Top 100 Department of Homeland Security Contractors, FY2024

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	$1,559,950,632	5.7%	Rank history: #7 in FY2021, #1 in FY2022, #1 in FY2023 and #16 in FY2025; unchanged since FY2023.
2	The GEO Group, Inc. 2 awardees, including B.i. Incorporated Top NAICS codes 561210 Facilities Support Services 561612 Security Guards and Patrol Services 922140 Correctional Institutions	$747,767,059	2.7%	Rank history: #3 in FY2021, #2 in FY2022, #3 in FY2023 and #4 in FY2025; up 1 since FY2023.
3	CACI International Inc. 7 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Caci Idt, LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541330 Engineering Services	$670,317,535	2.4%	Rank history: #4 in FY2021, #5 in FY2022, #2 in FY2023 and #3 in FY2025; down 1 since FY2023.
4	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	$528,553,253	1.9%	Rank history: #11 in FY2021, #8 in FY2022, #9 in FY2023 and #11 in FY2025; up 5 since FY2023.
5	General Dynamics Corporation 16 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Celerity Government Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 517919 All Other Telecommunications	$516,605,403	1.9%	Rank history: #2 in FY2021, #4 in FY2022, #8 in FY2023 and #10 in FY2025; up 3 since FY2023.
6	Leidos Holdings, Inc. 15 awardees, including Leidos, Inc. and QTC Medical Services Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 541512 Computer Systems Design Services 541519 Other Computer Related Services	$491,743,176	1.8%	Rank history: #1 in FY2021, #3 in FY2022, #4 in FY2023 and #6 in FY2025; down 2 since FY2023.
7	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 611430 Professional and Management Development Training	$429,626,859	1.6%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
8	CSI Aviation, Inc. Top NAICS codes 561599 All Other Travel Arrangement and Reservation Services 481211 Nonscheduled Chartered Passenger Air Transportation	$344,730,016	1.3%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #8 in FY2025; up 22 since FY2023.
9	Austal USA LLC Top NAICS codes 336611 Ship Building and Repairing	$309,624,080	1.1%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
10	Bccg A Joint Venture Top NAICS codes 236220 Commercial and Institutional Building Construction	$287,037,582	1.0%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
11	Loyal Source Government Services LLC 2 awardees Top NAICS codes 561320 Temporary Help Services	$281,519,322	1.0%	Rank history: #26 in FY2021, #36 in FY2022, #12 in FY2023 and #40 in FY2025; up 1 since FY2023.
12	Techflow, Inc. Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance 541511 Custom Computer Programming Services	$270,287,561	1.0%	Rank history: #20 in FY2021, #13 in FY2022, #18 in FY2023 and #21 in FY2025; up 6 since FY2023.
13	Securitas Electronic Security Inc. 2 awardees, including Paragon Systems Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths)	$268,209,461	1.0%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
14	Dell Technologies Inc. 2 awardees, including Dell Federal Systems L.P and Dell Marketing L.P. Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$254,289,436	0.9%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
15	Guidehouse Inc. 4 awardees, including Peraton Technology Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541219 Other Accounting Services	$251,965,222	0.9%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
16	Securitas AB 3 awardees, including Paragon Systems Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths)	$242,992,494	0.9%	Rank history: #5 in FY2021, #6 in FY2022, #7 in FY2023 and not on the FY2025 list; down 9 since FY2023.
17	The Mitre Corporation 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$220,980,223	0.8%	Rank history: #23 in FY2021, #20 in FY2022, #17 in FY2023 and #71 in FY2025; unchanged since FY2023.
18	Mvm, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$214,490,000	0.8%	Rank history: #28 in FY2021, #10 in FY2022, #15 in FY2023 and #31 in FY2025; down 3 since FY2023.
19	Science Applications International Corporation 4 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)	$209,511,875	0.8%	Rank history: #17 in FY2021, #11 in FY2022, #19 in FY2023 and #20 in FY2025; unchanged since FY2023.
20	Corecivic, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 922190 Other Justice, Public Order, and Safety Activities	$179,444,876	0.7%	Rank history: #27 in FY2021, #27 in FY2022, #28 in FY2023 and #15 in FY2025; up 8 since FY2023.
21	At&T Inc. 4 awardees, including At&T Enterprises, LLC, Att Mobility LLC and Directv, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517112 Wireless Telecommunications Carriers (except Satellite) 517312 Wireless Telecommunications Carriers (except Satellite)	$175,064,735	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
22	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services	$172,742,410	0.6%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
23	Amentum Services, Inc. 4 awardees, including PAE National Security Solutions LLC and Centra Technology, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation 541513 Computer Facilities Management Services 541330 Engineering Services	$167,090,728	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
24	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$165,582,097	0.6%	Rank history: #85 in FY2021, #42 in FY2022, #31 in FY2023 and #30 in FY2025; up 7 since FY2023.
25	LMI Consulting, LLC Top NAICS codes 541330 Engineering Services	$159,365,049	0.6%	Rank history: not on the FY2021 list, #43 in FY2022, not on the FY2023 list and #43 in FY2025; up 97 since FY2023.
26	Covenant Aviation Security LLC Top NAICS codes 561612 Security Guards and Patrol Services	$156,017,437	0.6%	Rank history: #30 in FY2021, #35 in FY2022, #36 in FY2023 and not on the FY2025 list; up 10 since FY2023.
27	Asgn Incorporated Through ECS Federal, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$145,299,775	0.5%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
28	ManTech International Corporation 4 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Unison Software Inc. