Top 100 Contractors in PSC 6650: Optical Instruments, Test Equipment, Components and Accessories, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	L3Harris Technologies, Inc. 4 awardees, including L3 Technologies, Inc. and Harris Corporation Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency) Army (Department of the Army)	$71,215,761	42.4%	Rank history: #1 in FY2021, #5 in FY2023, #2 in FY2024 and #10 in FY2025; unchanged since FY2021.
2	Waygate Technologies USA LP Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$10,481,209	6.2%	Rank history: #7 in FY2021, #17 in FY2023, #7 in FY2024 and not on the FY2025 list; up 5 since FY2021.
3	Ametek Inc. 6 awardees, including Spectro Scientific, Inc., Zygo Corporation and Advanced Measurement Technology Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$7,787,750	4.6%	Rank history: #2 in FY2021, #18 in FY2023, #19 in FY2024 and #5 in FY2025; down 1 since FY2021.
4	Atap Inc. Top agencies USAF (Department of the Air Force)	$4,354,500	2.6%	Rank history: not on the FY2021 list, #15 in FY2023, #10 in FY2024 and #9 in FY2025; new.
5	Carl Zeiss X-RAY Microscopy Inc. 3 awardees, including Carl Zeiss Microscopy, LLC and Carl Zeiss De México, S.A. De C.V. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$3,733,953	2.2%	Rank history: not on the FY2021 list, #59 in FY2023, #53 in FY2024 and #98 in FY2025; up 107 since FY2021.
6	Optex Systems Inc. Top agencies DLA (Defense Logistics Agency)	$3,339,561	2.0%	Rank history: #8 in FY2021, #16 in FY2023, #6 in FY2024 and #11 in FY2025; up 2 since FY2021.
7	Nikon Corporation 3 awardees, including Nikon Instruments Inc. and Nikon Metrology, LLC Top agencies VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences) Navy (Department of the Navy)	$2,923,624	1.7%	Rank history: #12 in FY2021, #27 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2021.
8	Nvts Night Vision Technology Solutions, Inc. Top agencies Army (Department of the Army)	$2,795,216	1.7%	Rank history: not on the FY2021 list, not on the FY2023 list, #13 in FY2024 and not on the FY2025 list; new.
9	Federal Resources Supply Company Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,320,389	1.4%	Rank history: #10 in FY2021, not on the FY2023 list, #60 in FY2024 and not on the FY2025 list; up 1 since FY2021.
10	Leidos Holdings, Inc. Through Leidos Inc. Top agencies DHS (Department of Homeland Security)	$2,200,000	1.3%	Rank history: #27 in FY2021 and not on the FY2023–FY2025 lists; up 17 since FY2021.
11	Heico Aerospace Corporat 3 awardees, including Santa Barbara Infrared, Inc., Intelligent Devices LLC and Research Electronics International, L.L.C. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,104,793	1.3%	Rank history: not on the FY2021 list, #39 in FY2023 and not on the FY2024–FY2025 lists; up 171 since FY2021.
12	Zistos Corporation Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,098,890	1.2%	Rank history: #20 in FY2021, #33 in FY2023, #21 in FY2024 and not on the FY2025 list; up 8 since FY2021.
13	Gastops Ltd. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,840,614	1.1%	Rank history: #6 in FY2021, #24 in FY2023, #14 in FY2024 and #8 in FY2025; down 7 since FY2021.
14	Olympus America Inc 4 awardees Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$1,827,828	1.1%	Rank history: #16 in FY2021, not on the FY2023 list, #3 in FY2024 and #3 in FY2025; up 2 since FY2021.
15	Proaim Americas, Llc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,761,930	1.0%	Rank history: #51 in FY2021 and not on the FY2023–FY2025 lists; up 36 since FY2021.
16	Danaher Corporation 4 awardees, including Beckman Coulter, Inc., Leica Microsystems Inc. and Sea-Bird Electronics, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$1,743,130	1.0%	Rank history: #22 in FY2021, #21 in FY2023, #16 in FY2024 and #37 in FY2025; up 6 since FY2021.
17	RTX Corporation 6 awardees, including Hamilton Sundstrand Corporation, Rockwell Collins, Inc. and Raytheon Company Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,643,706	1.0%	Rank history: #5 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2021.
