Top 100 Department of Homeland Security Contractors, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Deployed Resources LLC Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services 332311 Prefabricated Metal Building and Component Manufacturing	$756,902,909	3.1%	Rank history: #7 in FY2021, #1 in FY2023, #1 in FY2024 and #16 in FY2025; up 6 since FY2021.
2	The GEO Group, Inc. 3 awardees, including B.i. Incorporated Top NAICS codes 561210 Facilities Support Services 561612 Security Guards and Patrol Services 922140 Correctional Institutions	$668,014,193	2.7%	Rank history: #3 in FY2021, #3 in FY2023, #2 in FY2024 and #4 in FY2025; up 1 since FY2021.
3	Leidos Holdings, Inc. 19 awardees, including Leidos, Inc., Leidos Security Detection & Automation, Inc. and QTC Medical Services Inc. Top NAICS codes 541519 Other Computer Related Services 811219 Other Electronic and Precision Equipment Repair and Maintenance 541512 Computer Systems Design Services	$648,412,399	2.7%	Rank history: #1 in FY2021, #4 in FY2023, #6 in FY2024 and #6 in FY2025; down 2 since FY2021.
4	General Dynamics Corporation 12 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics One Source LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services 541513 Computer Facilities Management Services	$623,452,940	2.6%	Rank history: #2 in FY2021, #8 in FY2023, #5 in FY2024 and #10 in FY2025; down 2 since FY2021.
5	CACI International Inc. 11 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Mastodon Design LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541330 Engineering Services	$616,296,445	2.5%	Rank history: #4 in FY2021, #2 in FY2023, #3 in FY2024 and #3 in FY2025; down 1 since FY2021.
6	Securitas AB 2 awardees, including Paragon Systems Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths)	$426,328,938	1.8%	Rank history: #5 in FY2021, #7 in FY2023, #16 in FY2024 and not on the FY2025 list; down 1 since FY2021.
7	Dell Federal Systems L.P. 3 awardees, including Dell Marketing L.P. and RSA Security LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 561920 Convention and Trade Show Organizers	$366,948,608	1.5%	Rank history: #19 in FY2021, #16 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2021.
8	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541511 Custom Computer Programming Services	$349,801,539	1.4%	Rank history: #11 in FY2021, #9 in FY2023, #4 in FY2024 and #11 in FY2025; up 3 since FY2021.
9	Triple Canopy Inc. 5 awardees, including Omniplex World Services Corporation, Centerra Group, LLC and Academi Training Center LLC Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths) 561611 Investigation and Personal Background Check Services	$278,479,393	1.1%	Rank history: #9 in FY2021, #96 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
10	Mvm, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$247,107,121	1.0%	Rank history: #28 in FY2021, #15 in FY2023, #18 in FY2024 and #31 in FY2025; up 18 since FY2021.
11	Science Applications International Corporation 6 awardees, including Forfeiture Support Associates LLC and Halfaker and Associates, LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$223,469,429	0.9%	Rank history: #17 in FY2021, #19 in FY2023, #19 in FY2024 and #20 in FY2025; up 6 since FY2021.
12	Tutor Perini Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction	$219,609,967	0.9%	Rank history: #44 in FY2021 and not on the FY2023–FY2025 lists; up 32 since FY2021.
13	Techflow, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 541511 Custom Computer Programming Services	$215,202,443	0.9%	Rank history: #20 in FY2021, #18 in FY2023, #12 in FY2024 and #21 in FY2025; up 7 since FY2021.
14	Caddell Construction Co., Inc. Through Caddell Construction Co. (De), LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$214,519,600	0.9%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
15	Classic Air Charter Inc. Top NAICS codes 481219 Other Nonscheduled Air Transportation	$213,261,803	0.9%	Rank history: #33 in FY2021, #41 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2021.
16	Austal Limited Through Austal Usa, LLC Top NAICS codes 336611 Ship Building and Repairing	$208,286,912	0.9%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
17	Deloitte LLP 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$204,505,275	0.8%	Rank history: #10 in FY2021, #20 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
18	Champion Home Builders Inc. Top NAICS codes 321991 Manufactured Home (Mobile Home) Manufacturing	$201,222,416	0.8%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
19	Mantech International Corporation 5 awardees, including Mantech Advanced Systems International, Inc. and Mantech SRS Technologies, Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$200,268,481	0.8%	Rank history: #21 in FY2021, #23 in FY2023, #28 in FY2024 and #35 in FY2025; up 2 since FY2021.
