Top 100 Department of Homeland Security Contractors, FY2023

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	$1,120,679,341	4.1%	Rank history: #7 in FY2021, #1 in FY2022, #1 in FY2024 and #16 in FY2025; unchanged since FY2022.
2	CACI International Inc. 8 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Charon Technologies LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541330 Engineering Services	$779,925,184	2.8%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2024 and #3 in FY2025; up 3 since FY2022.
3	The GEO Group, Inc. 4 awardees, including B.i. Incorporated Top NAICS codes 561210 Facilities Support Services 561612 Security Guards and Patrol Services 922140 Correctional Institutions	$759,451,388	2.8%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2024 and #4 in FY2025; down 1 since FY2022.
4	Leidos Holdings, Inc. 17 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc. Top NAICS codes 541519 Other Computer Related Services 811219 Other Electronic and Precision Equipment Repair and Maintenance 541512 Computer Systems Design Services	$674,161,994	2.5%	Rank history: #1 in FY2021, #3 in FY2022, #6 in FY2024 and #6 in FY2025; down 1 since FY2022.
5	Barnard Spencer Joint Venture Top NAICS codes 236220 Commercial and Institutional Building Construction	$628,001,744	2.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #5 in FY2025; new.
6	Slsco, Ltd. Top NAICS codes 236220 Commercial and Institutional Building Construction	$529,072,000	1.9%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #59 in FY2025; new.
7	Securitas AB 3 awardees, including Paragon Systems Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths)	$519,754,037	1.9%	Rank history: #5 in FY2021, #6 in FY2022, #16 in FY2024 and not on the FY2025 list; down 1 since FY2022.
8	General Dynamics Corporation 14 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	$479,603,428	1.7%	Rank history: #2 in FY2021, #4 in FY2022, #5 in FY2024 and #10 in FY2025; down 4 since FY2022.
9	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541511 Custom Computer Programming Services	$451,732,174	1.6%	Rank history: #11 in FY2021, #8 in FY2022, #4 in FY2024 and #11 in FY2025; down 1 since FY2022.
10	Fisher Sand & Gravel Co 2 awardees Top NAICS codes 236220 Commercial and Institutional Building Construction	$282,563,566	1.0%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2024–FY2025 lists; up 72 since FY2022.
11	HP Enterprise Services LLC 8 awardees, including Peraton Technology Services Inc., Peraton Enterprise Solutions LLC and Peraton Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541512 Computer Systems Design Services 811212 Computer and Office Machine Repair and Maintenance	$267,207,540	1.0%	Rank history: #36 in FY2021, #26 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
12	Loyal Source Government Services LLC Top NAICS codes 561320 Temporary Help Services 621999 All Other Miscellaneous Ambulatory Health Care Services	$266,550,499	1.0%	Rank history: #26 in FY2021, #36 in FY2022, #11 in FY2024 and #40 in FY2025; up 24 since FY2022.
13	Omniplex World Services Corp 2 awardees, including Triple Canopy Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths) 561611 Investigation and Personal Background Check Services	$265,350,018	1.0%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and not on the FY2025 list; up 406 since FY2022.
14	Accenture Inc. Through Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services 541612 Human Resources Consulting Services 541519 Other Computer Related Services	$254,124,793	0.9%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2024–FY2025 lists; up 60 since FY2022.
15	Mvm, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$234,834,275	0.9%	Rank history: #28 in FY2021, #10 in FY2022, #18 in FY2024 and #31 in FY2025; down 5 since FY2022.
16	Dell Federal Systems L.P. 3 awardees, including Dell Marketing L.P. Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$225,256,257	0.8%	Rank history: #19 in FY2021, #7 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
17	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541720 Research and Development in the Social Sciences and Humanities	$223,007,388	0.8%	Rank history: #23 in FY2021, #20 in FY2022, #17 in FY2024 and #71 in FY2025; up 3 since FY2022.
18	Techflow, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 541511 Custom Computer Programming Services	$219,780,751	0.8%	Rank history: #20 in FY2021, #13 in FY2022, #12 in FY2024 and #21 in FY2025; down 5 since FY2022.
