Top 100 Contractors in PSC 6650: Optical Instruments, Test Equipment, Components and Accessories, FY2024

Name: Top 100 Contractors in PSC 6650: Optical Instruments, Test Equipment, Components and Accessories, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 71% of FY2024 PSC 6650 contract dollars

Contract obligations: $210,888,259 Net of deobligations, by contracts coded PSC 6650
Contractors: 398 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $66.6 million, 30.8% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 3 awardees Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce)	$66,600,000	30.8%	Rank history: #3 in FY2021, not on the FY2022 list, #30 in FY2023 and #57 in FY2025; up 29 since FY2023.
2	L3Harris Technologies, Inc. 4 awardees, including L3 Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency)	$31,866,504	14.7%	Rank history: #1 in FY2021, #1 in FY2022, #5 in FY2023 and #10 in FY2025; up 3 since FY2023.
3	Olympus America Inc 2 awardees Top agencies USAF (Department of the Air Force)	$13,561,139	6.3%	Rank history: #16 in FY2021, #14 in FY2022, not on the FY2023 list and #3 in FY2025; returned.
4	Kitco Fiber Optics Inc 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy)	$8,898,790	4.1%	Rank history: #25 in FY2021, #54 in FY2022, #12 in FY2023 and not on the FY2025 list; up 8 since FY2023.
5	Satisloh North America Inc. Top agencies Navy (Department of the Navy)	$7,763,087	3.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
6	Optex Systems Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,498,320	3.0%	Rank history: #8 in FY2021, #6 in FY2022, #16 in FY2023 and #11 in FY2025; up 10 since FY2023.
7	Waygate Technologies USA LP 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) USSOCOM (United States Special Operations Command)	$5,931,405	2.7%	Rank history: #7 in FY2021, #2 in FY2022, #17 in FY2023 and not on the FY2025 list; up 10 since FY2023.
8	RTX Corporation 3 awardees, including Hamilton Sundstrand Corporation and Raytheon Company Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,758,747	2.2%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
9	L3HARRIS Aviation Products Inc 2 awardees, including L3Harris Technologies, Inc. and L3 Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration) USSOCOM (United States Special Operations Command) DLA (Defense Logistics Agency)	$4,683,224	2.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
10	Atap Inc. Top agencies Navy (Department of the Navy)	$2,789,034	1.3%	Rank history: not on the FY2021 list, #4 in FY2022, #15 in FY2023 and #9 in FY2025; up 5 since FY2023.
11	Technical Communities, Inc. Top agencies Commerce (Department of Commerce) DOT (Department of Transportation) USAF (Department of the Air Force)	$2,695,981	1.2%	Rank history: #53 in FY2021, #47 in FY2022, not on the FY2023 list and #58 in FY2025; returned.
12	Proaim Americas LLC. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$2,530,450	1.2%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; up 110 since FY2023.
13	Nvts Night Vision Technology Solutions, Inc. Top agencies Army (Department of the Army)	$2,488,424	1.1%	Rank history: not on the FY2021 list, #8 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
14	Gastops Ltd. 2 awardees Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,327,444	1.1%	Rank history: #6 in FY2021, #13 in FY2022, #24 in FY2023 and #8 in FY2025; up 10 since FY2023.
15	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$2,100,000	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 329 since FY2023.
16	Danaher Corporation 5 awardees, including Beckman Coulter, Inc., Leica Microsystems Inc. and Cepheid Top agencies DHA (Defense Health Agency) DOJ (Department of Justice) Navy (Department of the Navy)	$2,067,522	1.0%	Rank history: #22 in FY2021, #16 in FY2022, #21 in FY2023 and #37 in FY2025; up 5 since FY2023.
17	University of Arizona Top agencies Smithsonian (Smithsonian Institution)	$1,433,629	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
18	Itegrity Inc Top agencies Commerce (Department of Commerce)	$1,422,858	0.7%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
19	Ametek Inc. 2 awardees, including Spectro Scientific, Inc. and Taylor Hobson Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,382,134	0.6%	Rank history: #2 in FY2021, #3 in FY2022, #18 in FY2023 and #5 in FY2025; down 1 since FY2023.
20	Government Scientific Source Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOI (Department of the Interior)	$1,290,769	0.6%	Rank history: #23 in FY2021, #24 in FY2022, #65 in FY2023 and not on the FY2025 list; up 45 since FY2023.
21	Zistos Corporation Top agencies DLA (Defense Logistics Agency)	$1,205,352	0.6%	Rank history: #20 in FY2021, #12 in FY2022, #33 in FY2023 and not on the FY2025 list; up 12 since FY2023.
