Top 100 Contractors in NAICS 334118: Computer Terminal and Other Computer Peripheral Equipment Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 334118: Computer Terminal and Other Computer Peripheral Equipment Manufacturing, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 64% of FY2021 NAICS 334118 contract dollars

Contract obligations: $187,628,508 Net of deobligations, by contracts coded NAICS 334118
Contractors: 660 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $50.7 million, 26.3% 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	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Army (Department of the Army)	$50,677,291	26.3%	Rank history: #2 in FY2022, #1 in FY2023, #7 in FY2024 and not on the FY2025 list; up 1 since FY2020.
2	Leonardo S.p.A. 3 awardees, including Laurel Technologies Partnership, DRS Network & Imaging Systems LLC and DRS Training & Control Systems, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$38,539,655	20.0%	Rank history: #1 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since FY2020.
3	Fcn, Inc. Top agencies Treasury (Department of the Treasury) Commerce (Department of Commerce) DOS (Department of State)	$7,748,887	4.0%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
4	Xerox Holdings Corp 3 awardees, including Xerox Corporation and Capitol Office Solutions LLC Top agencies Treasury (Department of the Treasury) VA (Department of Veterans Affairs)	$5,431,132	2.8%	Rank history: #5 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
5	Dev Holdings Top agencies DODEA (Department of Defense Education Activity)	$5,296,926	2.8%	Rank history: #6 in FY2022, not on the FY2023 list, #18 in FY2024 and not on the FY2025 list; unchanged since FY2020.
6	R. S. Means Company LLC Through Censis Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$3,748,656	1.9%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; up 112 since FY2020.
7	Mercury Computer Systems Inc. Through Mercury Mission Systems LLC Top agencies Navy (Department of the Navy)	$3,574,495	1.9%	Rank history: not on the FY2022–FY2024 lists and #93 in FY2025; new, not ranked in FY2020.
8	CDO Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$2,705,515	1.4%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
9	Transdigm Group Incorporated 2 awardees, including Scioteq LLC Top agencies Navy (Department of the Navy)	$2,566,039	1.3%	Rank history: not on the FY2022 list, #54 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
10	3D Perception Inc. Top agencies USAF (Department of the Air Force)	$2,250,095	1.2%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
11	Paragon One Group LLC Top agencies DLA (Defense Logistics Agency)	$2,105,830	1.1%	Rank history: #28 in FY2022, not on the FY2023 list, #52 in FY2024 and #44 in FY2025; up 7 since FY2020.
12	Digital Technologies, Inc. Top agencies Commerce (Department of Commerce)	$1,759,320	0.9%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
13	Regency Consulting Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$1,597,421	0.8%	Rank history: #19 in FY2022, #27 in FY2023, #36 in FY2024 and #42 in FY2025; up 33 since FY2020.
14	Idemia Identity & Security USA LLC Top agencies DHS (Department of Homeland Security)	$1,414,886	0.7%	Rank history: #3 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
15	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy)	$1,362,517	0.7%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; up 125 since FY2020.
16	Leidos, Inc. Top agencies Army (Department of the Army)	$1,321,821	0.7%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
17	Integration Technologies Group, Inc. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) DHRA (Defense Human Resources Activity)	$1,287,400	0.7%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
18	New TECH Solutions, Inc. Top agencies DODEA (Department of Defense Education Activity) Navy (Department of the Navy) DOS (Department of State)	$1,256,923	0.7%	Rank history: #39 in FY2022, #39 in FY2023, #23 in FY2024 and #21 in FY2025; up 1 since FY2020.
19	Telemetry & Communications Systems, Inc. Top agencies Navy (Department of the Navy)	$1,233,100	0.6%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
20	Countertrade Products, Inc. Top agencies Commerce (Department of Commerce) DLA (Defense Logistics Agency) USAID (US Agency for International Development)	$1,224,148	0.6%	Rank history: #52 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
21	Annapolis Micro Systems, Inc. Top agencies OSD (Office of the Secretary of Defense)	$960,840	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	JFL Consulting, LLC Top agencies Navy (Department of the Navy)	$840,320	0.4%	Rank history: #21 in FY2022, #29 in FY2023, not on the FY2024 list and #25 in FY2025; new, not ranked in FY2020.
23	Ideal System Solutions, Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) USAF (Department of the Air Force)	$762,976	0.4%	Rank history: #11 in FY2022, #22 in FY2023, #17 in FY2024 and #10 in FY2025; up 24 since FY2020.
24	Sunhillo Corp Top agencies DOT (Department of Transportation)	$762,608	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Acacia Investment Holdings LLC Through Caci Idt, LLC Top agencies DOS (Department of State) Commerce (Department of Commerce)	$699,846	0.4%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
26	Government Acquisitions LLC Top agencies DOS (Department of State) Commerce (Department of Commerce) Treasury (Department of the Treasury)	$689,294	0.4%	Rank history: #57 in FY2022, #46 in FY2023, #65 in FY2024 and not on the FY2025 list; up 9 since FY2020.
27	Team One Repair, Inc. Top agencies EEOC (Equal Employment Opportunity Commission) Navy (Department of the Navy) USDA (Department of Agriculture)	$673,213	0.3%	Rank history: #4 in FY2022, #7 in FY2023, #81 in FY2024 and #60 in FY2025; up 383 since FY2020.
28	CDW Corporation 2 awardees, including CDW Government LLC Top agencies DOS (Department of State) DOL (Department of Labor) Army (Department of the Army)	$665,168	0.3%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; up 43 since FY2020.
29	PC Connection Inc. Through Govconnection Inc. Top agencies DOS (Department of State) Army (Department of the Army) DOJ (Department of Justice)	$663,995	0.3%	Rank history: not on the FY2022–FY2025 lists; up 82 since FY2020.
30	Gebra-It GMBH Top agencies DECA (Defense Commissary Agency)	$577,229	0.3%	Rank history: #29 in FY2022, #19 in FY2023, #37 in FY2024 and #34 in FY2025; up 21 since FY2020.
31	Aita Consulting Services Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$556,995	0.3%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; down 18 since FY2020.
32	Dologic Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$552,080	0.3%	Rank history: #31 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
33	Thundercat Technology, LLC Top agencies VA (Department of Veterans Affairs) DOS (Department of State) Navy (Department of the Navy)	$540,857	0.3%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; down 19 since FY2020.
34	Motorola Inc Through Motorola Solutions, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State)	$515,291	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Dbisp LLC Top agencies OPM (Office of Personnel Management) USAF (Department of the Air Force)	$508,071	0.3%	Rank history: not on the FY2022–FY2025 lists; down 25 since FY2020.
36	National Instruments Corp Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security)	$491,431	0.3%	Rank history: #41 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
37	Orbit International Corp. Top agencies Navy (Department of the Navy)	$482,858	0.3%	Rank history: not on the FY2022 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
38	Arrow Electronics, Inc. 2 awardees, including EC America, Inc. Top agencies DLA (Defense Logistics Agency)	$471,781	0.2%	Rank history: not on the FY2022–FY2025 lists; up 302 since FY2020.
39	Cortron, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation) USAF (Department of the Air Force)	$465,585	0.2%	Rank history: #86 in FY2022, #63 in FY2023, #38 in FY2024 and not on the FY2025 list; up 227 since FY2020.
40	Boca Systems, Inc. Top agencies DOT (Department of Transportation)	$441,498	0.2%	Rank history: not on the FY2022–FY2023 lists, #19 in FY2024 and #35 in FY2025; new, not ranked in FY2020.
41	Thomas Electronics, Inc. Top agencies DLA (Defense Logistics Agency)	$435,744	0.2%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
42	NCS Technologies Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$424,992	0.2%	Rank history: not on the FY2022–FY2024 lists and #9 in FY2025; new, not ranked in FY2020.
43	Dynatouch Corporation Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$423,496	0.2%	Rank history: #43 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
44	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$405,956	0.2%	Rank history: #25 in FY2022, #71 in FY2023, #74 in FY2024 and #73 in FY2025; down 17 since FY2020.