19	Science Applications International Corporation 5 awardees, including Forfeiture Support 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)	$204,123,104	0.7%	Rank history: #17 in FY2021, #11 in FY2022, #19 in FY2024 and #20 in FY2025; down 8 since FY2022.
20	Deloitte LLP 3 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541519 Other Computer Related Services	$203,106,205	0.7%	Rank history: #10 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
21	CGI Technologies and Solutions Inc. 2 awardees, including CGI Federal Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 511210 Software Publishers	$202,253,352	0.7%	Rank history: #55 in FY2021, #39 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
22	Amentum Services, Inc. 2 awardees, including Dyncorp International LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 541513 Computer Facilities Management Services	$188,005,402	0.7%	Rank history: not on the FY2021 list, #25 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
23	Mantech International Corporation 3 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	$180,858,351	0.7%	Rank history: #21 in FY2021, #19 in FY2022, #28 in FY2024 and #35 in FY2025; down 4 since FY2022.
24	Ranger Land Systems, Inc. Top NAICS codes 561210 Facilities Support Services	$180,038,843	0.7%	Rank history: not on the FY2021 list, #46 in FY2022 and not on the FY2024–FY2025 lists; up 22 since FY2022.
25	Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541612 Human Resources Consulting Services	$165,154,690	0.6%	Rank history: not on the FY2021 list, #31 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
26	At&T Inc. 9 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)	$163,827,838	0.6%	Rank history: #60 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
27	Eastern Shipbuilding Group, Inc. Top NAICS codes 336611 Ship Building and Repairing	$161,292,388	0.6%	Rank history: #6 in FY2021, #45 in FY2022, #48 in FY2024 and not on the FY2025 list; up 18 since FY2022.
28	Corecivic, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 922190 Other Justice, Public Order, and Safety Activities 423210 Furniture Merchant Wholesalers	$159,578,133	0.6%	Rank history: #27 in FY2021, #27 in FY2022, #20 in FY2024 and #15 in FY2025; down 1 since FY2022.
29	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 333998 All Other Miscellaneous General Purpose Machinery Manufacturing 333996 Fluid Power Pump and Motor Manufacturing	$158,232,329	0.6%	Rank history: #14 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
30	CSI Aviation, Inc. Top NAICS codes 561599 All Other Travel Arrangement and Reservation Services 481211 Nonscheduled Chartered Passenger Air Transportation	$151,180,136	0.6%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2024 and #8 in FY2025; new.
31	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$147,679,252	0.5%	Rank history: #85 in FY2021, #42 in FY2022, #24 in FY2024 and #30 in FY2025; up 11 since FY2022.
32	Nana Regional Corporation Inc 4 awardees, including Akima Global Services, LLC, Affigent, LLC and Lynxnet, LLC Top NAICS codes 561612 Security Guards and Patrol Services 541519 Other Computer Related Services 541512 Computer Systems Design Services	$142,674,148	0.5%	Rank history: #25 in FY2021, #32 in FY2022, #89 in FY2024 and not on the FY2025 list; unchanged since FY2022.
33	Guidehouse Inc. 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services 541219 Other Accounting Services	$141,320,928	0.5%	Rank history: #59 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
34	On Assignment, Inc. Through ECS Federal, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$136,359,711	0.5%	Rank history: #39 in FY2021, #30 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
35	Lockheed Martin Corporation 9 awardees, including Sikorsky Aircraft Corporation Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 336411 Aircraft Manufacturing 541330 Engineering Services	$135,005,511	0.5%	Rank history: #12 in FY2021, #62 in FY2022, #51 in FY2024 and #84 in FY2025; up 27 since FY2022.
36	Covenant Aviation Security LLC Top NAICS codes 561612 Security Guards and Patrol Services	$134,211,436	0.5%	Rank history: #30 in FY2021, #35 in FY2022, #26 in FY2024 and not on the FY2025 list; down 1 since FY2022.
