Top 100 Contractors in PSC J020: Maintenance, Repair and Rebuilding of Equipment: Ship and Marine Equipment, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Global Maritek Systems Inc. Top agencies DHS (Department of Homeland Security)	$33,415,863	11.7%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	Oceaneering International Inc. 2 awardees Top agencies Navy (Department of the Navy)	$12,549,876	4.4%	Rank history: #3 in FY2022, #2 in FY2023, #4 in FY2024 and #4 in FY2025; unchanged since FY2020.
3	Triverus LLC Top agencies Navy (Department of the Navy)	$9,180,727	3.2%	Rank history: #18 in FY2022, not on the FY2023–FY2024 lists and #14 in FY2025; up 2 since FY2020.
4	Ultra Electronics Forensic Technology Inc 2 awardees, including Ultra Electronics Ocean Systems Inc. and Ems Development Corporation Top agencies Navy (Department of the Navy)	$7,979,255	2.8%	Rank history: #15 in FY2022, #20 in FY2023, #40 in FY2024 and not on the FY2025 list; up 8 since FY2020.
5	Epsilon Systems Solutions, Inc. Top agencies Navy (Department of the Navy)	$7,910,574	2.8%	Rank history: #10 in FY2022 and not on the FY2023–FY2025 lists; up 57 since FY2020.
6	Saab AB Through Saab, Inc. Top agencies Navy (Department of the Navy)	$7,700,000	2.7%	Rank history: #4 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
7	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Navy (Department of the Navy)	$7,644,040	2.7%	Rank history: not on the FY2022–FY2024 lists and #2 in FY2025; new, not ranked in FY2020.
8	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOT (Department of Transportation)	$7,262,543	2.5%	Rank history: #5 in FY2022, #6 in FY2023, #5 in FY2024 and #8 in FY2025; up 66 since FY2020.
9	L3Harris Technologies, Inc. 7 awardees, including L3 Technologies, Inc. and L3Harris Maritime Power & Energy Solutions, Inc. Top agencies Navy (Department of the Navy)	$7,120,217	2.5%	Rank history: #8 in FY2022, #3 in FY2023, #6 in FY2024 and #9 in FY2025; down 5 since FY2020.
10	HII Unmanned Systems, Inc. Top agencies Navy (Department of the Navy)	$6,103,910	2.1%	Rank history: #16 in FY2022, #4 in FY2023, #12 in FY2024 and not on the FY2025 list; up 399 since FY2020.
11	Life Cycle Engineering Inc. Top agencies Navy (Department of the Navy)	$5,895,260	2.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
12	Rolls-Royce Military Aero Engines Ltd 2 awardees, including Rolls-Royce Solutions America Inc. and Rolls-Royce Marine North America Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$5,335,875	1.9%	Rank history: #11 in FY2022, #28 in FY2023, #42 in FY2024 and not on the FY2025 list; up 18 since FY2020.
13	G I Industrial-Marine, LLC Top agencies DHS (Department of Homeland Security)	$5,317,363	1.9%	Rank history: #23 in FY2022, not on the FY2023 list, #67 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
14	Fincantieri Marine Systems North America Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$4,434,622	1.6%	Rank history: #24 in FY2022, #27 in FY2023, #57 in FY2024 and not on the FY2025 list; down 3 since FY2020.
15	Wartsila Defense Inc. Through Defense Maritime Solutions, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$4,271,535	1.5%	Rank history: #21 in FY2022, #66 in FY2023, #89 in FY2024 and not on the FY2025 list; up 39 since FY2020.
16	RTX Corporation 3 awardees, including Raytheon Company and Goodrich Corporation Top agencies Navy (Department of the Navy)	$3,895,693	1.4%	Rank history: #26 in FY2022, not on the FY2023–FY2024 lists and #37 in FY2025; new, not ranked in FY2020.
17	3MC Mobile & Mechanical Repair LLC Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security)	$3,831,057	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
18	Austal Limited Through Austal Usa, LLC Top agencies Navy (Department of the Navy)	$3,693,148	1.3%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
19	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$3,436,177	1.2%	Rank history: #29 in FY2022, #17 in FY2023, #14 in FY2024 and #17 in FY2025; up 3 since FY2020.
