Top 91 Contractors in PSC AD93: R&D – Defense Other: Other (Advanced Development), FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 16 awardees Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DARPA (Defense Advanced Research Projects Agency)	$173,910,695	20.5%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	RTX Corporation 18 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Blue Canyon Technologies LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$94,698,206	11.2%	Rank history: #2 in FY2021, #4 in FY2022, #5 in FY2024 and #4 in FY2025; up 2 since FY2022.
3	Radiance Technologies Inc. Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$82,562,715	9.7%	Rank history: #4 in FY2021, #2 in FY2022, #3 in FY2024 and #5 in FY2025; down 1 since FY2022.
4	General Dynamics Corporation 3 awardees, including Applied Physical Sciences Corp and Electric Boat Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$57,301,753	6.7%	Rank history: #6 in FY2021, #5 in FY2022, #6 in FY2024 and #6 in FY2025; up 1 since FY2022.
5	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$52,098,008	6.1%	Rank history: #7 in FY2021, #6 in FY2022, #4 in FY2024 and #2 in FY2025; up 1 since FY2022.
6	National Security Technology Accelerator Inc. Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$50,562,422	6.0%	Rank history: #3 in FY2021, #3 in FY2022, #7 in FY2024 and #9 in FY2025; down 3 since FY2022.
7	George Mason University Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$29,355,371	3.5%	Rank history: #12 in FY2021, #12 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
8	Southwest Research Institute Top agencies DTRA (Defense Threat Reduction Agency)	$22,746,905	2.7%	Rank history: #19 in FY2021, #16 in FY2022, #12 in FY2024 and #22 in FY2025; up 8 since FY2022.
9	New Mexico Institute of Mining and Technology Top agencies USAF (Department of the Air Force)	$20,450,000	2.4%	Rank history: not on the FY2021 list, #34 in FY2022 and not on the FY2024–FY2025 lists; up 25 since FY2022.
10	Assured Information Security, Inc. Top agencies USAF (Department of the Air Force)	$14,214,077	1.7%	Rank history: #8 in FY2021, #22 in FY2022, #11 in FY2024 and #12 in FY2025; up 12 since FY2022.
11	Black River Systems Company, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$13,643,207	1.6%	Rank history: #10 in FY2021, #8 in FY2022, #35 in FY2024 and #17 in FY2025; down 3 since FY2022.
12	General Electric Company 2 awardees, including GE Aviation Systems LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$12,949,758	1.5%	Rank history: #39 in FY2021, #26 in FY2022, not on the FY2024 list and #27 in FY2025; up 14 since FY2022.
13	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$10,937,752	1.3%	Rank history: #18 in FY2021, #17 in FY2022, #9 in FY2024 and #13 in FY2025; up 4 since FY2022.
14	Leidos Holdings, Inc. 3 awardees, including Dynetics, Inc. and Leidos, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$10,654,446	1.3%	Rank history: #11 in FY2021, #27 in FY2022, #20 in FY2024 and #11 in FY2025; up 13 since FY2022.
15	Global Infotek Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$10,155,700	1.2%	Rank history: #14 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
16	CNF Technologies Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$9,695,607	1.1%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2024 and not on the FY2025 list; new.
17	Science Applications International Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$9,078,000	1.1%	Rank history: #31 in FY2021, #15 in FY2022, #10 in FY2024 and #7 in FY2025; down 2 since FY2022.
18	University of Dayton Top agencies USAF (Department of the Air Force)	$8,948,771	1.1%	Rank history: #22 in FY2021, #24 in FY2022, #15 in FY2024 and #14 in FY2025; up 6 since FY2022.
19	BAE Systems PLC 3 awardees, including BAE Systems Information & Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$8,920,967	1.1%	Rank history: #29 in FY2021, #14 in FY2022, #30 in FY2024 and #10 in FY2025; down 5 since FY2022.
20	Parsons Corporation 5 awardees, including Blackhorse, A Parsons LLC and Parsons Government Services Inc. Top agencies WHS (DOD Washington Headquarters Service) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$7,385,905	0.9%	Rank history: #75 in FY2021, #30 in FY2022, #23 in FY2024 and #16 in FY2025; up 10 since FY2022.