37	Fluor Corporation 2 awardees, including Fluor Enterprises, Inc. and Fluor Federal Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$127,143,483	0.5%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2024 and #24 in FY2025; new.
38	ITC Federal, LLC Top NAICS codes 561110 Office Administrative Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$123,843,442	0.5%	Rank history: #84 in FY2021, #53 in FY2022, #38 in FY2024 and #70 in FY2025; up 15 since FY2022.
39	The Dewberry Companies LC 2 awardees, including Dewberry Engineers Inc. and Dewberry Consultants LLC Top NAICS codes 561210 Facilities Support Services 541310 Architectural Services	$120,501,391	0.4%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
40	Workwear Outfitters, LLC Top NAICS codes 424320 Men's and Boys' Clothing and Furnishings Merchant Wholesalers 315210 Cut and Sew Apparel Contractors	$116,263,282	0.4%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and not on the FY2025 list; up 295 since FY2022.
41	Classic Air Charter Inc. Top NAICS codes 481219 Other Nonscheduled Air Transportation	$111,871,806	0.4%	Rank history: #33 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; down 26 since FY2022.
42	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services	$107,874,066	0.4%	Rank history: #50 in FY2021, #47 in FY2022, #74 in FY2024 and #81 in FY2025; up 5 since FY2022.
43	STG International, Inc. Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$107,008,597	0.4%	Rank history: #41 in FY2021, #41 in FY2022, #44 in FY2024 and not on the FY2025 list; down 2 since FY2022.
44	International Business Machines Corporation 3 awardees Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$106,950,903	0.4%	Rank history: #24 in FY2021, #24 in FY2022, #37 in FY2024 and #29 in FY2025; down 20 since FY2022.
45	Gilbane Federal Top NAICS codes 236220 Commercial and Institutional Building Construction	$106,751,788	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Dev Technology Group Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$100,800,309	0.4%	Rank history: #49 in FY2021, #70 in FY2022, #40 in FY2024 and #32 in FY2025; up 24 since FY2022.
47	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top NAICS codes 517911 Telecommunications Resellers	$92,413,395	0.3%	Rank history: #61 in FY2021, #61 in FY2022, #46 in FY2024 and not on the FY2025 list; up 14 since FY2022.
48	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$91,667,087	0.3%	Rank history: #29 in FY2021, #21 in FY2022, #54 in FY2024 and #13 in FY2025; down 27 since FY2022.
49	Smiths Group PLC 2 awardees, including Smiths Detection Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334517 Irradiation Apparatus Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance	$90,892,514	0.3%	Rank history: #32 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
50	The Compass PTS JV Top NAICS codes 541330 Engineering Services	$88,810,048	0.3%	Rank history: #42 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 53 since FY2022.
51	Panamerica Computers, Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$85,696,210	0.3%	Rank history: #69 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
52	The Rand Corporation Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$85,589,048	0.3%	Rank history: #63 in FY2021, #58 in FY2022, #63 in FY2024 and not on the FY2025 list; up 6 since FY2022.
53	Dignari, LLC Top NAICS codes 541513 Computer Facilities Management Services	$84,465,053	0.3%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2024 and not on the FY2025 list; up 51 since FY2022.
54	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$83,599,153	0.3%	Rank history: not on the FY2021 list, #84 in FY2022, #50 in FY2024 and #50 in FY2025; up 30 since FY2022.
55	Akira Technologies Inc. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$83,558,785	0.3%	Rank history: #58 in FY2021, #48 in FY2022, #61 in FY2024 and not on the FY2025 list; down 7 since FY2022.
56	RTX Corporation 30 awardees, including Rockwell Collins, Inc., Raytheon Company and RTX BBN Technologies, Inc. Top NAICS codes 541330 Engineering Services 488190 Other Support Activities for Air Transportation 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$83,027,729	0.3%	Rank history: #22 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
57	Vanguard Inspection Services Top NAICS codes 541350 Building Inspection Services	$79,214,960	0.3%	Rank history: #35 in FY2021, #90 in FY2022, not on the FY2024 list and #85 in FY2025; up 33 since FY2022.