20	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$193,715,112	0.8%	Rank history: #23 in FY2021, #17 in FY2023, #17 in FY2024 and #71 in FY2025; up 3 since FY2021.
21	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$172,881,297	0.7%	Rank history: #29 in FY2021, #48 in FY2023, #54 in FY2024 and #13 in FY2025; up 8 since FY2021.
22	Accenture Federal Services LLC 2 awardees Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541612 Human Resources Consulting Services	$170,317,371	0.7%	Rank history: #16 in FY2021 and not on the FY2023–FY2025 lists; down 6 since FY2021.
23	American Medical Response Inc. Top NAICS codes 621910 Ambulance Services	$161,487,532	0.7%	Rank history: #8 in FY2021 and not on the FY2023–FY2025 lists; down 15 since FY2021.
24	International Business Machines Corporation 3 awardees Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541330 Engineering Services	$159,679,459	0.7%	Rank history: #24 in FY2021, #44 in FY2023, #37 in FY2024 and #29 in FY2025; unchanged since FY2021.
25	Amentum Services, Inc. 2 awardees, including Dyncorp International LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$152,596,086	0.6%	Rank history: not on the FY2021 list, #22 in FY2023 and not on the FY2024–FY2025 lists; up 102 since FY2021.
26	HP Enterprise Services LLC 7 awardees, including Peraton Technology Services Inc., Peraton Inc. and Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541330 Engineering Services	$148,917,102	0.6%	Rank history: #36 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2021.
27	Corecivic, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 922190 Other Justice, Public Order, and Safety Activities	$139,839,556	0.6%	Rank history: #27 in FY2021, #28 in FY2023, #20 in FY2024 and #15 in FY2025; unchanged since FY2021.
28	Bollinger Shipyards Inc 2 awardees, including Bollinger Shipyards Lockport, L.L.C. and Chand, L.L.C. Top NAICS codes 336611 Ship Building and Repairing 333999 All Other Miscellaneous General Purpose Machinery Manufacturing 339999 All Other Miscellaneous Manufacturing	$135,047,422	0.6%	Rank history: #14 in FY2021, #29 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2021.
29	At&T Inc. 6 awardees, including At&T Enterprises, LLC, Att Mobility LLC and At&T Technical Services Company, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517210 Wireless Telecommunications Carriers (except Satellite)	$130,225,090	0.5%	Rank history: #60 in FY2021, #26 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2021.
30	On Assignment, Inc. 2 awardees, including ECS Federal, LLC and Indrasoft Inc. Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$128,701,446	0.5%	Rank history: #39 in FY2021, #34 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
31	Deloitte Consulting LLP 2 awardees Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 611430 Professional and Management Development Training	$127,801,953	0.5%	Rank history: not on the FY2021 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new.
32	Nana Regional Corporation Inc 11 awardees, including Akima Global Services, LLC, Affigent, LLC and Rivertech LLC Top NAICS codes 561612 Security Guards and Patrol Services 541519 Other Computer Related Services 541330 Engineering Services	$126,685,740	0.5%	Rank history: #25 in FY2021, #32 in FY2023, #89 in FY2024 and not on the FY2025 list; down 7 since FY2021.
33	Guidehouse Inc. 3 awardees, including Guidehouse Digital LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$122,428,741	0.5%	Rank history: #59 in FY2021, #33 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2021.
34	MLU Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction 484110 General Freight Trucking, Local	$120,598,923	0.5%	Rank history: not on the FY2021 list, #67 in FY2023, not on the FY2024 list and #75 in FY2025; up 421 since FY2021.
35	Covenant Aviation Security LLC Top NAICS codes 561612 Security Guards and Patrol Services	$120,236,904	0.5%	Rank history: #30 in FY2021, #36 in FY2023, #26 in FY2024 and not on the FY2025 list; down 5 since FY2021.
36	Loyal Source Government Services LLC Top NAICS codes 561320 Temporary Help Services	$119,684,186	0.5%	Rank history: #26 in FY2021, #12 in FY2023, #11 in FY2024 and #40 in FY2025; down 10 since FY2021.
37	RTX Corporation 27 awardees, including Rockwell Collins, Inc., Raytheon Company and Hornet Acquisitionco, LLC Top NAICS codes 541330 Engineering Services 488190 Other Support Activities for Air Transportation 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$117,666,720	0.5%	Rank history: #22 in FY2021, #56 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2021.
38	Rq-Aecom 2 JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$116,178,202	0.5%	Rank history: #40 in FY2021, #89 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2021.