21	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$7,228,013	0.9%	Rank history: #15 in FY2021, #11 in FY2022, #41 in FY2024 and not on the FY2025 list; down 10 since FY2022.
22	Thomson Reuters Special Services LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$6,455,643	0.8%	Rank history: #99 in FY2021, #21 in FY2022, #19 in FY2024 and not on the FY2025 list; down 1 since FY2022.
23	Qinetiq Group PLC 2 awardees, including Qinetiq Inc. Top agencies Army (Department of the Army)	$6,186,799	0.7%	Rank history: #46 in FY2021, #13 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
24	Par Technology Corporation Through Par Government Systems Corporation Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$5,583,525	0.7%	Rank history: #44 in FY2021, #37 in FY2022, #21 in FY2024 and #23 in FY2025; up 13 since FY2022.
25	CACI International Inc. 3 awardees, including Caci Photonics, LLC, Caci, Inc. - Federal and Caci Technologies, LLC Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) OSD (Office of the Secretary of Defense)	$5,504,838	0.6%	Rank history: #73 in FY2021, #20 in FY2022, #25 in FY2024 and not on the FY2025 list; down 5 since FY2022.
26	University of Maine System Top agencies Army (Department of the Army)	$5,400,000	0.6%	Rank history: #85 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
27	The Veritas Capital Fund VII L P 2 awardees, including Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,222,532	0.6%	Rank history: not on the FY2021 list, #32 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
28	The Charles Stark Draper Laboratory, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$5,191,056	0.6%	Rank history: #26 in FY2021, #28 in FY2022, #31 in FY2024 and not on the FY2025 list; unchanged since FY2022.
29	S2 Corp Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,000,000	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	Kudu Dynamics LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$4,281,297	0.5%	Rank history: #35 in FY2021, #36 in FY2022, #8 in FY2024 and not on the FY2025 list; up 6 since FY2022.
31	L3Harris Technologies, Inc. 12 awardees, including L3Harris Technologies Integrated Systems L.P. and L3 Technologies, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,231,098	0.5%	Rank history: #5 in FY2021, #10 in FY2022, #34 in FY2024 and #15 in FY2025; down 21 since FY2022.
32	Premier Technology, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$4,137,976	0.5%	Rank history: #40 in FY2021, #45 in FY2022, #24 in FY2024 and not on the FY2025 list; up 13 since FY2022.
33	Woods Hole Oceanographic Institution Top agencies Navy (Department of the Navy)	$4,130,197	0.5%	Rank history: #55 in FY2021, #53 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
34	Cubrc, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,007,019	0.5%	Rank history: #36 in FY2021, #35 in FY2022, #63 in FY2024 and not on the FY2025 list; up 1 since FY2022.
35	Metron Incorporated Top agencies Navy (Department of the Navy)	$3,785,800	0.4%	Rank history: #47 in FY2021, #51 in FY2022, #38 in FY2024 and not on the FY2025 list; up 16 since FY2022.
36	Safe Inc. Top agencies Navy (Department of the Navy)	$3,300,000	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #31 in FY2025; new.
37	Herrick Technology Laboratories Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$3,000,000	0.4%	Rank history: #48 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
38	Intel Federal LLC Top agencies USAF (Department of the Air Force)	$2,681,010	0.3%	Rank history: not on the FY2021 list, #84 in FY2022, #26 in FY2024 and #25 in FY2025; up 46 since FY2022.
39	Northrop Grumman Corporation 9 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$2,648,080	0.3%	Rank history: #13 in FY2021, #19 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
40	Cromulence LLC Top agencies USAF (Department of the Air Force)	$2,572,576	0.3%	Rank history: #97 in FY2021, #55 in FY2022, #48 in FY2024 and not on the FY2025 list; up 15 since FY2022.
41	Aerojet Rocketdyne Holdings, Inc. Through Aerojet Rocketdyne Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,200,403	0.3%	Rank history: #41 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
42	University of Southern California Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,176,550	0.3%	Rank history: #54 in FY2021, #39 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
43	Shield Ai Inc. Through Heron Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,169,372	0.3%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2024 and not on the FY2025 list; new.