18	Jeol Ltd. Through Jeol Usa, Inc. Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior) USAF (Department of the Air Force)	$1,452,681	0.9%	Rank history: #4 in FY2021, #66 in FY2023, #30 in FY2024 and not on the FY2025 list; down 14 since FY2021.
19	Teledyne Technologies Incorporated 7 awardees, including Teledyne Flir Defense, Inc., Teledyne Flir Commercial Systems Inc. and Teledyne Flir Detection, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$1,442,838	0.9%	Rank history: not on the FY2021 list, #22 in FY2023 and not on the FY2024–FY2025 lists; new.
20	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy)	$1,385,825	0.8%	Rank history: not on the FY2021 list, not on the FY2023 list, #100 in FY2024 and #89 in FY2025; new.
21	Alliant Enterprises, LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$1,282,292	0.8%	Rank history: #35 in FY2021, #88 in FY2023, #26 in FY2024 and not on the FY2025 list; up 14 since FY2021.
22	Carson Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$1,220,155	0.7%	Rank history: #39 in FY2021, #52 in FY2023, #22 in FY2024 and #28 in FY2025; up 17 since FY2021.
23	State of Arizona Through University of Arizona Top agencies Smithsonian (Smithsonian Institution)	$1,198,701	0.7%	Rank history: #21 in FY2021, #28 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
24	Government Scientific Source Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense)	$1,174,870	0.7%	Rank history: #23 in FY2021, #65 in FY2023, #20 in FY2024 and not on the FY2025 list; down 1 since FY2021.
25	Compagnie Merieux Alliance 2 awardees, including Biofire Diagnostics LLC Top agencies VA (Department of Veterans Affairs)	$909,194	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
26	Roche Holding AG Through Roche Diagnostics Corporation Top agencies DHA (Defense Health Agency)	$712,750	0.4%	Rank history: #33 in FY2021, #38 in FY2023, #29 in FY2024 and not on the FY2025 list; up 7 since FY2021.
27	OSI Systems Inc. 2 awardees, including American Science & Engineering Inc. and Rapiscan Systems Inc. Top agencies DHS (Department of Homeland Security)	$652,592	0.4%	Rank history: #15 in FY2021 and not on the FY2023–FY2025 lists; down 12 since FY2021.
28	PGS Group AB Through Aimpoint Inc. Top agencies DLA (Defense Logistics Agency)	$621,344	0.4%	Rank history: #43 in FY2021 and not on the FY2023–FY2025 lists; up 15 since FY2021.
29	Steiner Eoptics, Inc. Top agencies Army (Department of the Army)	$604,104	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
30	4 D Technology Corporation Top agencies USAF (Department of the Air Force) Smithsonian (Smithsonian Institution)	$593,315	0.4%	Rank history: #81 in FY2021 and not on the FY2023–FY2025 lists; up 51 since FY2021.
31	Keyence Corp. Through Keyence Corporation of America Top agencies DOI (Department of the Interior) Navy (Department of the Navy) USAF (Department of the Air Force)	$593,135	0.4%	Rank history: #34 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
32	Astronomical Consultants & Equipment, Inc. Top agencies Navy (Department of the Navy)	$572,500	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 253 since FY2021.
33	Leonardo S.p.A. 2 awardees, including DRS Network & Imaging Systems LLC and Daylight Solutions Inc. Top agencies USSOCOM (United States Special Operations Command) Commerce (Department of Commerce) Navy (Department of the Navy)	$555,849	0.3%	Rank history: #52 in FY2021, #56 in FY2023, #46 in FY2024 and #50 in FY2025; up 19 since FY2021.
34	Spectral Energies LLC Top agencies USAF (Department of the Air Force)	$555,000	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
35	Cardinal Health, Inc. Through Cardinal Health 200, LLC Top agencies VA (Department of Veterans Affairs)	$532,661	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #38 in FY2024 and not on the FY2025 list; up 115 since FY2021.
36	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$529,799	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 358 since FY2021.
37	Leica Microsystems Inc. Top agencies VA (Department of Veterans Affairs)	$528,063	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
38	Thermo Electron Corporation 8 awardees, including Thermo Electron North America LLC, Life Technologies Corporation and Microgenics Corporation Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) Army (Department of the Army)	$524,466	0.3%	Rank history: #11 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; down 27 since FY2021.
39	Wisecom Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$517,722	0.3%	Rank history: not on the FY2021 list, #54 in FY2023 and not on the FY2024–FY2025 lists; up 231 since FY2021.