22	Carson Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$1,144,399	0.5%	Rank history: #39 in FY2021, #22 in FY2022, #52 in FY2023 and #28 in FY2025; up 30 since FY2023.
23	Seiler Instrument and Manufacturing Company, Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,078,676	0.5%	Rank history: not on the FY2021 list, #45 in FY2022, #100 in FY2023 and #19 in FY2025; up 77 since FY2023.
24	GFS Supply & Services Company, Inc. Top agencies Navy (Department of the Navy)	$959,720	0.4%	Rank history: #74 in FY2021, not on the FY2022 list, #53 in FY2023 and not on the FY2025 list; up 29 since FY2023.
25	Toptica Photonics Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$904,943	0.4%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
26	Alliant Enterprises, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$856,546	0.4%	Rank history: #35 in FY2021, #21 in FY2022, #88 in FY2023 and not on the FY2025 list; up 62 since FY2023.
27	Corps Medical Supply, LLC Top agencies VA (Department of Veterans Affairs)	$831,616	0.4%	Rank history: #85 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 157 since FY2023.
28	Teledyne Flir Defense, Inc. Top agencies Army (Department of the Army)	$742,595	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Roche Holding AG Through Roche Diagnostics Corporation Top agencies DHA (Defense Health Agency)	$712,750	0.3%	Rank history: #33 in FY2021, #26 in FY2022, #38 in FY2023 and not on the FY2025 list; up 9 since FY2023.
30	Jeol Ltd. Through Jeol Usa, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$690,929	0.3%	Rank history: #4 in FY2021, #18 in FY2022, #66 in FY2023 and not on the FY2025 list; up 36 since FY2023.
31	Blue TECH Inc. Top agencies Navy (Department of the Navy)	$622,268	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 246 since FY2023.
32	Kilgore Flares Company LLC Through Chemring Energetic Devices Inc. Top agencies USAF (Department of the Air Force)	$604,500	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Keyence Corporation of America Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Commerce (Department of Commerce)	$584,183	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
34	S & K Federal Services LLC Top agencies USAF (Department of the Air Force)	$540,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	BNC Corp. Top agencies USAF (Department of the Air Force)	$538,000	0.2%	Rank history: not on the FY2021 list, #40 in FY2022, #20 in FY2023 and #64 in FY2025; down 15 since FY2023.
36	Boston Micromachines Corporation Top agencies Navy (Department of the Navy)	$526,800	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
37	Heraeus Quartz North America LLC Top agencies Navy (Department of the Navy)	$512,808	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	Cardinal Health, Inc. Through Cardinal Health 200, LLC Top agencies VA (Department of Veterans Affairs)	$497,307	0.2%	Rank history: not on the FY2021 list, #35 in FY2022, not on the FY2023 list and not on the FY2025 list; up 168 since FY2023.
39	Tescan USA Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) USAF (Department of the Air Force)	$478,508	0.2%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2025; new.
40	Techcomp USA Inc. Top agencies Navy (Department of the Navy)	$477,106	0.2%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and not on the FY2025 list; up 53 since FY2023.
41	BEI Precision Systems & Space Company, Inc. Top agencies Commerce (Department of Commerce)	$471,550	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Noble Supply & Logistics, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$460,554	0.2%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
43	PPD Development LP 4 awardees, including Thermo Electron North America LLC, FEI Company and Fisher Scientific Company L.L.C. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$397,660	0.2%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and #48 in FY2025; down 7 since FY2023.
44	Xsoptix LLC Top agencies Navy (Department of the Navy)	$396,900	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Nanoscience Instruments Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$395,046	0.2%	Rank history: #75 in FY2021, #63 in FY2022, not on the FY2023 list and not on the FY2025 list; up 157 since FY2023.
46	Leonardo S.p.A. Through DRS Network & Imaging Systems LLC Top agencies DLA (Defense Logistics Agency)	$378,083	0.2%	Rank history: #52 in FY2021, #33 in FY2022, #56 in FY2023 and #50 in FY2025; up 10 since FY2023.
47	Santa Barbara Infrared, Inc. Top agencies USAF (Department of the Air Force)	$361,097	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Jeol Usa, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$355,243	0.2%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