58	Sev1Tech, LLC Top NAICS codes 541513 Computer Facilities Management Services 541330 Engineering Services	$78,889,106	0.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #96 in FY2025; up 84 since FY2022.
59	FCN, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$78,455,460	0.3%	Rank history: not on the FY2021 list, #94 in FY2022, #42 in FY2024 and #37 in FY2025; up 35 since FY2022.
60	Arctic Slope Regional Corporation 4 awardees, including Asrc Federal Field Services, LLC, Asrc Federal Data Network Technologies, LLC and Netcentric Technology, LLC Top NAICS codes 561210 Facilities Support Services 541512 Computer Systems Design Services 541330 Engineering Services	$77,397,110	0.3%	Rank history: #89 in FY2021, #67 in FY2022, not on the FY2024 list and #74 in FY2025; up 7 since FY2022.
61	Anduril Industries Inc. Top NAICS codes 541512 Computer Systems Design Services	$75,070,074	0.3%	Rank history: not on the FY2021 list, #63 in FY2022, #58 in FY2024 and #41 in FY2025; up 2 since FY2022.
62	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services 513210 Software Publishers	$74,278,359	0.3%	Rank history: #64 in FY2021, #52 in FY2022, #57 in FY2024 and #77 in FY2025; down 10 since FY2022.
63	Vendtech-Sgi LLC Top NAICS codes 561612 Security Guards and Patrol Services	$72,697,514	0.3%	Rank history: #68 in FY2021, #72 in FY2022, #55 in FY2024 and #72 in FY2025; up 9 since FY2022.
64	Advancing Resilience In Communities Top NAICS codes 541330 Engineering Services	$72,581,111	0.3%	Rank history: not on the FY2021 list, #76 in FY2022, #87 in FY2024 and not on the FY2025 list; up 12 since FY2022.
65	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation	$72,183,409	0.3%	Rank history: #53 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
66	Anacapa Micro Products Inc Top NAICS codes 541519 Other Computer Related Services	$69,415,402	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 117 since FY2022.
67	MLU Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$69,241,696	0.3%	Rank history: not on the FY2021 list, #34 in FY2022, not on the FY2024 list and #75 in FY2025; down 33 since FY2022.
68	OSI Systems Inc. 4 awardees, including American Science & Engineering Inc., Rapiscan Systems Inc. and Rapiscan Government Services 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)	$69,066,828	0.3%	Rank history: #15 in FY2021, #93 in FY2022 and not on the FY2024–FY2025 lists; up 25 since FY2022.
69	Strategic Enterprise Solutions Inc. Through Steampunk, Inc. Top NAICS codes 541512 Computer Systems Design Services	$67,586,999	0.2%	Rank history: #86 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
70	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corporation and Remotec, Inc. Top NAICS codes 336411 Aircraft Manufacturing 511210 Software Publishers 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$67,492,888	0.2%	Rank history: #34 in FY2021, #66 in FY2022, #73 in FY2024 and not on the FY2025 list; down 4 since FY2022.
71	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$67,334,474	0.2%	Rank history: #88 in FY2021, #50 in FY2022, #59 in FY2024 and not on the FY2025 list; down 21 since FY2022.
72	Paragon Professional Services LLC Top NAICS codes 561612 Security Guards and Patrol Services	$67,040,233	0.2%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and not on the FY2025 list; new.
73	Four LLC Top NAICS codes 541519 Other Computer Related Services	$66,970,873	0.2%	Rank history: #94 in FY2021, #80 in FY2022, #72 in FY2024 and not on the FY2025 list; up 7 since FY2022.
74	ISS Action Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$66,117,818	0.2%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; up 14 since FY2022.
75	Birdon America Inc. Top NAICS codes 336611 Ship Building and Repairing	$63,958,568	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2024 and #22 in FY2025; up 258 since FY2022.
76	Reli Group Inc Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$63,395,369	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	Brillient Corporation Top NAICS codes 561210 Facilities Support Services	$63,231,880	0.2%	Rank history: #47 in FY2021, not on the FY2022 list, #67 in FY2024 and #78 in FY2025; returned.