39	CGI Technologies and Solutions Inc. 3 awardees, including CGI Federal Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 511210 Software Publishers	$103,175,316	0.4%	Rank history: #55 in FY2021, #21 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2021.
40	PAE Government Services Inc. 6 awardees, including FCI Federal, LLC, PAE Professional Services, LLC and PAE National Security Solutions LLC Top NAICS codes 561110 Office Administrative Services 541513 Computer Facilities Management Services 541990 All Other Professional, Scientific, and Technical Services	$102,103,744	0.4%	Rank history: #18 in FY2021 and not on the FY2023–FY2025 lists; down 22 since FY2021.
41	STG International, Inc. Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$98,064,085	0.4%	Rank history: #41 in FY2021, #43 in FY2023, #44 in FY2024 and not on the FY2025 list; unchanged since FY2021.
42	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$91,266,523	0.4%	Rank history: #85 in FY2021, #31 in FY2023, #24 in FY2024 and #30 in FY2025; up 43 since FY2021.
43	LMI Consulting, LLC Top NAICS codes 541330 Engineering Services	$88,520,685	0.4%	Rank history: not on the FY2021 list, not on the FY2023 list, #25 in FY2024 and #43 in FY2025; new.
44	Panamerica Computers, Inc. 2 awardees Top NAICS codes 541519 Other Computer Related Services	$86,735,046	0.4%	Rank history: #69 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2021.
45	Eastern Shipbuilding Group, Inc. Top NAICS codes 336611 Ship Building and Repairing	$85,588,007	0.4%	Rank history: #6 in FY2021, #27 in FY2023, #48 in FY2024 and not on the FY2025 list; down 39 since FY2021.
46	Ranger Land Systems, Inc. Top NAICS codes 561210 Facilities Support Services 532490 Other Commercial and Industrial Machinery and Equipment Rental and Leasing	$82,595,041	0.3%	Rank history: not on the FY2021 list, #24 in FY2023 and not on the FY2024–FY2025 lists; up 154 since FY2021.
47	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services	$81,552,051	0.3%	Rank history: #50 in FY2021, #42 in FY2023, #74 in FY2024 and #81 in FY2025; up 3 since FY2021.
48	Akira Technologies Inc. Top NAICS codes 541519 Other Computer Related Services 811219 Other Electronic and Precision Equipment Repair and Maintenance	$81,209,198	0.3%	Rank history: #58 in FY2021, #55 in FY2023, #61 in FY2024 and not on the FY2025 list; up 10 since FY2021.
49	Smiths Group PLC 3 awardees, including Smiths Detection Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance	$79,924,532	0.3%	Rank history: #32 in FY2021, #49 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
50	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541511 Custom Computer Programming Services	$77,200,081	0.3%	Rank history: #88 in FY2021, #71 in FY2023, #59 in FY2024 and not on the FY2025 list; up 38 since FY2021.
51	L3Harris Technologies, Inc. 17 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and L3Harris Global Communications, Inc. Top NAICS codes 336411 Aircraft Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$75,765,634	0.3%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #100 in FY2025; up 98 since FY2021.
52	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services	$75,175,642	0.3%	Rank history: #64 in FY2021, #62 in FY2023, #57 in FY2024 and #77 in FY2025; up 12 since FY2021.
53	ITC Federal, LLC Top NAICS codes 561110 Office Administrative Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$74,633,540	0.3%	Rank history: #84 in FY2021, #38 in FY2023, #38 in FY2024 and #70 in FY2025; up 31 since FY2021.
54	Sciolex Corporation Top NAICS codes 561110 Office Administrative Services	$74,500,348	0.3%	Rank history: #75 in FY2021 and not on the FY2023–FY2025 lists; up 21 since FY2021.
55	Strategic Enterprise Solutions Inc. Through Steampunk, Inc. Top NAICS codes 541512 Computer Systems Design Services	$73,366,718	0.3%	Rank history: #86 in FY2021, #69 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2021.
56	Grant Thornton International Ltd 2 awardees, including Grant Thornton Public Sector LLC and Grant Thornton LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541219 Other Accounting Services	$73,164,606	0.3%	Rank history: #74 in FY2021 and not on the FY2023–FY2025 lists; up 18 since FY2021.
57	Gibbco LLC Top NAICS codes 321991 Manufactured Home (Mobile Home) Manufacturing	$73,097,768	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
58	The Rand Corporation Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$71,865,882	0.3%	Rank history: #63 in FY2021, #52 in FY2023, #63 in FY2024 and not on the FY2025 list; up 5 since FY2021.