44	Pierre John M LLC 2 awardees Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,786,230	0.2%	Rank history: #71 in FY2021, #58 in FY2022, #55 in FY2024 and not on the FY2025 list; up 14 since FY2022.
45	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$1,714,680	0.2%	Rank history: not on the FY2021 list, #49 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
46	Red Wire Technologies LLC Top agencies DTRA (Defense Threat Reduction Agency)	$1,709,287	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	Teksynap Corporation Top agencies DTRA (Defense Threat Reduction Agency)	$1,586,079	0.2%	Rank history: #58 in FY2021, #48 in FY2022, #60 in FY2024 and not on the FY2025 list; up 1 since FY2022.
48	The Pennsylvania State University Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$1,527,105	0.2%	Rank history: #37 in FY2021, #42 in FY2022, #58 in FY2024 and not on the FY2025 list; down 6 since FY2022.
49	Nehemiah Security, Inc. Through Siege Technologies, LLC Top agencies USAF (Department of the Air Force)	$1,485,000	0.2%	Rank history: #70 in FY2021, #90 in FY2022 and not on the FY2024–FY2025 lists; up 41 since FY2022.
50	Andro Computational Solutions LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$1,465,496	0.2%	Rank history: not on the FY2021 list, #72 in FY2022, #42 in FY2024 and not on the FY2025 list; up 22 since FY2022.
51	Sierra Nevada Company, LLC 2 awardees Top agencies USAF (Department of the Air Force)	$1,450,115	0.2%	Rank history: #60 in FY2021, #76 in FY2022, #40 in FY2024 and not on the FY2025 list; up 25 since FY2022.
52	Tangram Flex Inc. Top agencies USAF (Department of the Air Force)	$1,175,578	0.1%	Rank history: #76 in FY2021, #60 in FY2022, #37 in FY2024 and #24 in FY2025; up 8 since FY2022.
53	Alion Science and Technology Corporation 3 awardees, including HII Mission Technologies Corp Top agencies DTRA (Defense Threat Reduction Agency)	$1,137,549	0.1%	Rank history: #80 in FY2021, #99 in FY2022 and not on the FY2024–FY2025 lists; up 46 since FY2022.
54	Macaulay-Brown Inc. Through HII Mission Technologies Corp. Top agencies Navy (Department of the Navy)	$1,115,224	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #50 in FY2024 and not on the FY2025 list; up 35 since FY2022.
55	Dager Technology LLC Top agencies DTRA (Defense Threat Reduction Agency)	$1,097,201	0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and not on the FY2025 list; new.
56	Heron Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,050,000	0.1%	Rank history: #66 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
57	Kitware Inc. Top agencies WHS (DOD Washington Headquarters Service)	$990,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and not on the FY2025 list; new.
58	Ultra Electronics Forensic Technology Inc Through Undersea Sensor Systems, Inc. Top agencies Navy (Department of the Navy)	$950,979	0.1%	Rank history: #38 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
59	Arrow TECH Associates, Inc. Top agencies Navy (Department of the Navy)	$950,504	0.1%	Rank history: not on the FY2021 list, #67 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
60	Vector Atomic Inc Top agencies Navy (Department of the Navy)	$900,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2024 and not on the FY2025 list; new.
61	Edge Case Research Inc. Top agencies Navy (Department of the Navy)	$869,739	0.1%	Rank history: #86 in FY2021, #78 in FY2022, #39 in FY2024 and not on the FY2025 list; up 17 since FY2022.
62	Schweitzer Engineering Laboratories Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$745,538	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
63	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense)	$737,401	0.1%	Rank history: #84 in FY2021, #56 in FY2022, #32 in FY2024 and #18 in FY2025; down 7 since FY2022.
64	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$735,579	0.1%	Rank history: #56 in FY2021, #91 in FY2022, #61 in FY2024 and not on the FY2025 list; up 27 since FY2022.
65	Maritime Surveillance Associates Inc Top agencies Navy (Department of the Navy)	$633,979	0.1%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2024 and not on the FY2025 list; new.