20	Advanced Internet Marketing, Inc. Top agencies Commerce (Department of Commerce) Army (Department of the Army) DHS (Department of Homeland Security)	$3,390,571	1.2%	Rank history: #44 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
21	Heico Aerospace Corporat Through Rocky Mountain Hydrostatics, LLC Top agencies Navy (Department of the Navy)	$3,374,448	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Seafix Incorporated Top agencies Navy (Department of the Navy)	$3,341,110	1.2%	Rank history: #20 in FY2022, #16 in FY2023, #15 in FY2024 and #19 in FY2025; down 6 since FY2020.
23	Mclaughlin Research Corporation Top agencies Navy (Department of the Navy)	$2,847,443	1.0%	Rank history: #19 in FY2022, #23 in FY2023, #19 in FY2024 and not on the FY2025 list; up 3 since FY2020.
24	Acme Industrial Inc. Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$2,756,337	1.0%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
25	Volkswagen AG 3 awardees, including Everllence Middle East and Africa L.l.c, Renk Corp and Everllence Japan Ltd. Top agencies Navy (Department of the Navy)	$2,745,281	1.0%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
26	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies Navy (Department of the Navy)	$2,736,545	1.0%	Rank history: #32 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
27	Amentum Services, Inc. 2 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,439,695	0.9%	Rank history: #37 in FY2022, #19 in FY2023, #31 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
28	Lake Shore Systems, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$2,420,124	0.8%	Rank history: not on the FY2022–FY2025 lists; up 47 since FY2020.
29	Curtiss-Wright Corporation 3 awardees, including Curtiss-Wright Electro-Mechanical Corp Top agencies Navy (Department of the Navy)	$2,335,856	0.8%	Rank history: #14 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
30	Confluence Corp Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$2,331,721	0.8%	Rank history: #48 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; up 249 since FY2020.
31	Integrated Marine Services, Inc. Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$2,327,904	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	Bowhead Marine Support Services, LLC Top agencies Navy (Department of the Navy)	$2,212,701	0.8%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
33	Big River Shipbuilders Inc. Top agencies Army (Department of the Army)	$2,107,936	0.7%	Rank history: #98 in FY2022, not on the FY2023 list, #43 in FY2024 and #60 in FY2025; new, not ranked in FY2020.
34	Fairbanks Morse LLC 6 awardees, including Ward Leonard CT LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$2,064,131	0.7%	Rank history: #40 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
35	Florida Offshore, Inc. Top agencies USAF (Department of the Air Force)	$1,922,880	0.7%	Rank history: #30 in FY2022, #29 in FY2023, #30 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
36	Federal Marine & Defense Services LLC Top agencies DHS (Department of Homeland Security)	$1,900,744	0.7%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
37	Thrustmaster of Texas, Inc. Top agencies DHS (Department of Homeland Security)	$1,863,324	0.7%	Rank history: #46 in FY2022, not on the FY2023–FY2024 lists and #93 in FY2025; new, not ranked in FY2020.
38	DMR Consulting, Inc. Top agencies Navy (Department of the Navy)	$1,829,554	0.6%	Rank history: #53 in FY2022, #50 in FY2023, #47 in FY2024 and not on the FY2025 list; down 32 since FY2020.
39	QED Systems, Inc. Top agencies Navy (Department of the Navy)	$1,822,984	0.6%	Rank history: #54 in FY2022, #38 in FY2023, #28 in FY2024 and #46 in FY2025; up 6 since FY2020.
40	Sabine Marine Group Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$1,722,332	0.6%	Rank history: #82 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; down 26 since FY2020.
41	Johnson & Towers Inc. Through Western Branch Diesel, LLC Top agencies DHS (Department of Homeland Security)	$1,635,334	0.6%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
42	Marine Ventures International, Inc. Top agencies Navy (Department of the Navy)	$1,625,994	0.6%	Rank history: #13 in FY2022, not on the FY2023 list, #76 in FY2024 and #12 in FY2025; new, not ranked in FY2020.
43	The Great Lakes Towing Company LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$1,538,330	0.5%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; down 20 since FY2020.
44	Jag Industrial Services, Inc. Top agencies DHS (Department of Homeland Security)	$1,493,601	0.5%	Rank history: #22 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
45	Ares Energy LP Top agencies Army (Department of the Army)	$1,385,825	0.5%	Rank history: not on the FY2022–FY2025 lists; up 70 since FY2020.