78	Starr II, A Joint Venture Top NAICS codes 541330 Engineering Services	$61,129,769	0.2%	Rank history: #57 in FY2021, #96 in FY2022, #91 in FY2024 and not on the FY2025 list; up 18 since FY2022.
79	Tribalco LLC Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541519 Other Computer Related Services	$61,012,194	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and #91 in FY2025; new.
80	Universal Protection GP, LLC Through Universal Protection Service, Limited Partnership Top NAICS codes 561612 Security Guards and Patrol Services	$60,692,808	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 159 since FY2022.
81	Miracle Systems LLC Top NAICS codes 541330 Engineering Services 541219 Other Accounting Services	$56,794,585	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and #88 in FY2025; new.
82	Ami Expeditionary Healthcare (USA) LLC Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$55,237,016	0.2%	Rank history: not on the FY2021 list, #89 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
83	BAE Systems PLC 5 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 541512 Computer Systems Design Services 541330 Engineering Services	$55,076,472	0.2%	Rank history: #95 in FY2021, #79 in FY2022, #99 in FY2024 and not on the FY2025 list; down 4 since FY2022.
84	G4S Holding One Inc. Through G4S Secure Solutions (USA) Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$54,892,885	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 32 since FY2022.
85	Kerberos International Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$54,123,981	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and #49 in FY2025; new.
86	Synergy Business Innovation & Solutions Inc. Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$53,496,361	0.2%	Rank history: #66 in FY2021, #83 in FY2022, not on the FY2024 list and #82 in FY2025; down 3 since FY2022.
87	ACE Info Solutions LLC Through Guidehouse Digital LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541330 Engineering Services	$53,445,644	0.2%	Rank history: #78 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
88	Fleetcor Technologies Inc. Through Corporate Lodging Consultants, Inc. Top NAICS codes 561599 All Other Travel Arrangement and Reservation Services	$53,343,185	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 195 since FY2022.
89	Rq-Aecom 2 JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$52,888,625	0.2%	Rank history: #40 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; down 51 since FY2022.
90	Applied Research Associates, Inc. Top NAICS codes 541330 Engineering Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541519 Other Computer Related Services	$52,510,145	0.2%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
91	Airbus Americas Inc. 3 awardees, including Airbus Helicopters, Inc., Airbus US Space & Defense Inc. and Airbus DS Military Aircraft, Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541330 Engineering Services 488190 Other Support Activities for Air Transportation	$52,416,950	0.2%	Rank history: #98 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
92	The Haskell Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$52,091,918	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Rolls-Royce Military Aero Engines Ltd 6 awardees, including Rolls-Royce Solutions America Inc., Rolls-Royce Corporation and Rolls-Royce Marine North America Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation 333618 Other Engine Equipment Manufacturing 336611 Ship Building and Repairing	$50,683,733	0.2%	Rank history: #62 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 60 since FY2022.
94	Inserso Corporation Top NAICS codes 541512 Computer Systems Design Services	$50,251,564	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2024 and not on the FY2025 list; new.
95	FS Partners, LLP Top NAICS codes 541519 Other Computer Related Services 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing 335931 Current-Carrying Wiring Device Manufacturing	$49,761,642	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 42 since FY2022.
96	Triple Canopy Inc. 2 awardees, including Centerra Group, LLC and Academi Training Center LLC Top NAICS codes 561612 Security Guards and Patrol Services 611699 All Other Miscellaneous Schools and Instruction	$48,317,504	0.2%	Rank history: #9 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 87 since FY2022.
97	Alethix, LLC Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$47,999,166	0.2%	Rank history: #87 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
98	Aver LLC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$47,969,651	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and not on the FY2025 list; up 42 since FY2022.
99	Borealis Enterprises LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$47,717,439	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Idemia Identity & Security USA LLC 2 awardees, including Idemia National Security Solutions LLC Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541611 Administrative Management and General Management Consulting Services 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$47,257,791	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 64 since FY2022.

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 $27.4 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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