49	Ochoa Enterprises Inc. Top agencies HHS (Department of Health and Human Services)	$315,000	0.1%	Rank history: not on the FY2021 list, #57 in FY2022, not on the FY2023 list and #87 in FY2025; up 203 since FY2023.
50	Brain Vision LLC Top agencies USAF (Department of the Air Force)	$314,190	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	Nikon Americas Inc. 2 awardees, including Nikon Instruments Inc. and Nikon Metrology, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHA (Defense Health Agency)	$312,261	0.1%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and #13 in FY2025; down 26 since FY2023.
52	Bruker Corporation 2 awardees, including Bruker Nano, Inc. and Bruker Scientific LLC Top agencies Navy (Department of the Navy)	$296,026	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Carl Zeiss X-RAY Microscopy Inc. Through Carl Zeiss Microscopy, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USUHS (DOD Uniformed Services University of the Health Sciences)	$295,530	0.1%	Rank history: not on the FY2021 list, #5 in FY2022, #59 in FY2023 and #98 in FY2025; up 6 since FY2023.
54	Oshkosh Corporation Through Oshkosh Defense LLC Top agencies DLA (Defense Logistics Agency)	$278,048	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
55	Optim LLC Top agencies DLA (Defense Logistics Agency)	$276,105	0.1%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list and #66 in FY2025; up 65 since FY2023.
56	Monarch Products Corp. Top agencies DLA (Defense Logistics Agency)	$276,003	0.1%	Rank history: not on the FY2021 list, #49 in FY2022, not on the FY2023 list and not on the FY2025 list; up 55 since FY2023.
57	Polaris Sensor Technologies, LLC Top agencies USAF (Department of the Air Force)	$271,400	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Aimpoint Inc. Top agencies DLA (Defense Logistics Agency)	$264,001	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2025 list; up 10 since FY2023.
59	Coherent Inc. Through Coherent NA, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$253,577	0.1%	Rank history: not on the FY2021 list, #41 in FY2022, #73 in FY2023 and not on the FY2025 list; up 14 since FY2023.
60	Federal Resources Supply Company Top agencies USAF (Department of the Air Force)	$244,741	0.1%	Rank history: #10 in FY2021, #9 in FY2022, not on the FY2023 list and not on the FY2025 list; up 92 since FY2023.
61	Quality Vision International Inc. Top agencies Army (Department of the Army)	$244,500	0.1%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
62	Keyence Corporation Through Keyence Corporation of America Top agencies Army (Department of the Army)	$243,392	0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and not on the FY2025 list; down 21 since FY2023.
63	Handix Scientific Inc. Top agencies Commerce (Department of Commerce)	$240,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 266 since FY2023.
64	Carl Zeiss Inc. Through Carl Zeiss Industrial Quality Solutions LLC Top agencies USAF (Department of the Air Force)	$235,640	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	Telops Usa, Inc. Top agencies USAF (Department of the Air Force)	$231,135	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
66	Merck KG AUF Aktien Through EMD Millipore Corp Top agencies HHS (Department of Health and Human Services)	$228,631	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	E.a.s. Manufacturing Co., Inc. Top agencies Navy (Department of the Navy)	$227,540	0.1%	Rank history: #36 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 56 since FY2023.
68	Smart Eye Aktiebolag (PUBL) Top agencies Navy (Department of the Navy)	$225,250	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Agilent Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$222,714	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Avro Inc. Top agencies Navy (Department of the Navy)	$221,025	0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
71	Luna Innovations Incorporated Top agencies Navy (Department of the Navy)	$219,950	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 149 since FY2023.
72	Elbit Systems of America LLC Through Elbitamerica, Inc. Top agencies DLA (Defense Logistics Agency)	$216,840	0.1%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
73	Lavision GMBH Top agencies Navy (Department of the Navy)	$215,388	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 222 since FY2023.
74	3Sae Technologies, Inc. Top agencies USAF (Department of the Air Force)	$204,995	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Berkshire Hathaway Inc. Through Kitco Fiber Optics Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$200,801	0.1%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