46	Metson Marine Inc. Through Metson Marine Services, Inc. Top agencies Navy (Department of the Navy)	$1,199,852	0.4%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
47	General Atomic Technologies Corporation Through General Atomics Top agencies Navy (Department of the Navy)	$1,089,906	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	W. W. Williams Company LLC the 2 awardees, including The W.w. Williams Company, LLC Top agencies DHS (Department of Homeland Security)	$1,053,469	0.4%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
49	Qinetiq Group PLC Through Foster-Miller, Inc. Top agencies Navy (Department of the Navy)	$1,049,831	0.4%	Rank history: #65 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
50	Teledyne Flir Defense, Inc. Top agencies Navy (Department of the Navy)	$1,000,510	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Lidgerwood Manufacturing Company Through Superior-Lidgerwood-Mundy Corp Top agencies DHS (Department of Homeland Security)	$967,784	0.3%	Rank history: not on the FY2022–FY2025 lists; up 181 since FY2020.
52	Mclean Contracting Company Top agencies DHS (Department of Homeland Security)	$927,024	0.3%	Rank history: #68 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
53	Cayuse Holdings LLC Through Cayuse Technologies, LLC Top agencies Navy (Department of the Navy)	$908,898	0.3%	Rank history: #62 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
54	Submergence Group LLC Top agencies USSOCOM (United States Special Operations Command)	$782,730	0.3%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
55	Anchor Innovation, Inc. Top agencies Navy (Department of the Navy)	$760,277	0.3%	Rank history: #66 in FY2022, #70 in FY2023, not on the FY2024 list and #67 in FY2025; up 8 since FY2020.
56	Sumitomo Heavy Industries, Ltd. 2 awardees, including Sumitomo Heavy Industries Material Handling Systems Co., Ltd. Top agencies Navy (Department of the Navy)	$731,313	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	BMT Group Ltd Through BMT Designers & Planners, Inc. Top agencies DHS (Department of Homeland Security)	$693,590	0.2%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
58	NRE Power Systems, Inc. Top agencies Army (Department of the Army)	$691,353	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Hermann & LEE Inc. Through Sullivan and Merritt Constructors, Inc. Top agencies DOT (Department of Transportation)	$643,950	0.2%	Rank history: #84 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2020.
60	South Bay Sand Blasting and Tank Cleaning, Inc. Top agencies Navy (Department of the Navy)	$577,075	0.2%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
61	Moog Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$565,584	0.2%	Rank history: not on the FY2022–FY2025 lists; up 159 since FY2020.
62	Windy Bay Services LLC Top agencies Navy (Department of the Navy)	$556,844	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	Hensoldt Inc. Top agencies DHS (Department of Homeland Security)	$553,309	0.2%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
64	Electronic Marine Systems, Inc. Top agencies Navy (Department of the Navy)	$539,239	0.2%	Rank history: not on the FY2022 list, #48 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
65	Ship Colonna'S Yard Incorporated 2 awardees, including Colonna's Ship Yard, Incorporated and Colonna's Shipyard Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$512,231	0.2%	Rank history: #52 in FY2022, #7 in FY2023, not on the FY2024 list and #43 in FY2025; down 41 since FY2020.
66	Ian-Conrad Bergan, LLC Top agencies Navy (Department of the Navy)	$510,366	0.2%	Rank history: not on the FY2022–FY2025 lists; up 363 since FY2020.
67	General Dynamics Satcom Technologies Inc. Through Microwave Power Products, Inc. Top agencies Navy (Department of the Navy)	$505,078	0.2%	Rank history: not on the FY2022 list, #75 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
68	Appleton Marine Inc. Top agencies DHS (Department of Homeland Security)	$500,062	0.2%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
69	Tampa Ship LLC Top agencies Army (Department of the Army)	$492,408	0.2%	Rank history: not on the FY2022–FY2024 lists and #28 in FY2025; up 53 since FY2020.
70	Fassmer Service America LLC Top agencies Navy (Department of the Navy)	$479,180	0.2%	Rank history: not on the FY2022–FY2025 lists; up 132 since FY2020.
71	Pennant Marine Services Inc. Top agencies DHS (Department of Homeland Security)	$453,171	0.2%	Rank history: not on the FY2022–FY2025 lists; up 158 since FY2020.
72	Huntington Ingalls Industries, Inc. 2 awardees, including Huntington Ingalls Inc. Top agencies Navy (Department of the Navy)	$452,697	0.2%	Rank history: not on the FY2022–FY2024 lists and #39 in FY2025; down 64 since FY2020.