40	BNC Corp. Top agencies DTRA (Defense Threat Reduction Agency)	$508,760	0.3%	Rank history: not on the FY2021 list, #20 in FY2023, #35 in FY2024 and #64 in FY2025; new.
41	Coherent Inc. 2 awardees, including Coherent NA, Inc. Top agencies Army (Department of the Army)	$466,572	0.3%	Rank history: not on the FY2021 list, #73 in FY2023, #59 in FY2024 and not on the FY2025 list; new.
42	Global Technology Integrators LLC Top agencies USAF (Department of the Air Force)	$462,411	0.3%	Rank history: #28 in FY2021 and not on the FY2023–FY2025 lists; down 14 since FY2021.
43	Epsilon Systems Solutions, Inc. Top agencies Navy (Department of the Navy)	$393,230	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 140 since FY2021.
44	Bruker Corporation Through Bruker Scientific LLC Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce)	$390,910	0.2%	Rank history: #30 in FY2021 and not on the FY2023–FY2025 lists; down 14 since FY2021.
45	Seiler Instrument and Manufacturing Company, Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$349,306	0.2%	Rank history: not on the FY2021 list, #100 in FY2023, #23 in FY2024 and #19 in FY2025; new.
46	L-1 Standards and Technology, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$342,900	0.2%	Rank history: #50 in FY2021, #61 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2021.
47	Technical Communities, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$328,727	0.2%	Rank history: #53 in FY2021, not on the FY2023 list, #11 in FY2024 and #58 in FY2025; up 6 since FY2021.
48	Bresser GMBH Top agencies DODEA (Department of Defense Education Activity)	$284,492	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
49	Monarch Products Corp. Top agencies DLA (Defense Logistics Agency)	$283,410	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #56 in FY2024 and not on the FY2025 list; up 61 since FY2021.
50	Stable Laser Systems Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$276,391	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
51	Smiths Group PLC Through Smiths Detection Inc. Top agencies DHS (Department of Homeland Security)	$275,955	0.2%	Rank history: #78 in FY2021 and not on the FY2023–FY2025 lists; up 27 since FY2021.
52	Materials Development Inc. Top agencies NASA (National Aeronautics and Space Administration)	$269,200	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
53	Riegl Usa, Inc. Top agencies Army (Department of the Army)	$269,040	0.2%	Rank history: #66 in FY2021 and not on the FY2023–FY2025 lists; up 13 since FY2021.
54	Kitco Fiber Optics Inc Top agencies Army (Department of the Army)	$263,674	0.2%	Rank history: not on the FY2021 list, #12 in FY2023, #4 in FY2024 and not on the FY2025 list; new.
55	Sellers Optical, Inc. Top agencies Navy (Department of the Navy)	$260,715	0.2%	Rank history: #77 in FY2021, #64 in FY2023, not on the FY2024 list and #68 in FY2025; up 22 since FY2021.
56	Inspection Engineering LLC Top agencies NASA (National Aeronautics and Space Administration)	$259,884	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
57	Ochoa Enterprises Inc. Top agencies HHS (Department of Health and Human Services)	$255,000	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #49 in FY2024 and #87 in FY2025; new.
58	Montana Instruments Corporation Top agencies Navy (Department of the Navy)	$241,995	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 143 since FY2021.
59	Headwall Photonics Inc. Top agencies USAF (Department of the Air Force)	$238,607	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 61 since FY2021.
60	Melling LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$235,714	0.1%	Rank history: #13 in FY2021, #63 in FY2023, #95 in FY2024 and not on the FY2025 list; down 47 since FY2021.
61	Wyatt Technology, LLC Top agencies HHS (Department of Health and Human Services)	$235,110	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
62	Potomac River Group, LLC Top agencies USAF (Department of the Air Force)	$231,246	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
63	Nanoscience Instruments Inc. Top agencies HHS (Department of Health and Human Services)	$226,890	0.1%	Rank history: #75 in FY2021, not on the FY2023 list, #45 in FY2024 and not on the FY2025 list; up 12 since FY2021.