59	The Dewberry Companies LC Through Dewberry Engineers Inc. Top NAICS codes 561210 Facilities Support Services	$71,825,242	0.3%	Rank history: not on the FY2021 list, #39 in FY2023 and not on the FY2024–FY2025 lists; up 160 since FY2021.
60	Vighter LLC Top NAICS codes 561320 Temporary Help Services	$70,000,000	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
61	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top NAICS codes 517911 Telecommunications Resellers	$68,767,016	0.3%	Rank history: #61 in FY2021, #47 in FY2023, #46 in FY2024 and not on the FY2025 list; unchanged since FY2021.
62	Lockheed Martin Corporation 9 awardees, including Sikorsky Aircraft Corporation Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541330 Engineering Services 336411 Aircraft Manufacturing	$67,658,675	0.3%	Rank history: #12 in FY2021, #35 in FY2023, #51 in FY2024 and #84 in FY2025; down 50 since FY2021.
63	Anduril Industries Inc. Top NAICS codes 541512 Computer Systems Design Services	$67,211,616	0.3%	Rank history: not on the FY2021 list, #61 in FY2023, #58 in FY2024 and #41 in FY2025; new.
64	Caddell Nova A JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$66,541,440	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
65	GSH of Alabama LLC Top NAICS codes 321991 Manufactured Home (Mobile Home) Manufacturing 443141 Household Appliance Stores	$65,881,867	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
66	Northrop Grumman Corporation 10 awardees, including Northrop Grumman Systems Corporation and Remotec, Inc. Top NAICS codes 336411 Aircraft Manufacturing 511210 Software Publishers 811219 Other Electronic and Precision Equipment Repair and Maintenance	$65,842,094	0.3%	Rank history: #34 in FY2021, #70 in FY2023, #73 in FY2024 and not on the FY2025 list; down 32 since FY2021.
67	Arctic Slope Regional Corporation 4 awardees, including Asrc Federal Field Services, LLC and Asrc Federal Data Network Technologies, LLC Top NAICS codes 561210 Facilities Support Services 541512 Computer Systems Design Services	$65,777,799	0.3%	Rank history: #89 in FY2021, #60 in FY2023, not on the FY2024 list and #74 in FY2025; up 22 since FY2021.
68	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation	$65,128,807	0.3%	Rank history: #53 in FY2021, #65 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2021.
69	Reli Group Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$64,555,677	0.3%	Rank history: #65 in FY2021 and not on the FY2023–FY2025 lists; down 4 since FY2021.
70	Dev Technology Group Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$64,479,810	0.3%	Rank history: #49 in FY2021, #46 in FY2023, #40 in FY2024 and #32 in FY2025; down 21 since FY2021.
71	Airbus Americas Inc. 3 awardees, including Airbus Helicopters, Inc., Airbus DS Military Aircraft, Inc. and Airbus US Space & Defense Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 488190 Other Support Activities for Air Transportation 541330 Engineering Services	$64,009,147	0.3%	Rank history: #98 in FY2021, #91 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2021.
72	Vendtech-Sgi LLC Top NAICS codes 561612 Security Guards and Patrol Services	$63,950,584	0.3%	Rank history: #68 in FY2021, #63 in FY2023, #55 in FY2024 and #72 in FY2025; down 4 since FY2021.
73	Analogic Corporation Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$63,740,965	0.3%	Rank history: #38 in FY2021 and not on the FY2023–FY2025 lists; down 35 since FY2021.
74	Accenture Inc. Through Accenture Federal Services LLC Top NAICS codes 541612 Human Resources Consulting Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$61,226,270	0.3%	Rank history: not on the FY2021 list, #14 in FY2023 and not on the FY2024–FY2025 lists; new.
75	Disaster Solutions Alliance, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$59,563,064	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 360 since FY2021.
76	Advancing Resilience In Communities Top NAICS codes 541330 Engineering Services	$58,044,407	0.2%	Rank history: not on the FY2021 list, #64 in FY2023, #87 in FY2024 and not on the FY2025 list; up 283 since FY2021.
77	Global Precision Systems, LLC Top NAICS codes 561612 Security Guards and Patrol Services 561210 Facilities Support Services	$57,375,476	0.2%	Rank history: #79 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
78	Alethix, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$56,415,049	0.2%	Rank history: #87 in FY2021, #97 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
79	BAE Systems PLC 6 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information and Electronic Systems Integration Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$55,028,515	0.2%	Rank history: #95 in FY2021, #83 in FY2023, #99 in FY2024 and not on the FY2025 list; up 16 since FY2021.
