: not on the FY2021 list, #90 in FY2023 and not on the FY2024–FY2025 lists; new.
66	Novateur Research Solutions LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$1,107,464	0.2%	Rank history: #64 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
67	Vision Products LLC Top agencies Army (Department of the Army)	$1,105,785	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
68	Galley Power LLC Top agencies Army (Department of the Army)	$1,102,221	0.2%	Rank history: not on the FY2021 list, #41 in FY2023 and not on the FY2024–FY2025 lists; new.
69	Autonomous Solutions Inc. Top agencies Army (Department of the Army)	$1,097,350	0.2%	Rank history: #63 in FY2021 and not on the FY2023–FY2025 lists; down 6 since FY2021.
70	Filtration Solutions, Inc. Top agencies Army (Department of the Army)	$1,081,089	0.2%	Rank history: #60 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
71	QED Secure Solutions LLC Top agencies USAF (Department of the Air Force)	$1,068,996	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
72	Teleswivel LLC Top agencies Army (Department of the Army)	$1,044,384	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
73	Ultramet Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,030,000	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
74	Nextech Materials, Ltd. Top agencies Army (Department of the Army)	$1,021,465	0.2%	Rank history: #56 in FY2021 and not on the FY2023–FY2025 lists; down 18 since FY2021.
75	Jataware Corp Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,000,000	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
76	Strategy Robot Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,000,000	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
77	Florida Institute for Human & Machine Cognition Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$999,007	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
78	Cyberwinter Studios LLC Top agencies USAF (Department of the Air Force)	$997,942	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Smart Information Flow Technologies LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$997,021	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #70 in FY2024 and #78 in FY2025; new.
80	Seemann Composites, LLC Through Materials Sciences LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$992,101	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 240 since FY2021.
81	Cynnovative, LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$991,401	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
82	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$978,361	0.2%	Rank history: #94 in FY2021, #3 in FY2023, #3 in FY2024 and #4 in FY2025; up 12 since FY2021.
83	Massachusetts Institute of Technology Top agencies DARPA (Defense Advanced Research Projects Agency)	$969,000	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 31 since FY2021.
84	Securboration, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$965,160	0.2%	Rank history: not on the FY2021 list, #84 in FY2023 and not on the FY2024–FY2025 lists; up 240 since FY2021.
85	Spectral Energies LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$951,278	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 84 since FY2021.
86	Toyon Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$919,967	0.2%	Rank history: not on the FY2021 list, #56 in FY2023, #55 in FY2024 and #27 in FY2025; up 16 since FY2021.
87	Ohio Aerospace Institute Top agencies USAF (Department of the Air Force)	$900,334	0.2%	Rank history: #25 in FY2021, #68 in FY2023 and not on the FY2024–FY2025 lists; down 62 since FY2021.
88	Volta Power Systems, L.L.C. Top agencies OSD (Office of the Secretary of Defense)	$893,378	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 54 since FY2021.
89	Kent Optronics Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$889,831	0.2%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; down 12 since FY2021.
90	Arete Associates Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$876,408	0.2%	Rank history: not on the FY2021 list, #67 in FY2023, #56 in FY2024 and #56 in FY2025; up 35 since FY2021.
91	Sage Technologies Limited Top agencies Army (Department of the Army)	$857,904	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Spectral Sensor Solutions, LLC Top agencies Army (Department of the Army)	$853,547	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
93	The Veritas Capital Fund VII L P Through Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$827,358	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
94	Turnaround Factor, Inc. Top agencies DLA (Defense Logistics Agency)	$799,984	0.2%	Rank history: #69 in FY2021 and not on the FY2023–FY2025 lists; down 25 since FY2021.
95	Fox and Geese LLC Top agencies DHRA (Defense Human Resources Activity)	$799,588	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 84 since FY2021.
96	Accelint AI, LLC Top agencies Navy (Department of the Navy)	$759,788	0.1%	Rank history: not on the FY2021 list, #21 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2021.
97	Metron Incorporated Top agencies Navy (Department of the Navy)	$759,523	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 36 since FY2021.
98	Vigilant Cyber Systems, Inc. Top agencies USAF (Department of the Air Force)	$750,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Spark Thermionics, Inc. Top agencies USAF (Department of the Air Force)	$749,999	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
100	Kyma Technologies Inc. Top agencies USAF (Department of the Air Force)	$749,997	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; 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 $527 million 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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