76	Rigaku Americas Holding Inc Top agencies Smithsonian (Smithsonian Institution)	$200,000	0.1%	Rank history: #84 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 198 since FY2023.
77	Photon Gear Inc. Top agencies USAF (Department of the Air Force)	$198,689	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Telops Inc. Top agencies Army (Department of the Army)	$197,637	0.1%	Rank history: #9 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
79	Space Optics Research Labs, LLC Top agencies Navy (Department of the Navy)	$195,813	0.1%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
80	Pion Inc. Top agencies Navy (Department of the Navy)	$194,697	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Steris Corporation Top agencies VA (Department of Veterans Affairs)	$194,590	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Laser Techniques Company, LLC Top agencies Army (Department of the Army)	$188,670	0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; up 51 since FY2023.
83	Dutch Valley Supply Co. Top agencies Navy (Department of the Navy)	$182,011	0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #91 in FY2023 and #30 in FY2025; up 8 since FY2023.
84	Aarcorp Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$179,091	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 47 since FY2023.
85	Dixie Scientific Services LLC Top agencies DHS (Department of Homeland Security)	$174,338	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Biofire Diagnostics LLC Top agencies VA (Department of Veterans Affairs)	$174,124	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Digital Microscope Associate LLC Top agencies National Gallery of Art Treasury (Department of the Treasury)	$173,280	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	International Television Corp Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$171,990	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2025 list; down 2 since FY2023.
89	Optotune Holding AG Through Optotune Switzerland AG Top agencies NASA (National Aeronautics and Space Administration)	$170,979	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and not on the FY2025 list; down 17 since FY2023.
90	NU-TEK Precision Optical Corp. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$166,590	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Hitech Instruments, Inc. Top agencies Commerce (Department of Commerce) Treasury (Department of the Treasury) Navy (Department of the Navy)	$165,270	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Tevet LLC Top agencies DOI (Department of the Interior) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$164,321	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; up 59 since FY2023.
93	Atlas Instrument Co Inc. Top agencies DLA (Defense Logistics Agency)	$162,536	0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; up 32 since FY2023.
94	Hilgers Technisches Buero E.k. Top agencies DOI (Department of the Interior)	$160,373	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Melling LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$160,092	0.1%	Rank history: #13 in FY2021, #60 in FY2022, #63 in FY2023 and not on the FY2025 list; down 32 since FY2023.
96	Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services)	$156,218	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Illinois Tool Works Inc. Through MTS Systems Corporation Top agencies USAF (Department of the Air Force)	$154,897	0.1%	Rank history: not on the FY2021 list, #69 in FY2022, #37 in FY2023 and not on the FY2025 list; down 60 since FY2023.
98	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency)	$154,090	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	Ciqima Federal Services LLC Top agencies USAF (Department of the Air Force)	$150,445	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	General Dynamics Corporation Through General Dynamics Land Systems - Canada Corporation Top agencies DLA (Defense Logistics Agency)	$150,105	0.1%	Rank history: not on the FY2021 list, #20 in FY2022, not on the FY2023 list and #89 in FY2025; up 77 since FY2023.

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100 of 398 contractors listed here. See the rest on GovTribe.

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 $216 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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

Who were the top 10 PSC 6650 contractors in FY2024?

1. Lockheed Martin Corporation ($66.6M), 2. L3Harris Technologies, Inc. ($31.9M), 3. Olympus America Inc ($13.6M), 4. Kitco Fiber Optics Inc ($8.9M), 5. Satisloh North America Inc. ($7.76M), 6. Optex Systems Inc. ($6.5M), 7. Waygate Technologies USA LP ($5.93M), 8. RTX Corporation ($4.76M), 9. L3HARRIS Aviation Products Inc ($4.68M), 10. Atap Inc. ($2.79M).

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