80	Four LLC Top NAICS codes 541519 Other Computer Related Services	$54,638,862	0.2%	Rank history: #94 in FY2021, #73 in FY2023, #72 in FY2024 and not on the FY2025 list; up 14 since FY2021.
81	Applied Research Associates, Inc. Top NAICS codes 541330 Engineering Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 511210 Software Publishers	$54,549,962	0.2%	Rank history: not on the FY2021 list, #90 in FY2023 and not on the FY2024–FY2025 lists; up 94 since FY2021.
82	Fisher Sand & Gravel Co Top NAICS codes 236220 Commercial and Institutional Building Construction	$54,049,688	0.2%	Rank history: not on the FY2021 list, #10 in FY2023 and not on the FY2024–FY2025 lists; new.
83	Synergy Business Innovation & Solutions Inc. Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$53,105,088	0.2%	Rank history: #66 in FY2021, #86 in FY2023, not on the FY2024 list and #82 in FY2025; down 17 since FY2021.
84	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$52,997,399	0.2%	Rank history: not on the FY2021 list, #54 in FY2023, #50 in FY2024 and #50 in FY2025; new.
85	Itsi Gilbane Japan G.K. Through Gilbane Federal Top NAICS codes 236220 Commercial and Institutional Building Construction	$51,844,909	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 35 since FY2021.
86	Golden Svcs, LLC Top NAICS codes 561612 Security Guards and Patrol Services	$50,579,834	0.2%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
87	Motorola Inc 5 awardees, including Motorola Solutions, Inc. Top NAICS codes 541330 Engineering Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541519 Other Computer Related Services	$50,513,422	0.2%	Rank history: #45 in FY2021 and not on the FY2023–FY2025 lists; down 42 since FY2021.
88	ISS Action Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$49,422,037	0.2%	Rank history: not on the FY2021 list, #74 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2021.
89	Ami Expeditionary Healthcare (USA) LLC Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$49,212,617	0.2%	Rank history: not on the FY2021 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new.
90	Vanguard Inspection Services Top NAICS codes 541350 Building Inspection Services	$49,131,901	0.2%	Rank history: #35 in FY2021, #57 in FY2023, not on the FY2024 list and #85 in FY2025; down 55 since FY2021.
91	V. F. Corporation Through VF Imagewear, Inc. Top NAICS codes 424320 Men's and Boys' Clothing and Furnishings Merchant Wholesalers	$47,731,466	0.2%	Rank history: #37 in FY2021 and not on the FY2023–FY2025 lists; down 54 since FY2021.
92	Premier Trailer Leasing Inc. Through VF Imagewear, Inc. Top NAICS codes 424320 Men's and Boys' Clothing and Furnishings Merchant Wholesalers	$47,668,323	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
93	OSI Systems Inc. 3 awardees, including American Science & Engineering Inc., Rapiscan Systems Inc. and Rapiscan Laboratories, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 334517 Irradiation Apparatus Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$47,634,554	0.2%	Rank history: #15 in FY2021, #68 in FY2023 and not on the FY2024–FY2025 lists; down 78 since FY2021.
94	FCN, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$47,045,411	0.2%	Rank history: not on the FY2021 list, #59 in FY2023, #42 in FY2024 and #37 in FY2025; new.
95	Ahtna, Incorporated 3 awardees, including Ahtna Support & Training Services LLC, Ahtna Environmental, Inc. and Ahtna Global LLC Top NAICS codes 561612 Security Guards and Patrol Services 236220 Commercial and Institutional Building Construction 561210 Facilities Support Services	$46,640,196	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 13 since FY2021.
96	Starr II, A Joint Venture Top NAICS codes 541330 Engineering Services	$46,629,800	0.2%	Rank history: #57 in FY2021, #78 in FY2023, #91 in FY2024 and not on the FY2025 list; down 39 since FY2021.
97	CDA Incorporated Top NAICS codes 561612 Security Guards and Patrol Services	$46,377,788	0.2%	Rank history: #96 in FY2021, not on the FY2023 list, #79 in FY2024 and #61 in FY2025; down 1 since FY2021.
98	Miracle Systems LLC Top NAICS codes 541330 Engineering Services 541219 Other Accounting Services	$45,968,885	0.2%	Rank history: #97 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
99	Inserso Corporation Top NAICS codes 541512 Computer Systems Design Services 541513 Computer Facilities Management Services	$45,827,414	0.2%	Rank history: #90 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
100	Aviation Security Management LLC Top NAICS codes 561612 Security Guards and Patrol Services	$45,289,056	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 45 since FY2021.

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 $24.4 billion 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