45	Colossal Contracting LLC Top agencies HHS (Department of Health and Human Services)	$403,529	0.2%	Rank history: not on the FY2022–FY2025 lists; up 141 since FY2020.
46	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$401,687	0.2%	Rank history: not on the FY2022 list, #30 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
47	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$396,878	0.2%	Rank history: #23 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
48	Symbolic Technology Inc. Top agencies DLA (Defense Logistics Agency)	$389,428	0.2%	Rank history: #22 in FY2022, not on the FY2023–FY2024 lists and #74 in FY2025; down 6 since FY2020.
49	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$378,653	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Milcots LLC Top agencies Navy (Department of the Navy)	$352,994	0.2%	Rank history: not on the FY2022 list, #42 in FY2023, #50 in FY2024 and #54 in FY2025; up 345 since FY2020.
51	Lyme Computer Systems, Inc. Top agencies Commerce (Department of Commerce) DOJ (Department of Justice) USSOCOM (United States Special Operations Command)	$341,969	0.2%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
52	Govsmart, Inc. Top agencies Commerce (Department of Commerce) DOS (Department of State) Treasury (Department of the Treasury)	$341,788	0.2%	Rank history: not on the FY2022–FY2024 lists and #89 in FY2025; up 12 since FY2020.
53	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$341,204	0.2%	Rank history: not on the FY2022 list, #16 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
54	Cellebrite Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) DOS (Department of State)	$333,510	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 63 since FY2020.
55	Sterling Computers Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$332,419	0.2%	Rank history: #27 in FY2022, not on the FY2023 list, #20 in FY2024 and not on the FY2025 list; up 26 since FY2020.
56	The Culver Group LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$320,377	0.2%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 244 since FY2020.
57	Arlington Capital Partners IV, L.P. Through Tyto Athene, LLC Top agencies Army (Department of the Army)	$317,371	0.2%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 347 since FY2020.
58	Alta Data Technologies LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$313,803	0.2%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; up 163 since FY2020.
59	Coolfire Solutions, Inc. Top agencies USAF (Department of the Air Force)	$299,531	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Oshkosh Corp Through Oshkosh Defense LLC Top agencies Army (Department of the Army)	$280,136	0.1%	Rank history: #10 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
61	Glacier Support Services, LLC Top agencies USDA (Department of Agriculture)	$280,000	0.1%	Rank history: not on the FY2022–FY2023 lists, #12 in FY2024 and not on the FY2025 list; down 38 since FY2020.
62	B & H International LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$272,513	0.1%	Rank history: not on the FY2022–FY2025 lists; up 327 since FY2020.
63	The Janz Corp Top agencies VA (Department of Veterans Affairs)	$272,257	0.1%	Rank history: not on the FY2022–FY2025 lists; up 343 since FY2020.
64	Wyandotte Nation Through Wyandotte Technologies Top agencies HHS (Department of Health and Human Services)	$267,692	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 294 since FY2020.
65	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies Army (Department of the Army)	$265,593	0.1%	Rank history: not on the FY2022–FY2025 lists; up 393 since FY2020.
66	Decisionpoint Technologies Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$259,489	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Cad / Cam Services, Inc. Top agencies USAF (Department of the Air Force)	$258,823	0.1%	Rank history: not on the FY2022–FY2023 lists, #55 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
68	GSX Groupware Solutions Top agencies Treasury (Department of the Treasury)	$255,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Norseman Inc. Top agencies Navy (Department of the Navy)	$246,457	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Eizo Nanao Corporation Through Eizo Rugged Solutions Inc. Top agencies Navy (Department of the Navy)	$246,230	0.1%	Rank history: #15 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 42 since FY2020.
71	Federal Key LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) USAF (Department of the Air Force)	$242,938	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
72	Nida Corporation Top agencies Army (Department of the Army)	$237,056	0.1%	Rank history: not on the FY2022–FY2025 lists; up 326 since FY2020.