64	Hensoldt Inc. Top agencies Army (Department of the Army)	$215,101	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
65	Eotech LLC Top agencies Army (Department of the Army)	$210,156	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
66	Weibel Scientific A/S Top agencies Navy (Department of the Navy)	$205,665	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
67	Sysmex Corporation Through Sysmex America, Inc. Top agencies VA (Department of Veterans Affairs)	$192,363	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
68	Aantilia LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$188,680	0.1%	Rank history: #55 in FY2021 and not on the FY2023–FY2025 lists; down 13 since FY2021.
69	Illinois Tool Works Inc. Top agencies USAF (Department of the Air Force)	$181,280	0.1%	Rank history: not on the FY2021 list, #37 in FY2023, #97 in FY2024 and not on the FY2025 list; new.
70	Dutch Valley Supply Co. Top agencies Navy (Department of the Navy)	$180,527	0.1%	Rank history: not on the FY2021 list, #91 in FY2023, #83 in FY2024 and #30 in FY2025; up 220 since FY2021.
71	LR TECH Inc. Top agencies USAF (Department of the Air Force)	$180,466	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
72	Optics Incorporated Top agencies VA (Department of Veterans Affairs)	$178,171	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 95 since FY2021.
73	Allied High TECH Products, Inc. Top agencies USAF (Department of the Air Force)	$178,043	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
74	Discover Echo Inc. Top agencies VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences)	$176,647	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
75	Veterans Healthcare Supply Solutions, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$176,063	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 31 since FY2021.
76	Interworld Highway, LLC Top agencies DOE (Department of Energy) DOJ (Department of Justice)	$175,253	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
77	Hexagon Metrology Inc. Through Hexagon Manufacturing Intelligence, LLC Top agencies USAF (Department of the Air Force)	$173,825	0.1%	Rank history: #68 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
78	Navitar ,Inc. Top agencies Navy (Department of the Navy)	$170,550	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Optim LLC Top agencies DLA (Defense Logistics Agency)	$169,050	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #55 in FY2024 and #66 in FY2025; up 175 since FY2021.
80	Chant Engineering Co Inc. Top agencies Army (Department of the Army)	$164,760	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #93 in FY2025; new.
81	Witec Instruments Corp. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$164,389	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 161 since FY2021.
82	Crowley Micrographics, Inc. Top agencies DOJ (Department of Justice)	$163,416	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
83	Space Optics Research Labs, LLC Top agencies Navy (Department of the Navy)	$163,330	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #79 in FY2024 and not on the FY2025 list; new.
84	Brimrose Corporation of America Top agencies USAF (Department of the Air Force)	$159,864	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 212 since FY2021.
85	Innova Plex Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$156,278	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
86	MKS Instruments Inc. Through Newport Corp Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$155,464	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #72 in FY2025; new.
87	Advanced Computer Concepts, Inc. Top agencies USAF (Department of the Air Force)	$153,853	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #21 in FY2025; new.
88	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$152,668	0.1%	Rank history: #40 in FY2021 and not on the FY2023–FY2025 lists; down 48 since FY2021.
89	Stingray Optics LLC Through Gooch & Housego (Keene) LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$152,150	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 211 since FY2021.
90	Trilion Quality Systems LLC Top agencies Army (Department of the Army)	$150,000	0.1%	Rank history: not on the FY2021 list, #71 in FY2023 and not on the FY2024–FY2025 lists; new.
91	Lombart Brothers Inc. Top agencies VA (Department of Veterans Affairs)	$148,665	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Oshkosh Corp Through Oshkosh Defense LLC Top agencies DLA (Defense Logistics Agency)	$145,724	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 326 since FY2021.
93	Quantum Opus LLC Top agencies NASA (National Aeronautics and Space Administration)	$145,200	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
94	B & H International LLC Top agencies USAF (Department of the Air Force)	$144,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
95	3T Federal Solutions LLC Top agencies Navy (Department of the Navy)	$140,007	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
96	Ludwig Schunk Stiftung E.V. Through Weiss Technik North America, Inc. Top agencies Army (Department of the Army)	$137,895	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
97	Kuker-Ranken, Inc. Top agencies DOT (Department of Transportation)	$135,472	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
98	Raptor Photonics, Inc. Top agencies DOD (Department of Defense)	$135,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 48 since FY2021.
99	Indicate Technologies, Inc. Top agencies Treasury (Department of the Treasury)	$134,762	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 55 since FY2021.
100	Ekspla-Usa Inc. Top agencies Army (Department of the Army)	$131,650	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 $168 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