66	North Point Defense Inc. Top agencies USAF (Department of the Air Force)	$625,523	0.1%	Rank history: #33 in FY2021, #79 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
67	Jacobs Engineering Group Inc. Through The Keyw Corporation Top agencies USAF (Department of the Air Force)	$538,585	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #65 in FY2024 and not on the FY2025 list; up 30 since FY2022.
68	Deumbra, LLC Top agencies Navy (Department of the Navy)	$532,610	0.1%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2024–FY2025 lists; up 30 since FY2022.
69	The Administrators of Tulane Educational Fund Top agencies DTRA (Defense Threat Reduction Agency)	$529,107	0.1%	Rank history: not on the FY2021 list, #64 in FY2022, #47 in FY2024 and not on the FY2025 list; down 5 since FY2022.
70	Strategic Analysis, Inc. Top agencies Navy (Department of the Navy)	$504,500	0.1%	Rank history: not on the FY2021 list, #62 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
71	RPX Technologies Inc Top agencies USAF (Department of the Air Force)	$500,601	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 49 since FY2022.
72	Qorvo, Inc. 2 awardees, including Qorvo Texas, LLC Top agencies Navy (Department of the Navy)	$493,123	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Steel Founders Society of America Top agencies DLA (Defense Logistics Agency)	$465,288	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #69 in FY2024 and not on the FY2025 list; up 12 since FY2022.
74	P & J Robinson Corp Top agencies Navy (Department of the Navy)	$450,000	0.1%	Rank history: #62 in FY2021, #41 in FY2022, #49 in FY2024 and not on the FY2025 list; down 33 since FY2022.
75	Quanterion Solutions Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$430,527	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and #29 in FY2025; up 53 since FY2022.
76	Toyon Research Corporation Top agencies USAF (Department of the Air Force)	$424,949	0.1%	Rank history: #95 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 34 since FY2022.
77	C5T Corporation Top agencies USAF (Department of the Air Force)	$407,091	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 24 since FY2022.
78	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$399,257	<0.1%	Rank history: #23 in FY2021, #83 in FY2022, not on the FY2024 list and #34 in FY2025; up 5 since FY2022.
79	Virginia Commonwealth University Through Virginia Polytechnic Institute & State University Top agencies USAF (Department of the Air Force)	$381,335	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	HP Enterprise Services LLC 2 awardees, including Peraton Inc. Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$359,967	<0.1%	Rank history: #53 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 51 since FY2022.
81	University of Texas System Through University of Texas At Austin Top agencies Navy (Department of the Navy)	$318,280	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 46 since FY2022.
82	Engineered Signals, Inc. Top agencies USAF (Department of the Air Force)	$233,499	<0.1%	Rank history: not on the FY2021 list, #95 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
83	Nevada State Veterans Home Through Board of Regents of Nevada System of Higher Education Top agencies DTRA (Defense Threat Reduction Agency)	$210,055	<0.1%	Rank history: #96 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 35 since FY2022.
84	Ministry of Defence Top agencies DTRA (Defense Threat Reduction Agency)	$205,120	<0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and not on the FY2025 list; up 39 since FY2022.
85	SRC Inc. Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and not on the FY2025 list; up 21 since FY2022.
86	Nalej Corp Top agencies USAF (Department of the Air Force)	$134,974	<0.1%	Rank history: #69 in FY2021, not on the FY2022 list, #18 in FY2024 and #21 in FY2025; up 19 since FY2022.
87	Telesat Canada Through Telesat U.s. Services LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$131,310	<0.1%	Rank history: #42 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
88	Tech7 Consulting, LLC Top agencies USAF (Department of the Air Force)	$118,749	<0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #51 in FY2024 and not on the FY2025 list; down 6 since FY2022.
89	Charles River Analytics, Inc. Top agencies Navy (Department of the Navy)	$92,664	<0.1%	Rank history: #94 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
90	Mrsl Real-Time Systems Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$50,561	<0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
91	Karagozian & Case, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$27,740	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 33 since FY2022.

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 $849 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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