73	Trigon Imaging Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$235,587	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Data & Graphics, S.A. De C.V. Top agencies DOS (Department of State)	$233,627	0.1%	Rank history: not on the FY2022–FY2025 lists; up 260 since FY2020.
75	Military Pilot Supply of Texas, Inc. Top agencies Navy (Department of the Navy)	$231,502	0.1%	Rank history: not on the FY2022–FY2025 lists; up 353 since FY2020.
76	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$231,240	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Government Project Services SAS Through Project Services International Corporation, Inc. Top agencies DOS (Department of State)	$230,109	0.1%	Rank history: not on the FY2022–FY2025 lists; up 299 since FY2020.
78	Iron Bow Technologies, LLC Top agencies DOJ (Department of Justice) DOS (Department of State)	$228,039	0.1%	Rank history: not on the FY2022–FY2025 lists; down 70 since FY2020.
79	Gem Network Systems LLC Top agencies Navy (Department of the Navy) DOS (Department of State) Army (Department of the Army)	$227,936	0.1%	Rank history: not on the FY2022–FY2025 lists; up 147 since FY2020.
80	Xerox It Solutions LLC Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$227,338	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	UAS Aerial Solutions LLC Top agencies HHS (Department of Health and Human Services)	$226,472	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Delta Information Systems Inc. Top agencies Navy (Department of the Navy)	$222,163	0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 28 since FY2020.
83	Technical Communities, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services)	$221,471	0.1%	Rank history: not on the FY2022–FY2025 lists; up 140 since FY2020.
84	J & N Marketing, Inc. Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$216,533	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Viewpoint Systems LLC Top agencies Navy (Department of the Navy)	$215,824	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Seneca Biztek, Inc. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$212,438	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Tevet LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$212,114	0.1%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 89 since FY2020.
88	Lockheed Martin Corporation Top agencies Navy (Department of the Navy)	$209,852	0.1%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
89	Essentium Inc. Top agencies USAF (Department of the Air Force)	$209,450	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Axelliant, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$207,842	0.1%	Rank history: not on the FY2022–FY2025 lists; up 230 since FY2020.
91	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$202,783	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Dimo Corp Top agencies DLA (Defense Logistics Agency)	$199,541	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Neuro Logic Systems, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$198,220	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Imaging Business Machines LLC Top agencies DOJ (Department of Justice) SSA (Social Security Administration)	$196,421	0.1%	Rank history: #32 in FY2022, #21 in FY2023, #46 in FY2024 and #26 in FY2025; up 34 since FY2020.
95	Washington Foundries Inc. Top agencies DLA (Defense Logistics Agency)	$192,498	0.1%	Rank history: not on the FY2022–FY2024 lists and #66 in FY2025; new, not ranked in FY2020.
96	Nag, LLC Top agencies Navy (Department of the Navy)	$191,960	0.1%	Rank history: not on the FY2022–FY2023 lists, #75 in FY2024 and #43 in FY2025; up 320 since FY2020.
97	SKE Technical Services GMBH Through Actemium Cegelec Mitte GMBH Top agencies DLA (Defense Logistics Agency)	$187,079	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Akira Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$178,212	0.1%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
99	Data Connect Enterprise Inc. Top agencies DLA (Defense Logistics Agency)	$176,570	0.1%	Rank history: not on the FY2022–FY2025 lists; up 375 since FY2020.
100	Wizard Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$176,387	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.

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100 of 660 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 $193 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

Who were the top 10 NAICS 334118 contractors in FY2021?

1. Leidos Holdings, Inc. ($50.7M), 2. Leonardo S.p.A. ($38.5M), 3. Fcn, Inc. ($7.75M), 4. Xerox Holdings Corp ($5.43M), 5. Dev Holdings ($5.3M), 6. R. S. Means Company LLC ($3.75M), 7. Mercury Computer Systems Inc. ($3.57M), 8. CDO Technologies Inc. ($2.71M), 9. Transdigm Group Incorporated ($2.57M), 10. 3D Perception Inc. ($2.25M).

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