73	Bollinger Mississippi Repair, LLC Top agencies Commerce (Department of Commerce)	$450,000	0.2%	Rank history: not on the FY2022–FY2023 lists, #45 in FY2024 and #42 in FY2025; new, not ranked in FY2020.
74	Flir Systems Inc. Through Teledyne Flir Defense, Inc. Top agencies Navy (Department of the Navy)	$448,655	0.2%	Rank history: #34 in FY2022, #36 in FY2023, #71 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
75	Dawson Solutions, Inc. Top agencies Navy (Department of the Navy)	$442,487	0.2%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
76	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$435,032	0.2%	Rank history: #31 in FY2022, #12 in FY2023, #10 in FY2024 and #25 in FY2025; new, not ranked in FY2020.
77	The W.w. Williams Company, LLC Top agencies DHS (Department of Homeland Security)	$434,366	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Stilten, Ltd. Co. Top agencies DHS (Department of Homeland Security)	$432,713	0.2%	Rank history: not on the FY2022 list, #78 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
79	Imeco Inc. 3 awardees, including Trident Maritime Systems, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$428,152	0.1%	Rank history: not on the FY2022 list, #87 in FY2023 and not on the FY2024–FY2025 lists; up 160 since FY2020.
80	Padgett-Swann Machinery Company Top agencies DHS (Department of Homeland Security)	$424,620	0.1%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 59 since FY2020.
81	Johnson Controls Building Automation Systems, LLC Top agencies Navy (Department of the Navy)	$423,269	0.1%	Rank history: not on the FY2022–FY2025 lists; up 38 since FY2020.
82	Ease Painting and Construction, Inc. Top agencies DHS (Department of Homeland Security)	$420,601	0.1%	Rank history: #59 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 102 since FY2020.
83	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. and Siemens Government Technologies Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$415,060	0.1%	Rank history: not on the FY2022–FY2025 lists; up 120 since FY2020.
84	Louis Allis LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$407,042	0.1%	Rank history: not on the FY2022–FY2023 lists, #90 in FY2024 and #49 in FY2025; up 20 since FY2020.
85	Southwest Research Institute Top agencies DHS (Department of Homeland Security)	$406,913	0.1%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
86	Schwartz Boiler Shop Inc. Top agencies DHS (Department of Homeland Security)	$383,532	0.1%	Rank history: #63 in FY2022, not on the FY2023 list, #99 in FY2024 and not on the FY2025 list; up 3 since FY2020.
87	Point Eight Power, LLC Top agencies Navy (Department of the Navy)	$380,323	0.1%	Rank history: not on the FY2022–FY2025 lists; up 125 since FY2020.
88	Aurora Energy Services Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$374,443	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Sauer Compressors USA Inc. Top agencies Navy (Department of the Navy)	$373,159	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	The Sherwin-Williams Company Top agencies Navy (Department of the Navy)	$367,195	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	R3 Strategic Support Group Inc. Top agencies Navy (Department of the Navy)	$360,381	0.1%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
92	Karl Senner, L.L.C. Top agencies Army (Department of the Army)	$348,612	0.1%	Rank history: not on the FY2022–FY2025 lists; up 309 since FY2020.
93	Snow & Company, Inc. Top agencies Commerce (Department of Commerce)	$342,812	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Dependable Marine Inc. Top agencies USSOCOM (United States Special Operations Command)	$338,756	0.1%	Rank history: #95 in FY2022, not on the FY2023–FY2024 lists and #91 in FY2025; down 4 since FY2020.
95	Progressive Diesel Red, Inc. Top agencies DOT (Department of Transportation)	$332,422	0.1%	Rank history: not on the FY2022–FY2025 lists; up 114 since FY2020.
96	The Mchenry Management Group, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$317,284	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Guardian Systems LLC Top agencies DHS (Department of Homeland Security)	$316,473	0.1%	Rank history: not on the FY2022–FY2023 lists, #82 in FY2024 and #70 in FY2025; new, not ranked in FY2020.
98	Mid-Atlantic Marine Cleaning LLC Top agencies Navy (Department of the Navy)	$304,355	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Cincinnati Gearing Systems Incorporated Top agencies Navy (Department of the Navy)	$299,225	0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
100	De La Fuente Construction, Inc. Top agencies Navy (Department of the Navy)	$294,477	0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in 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 $286 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 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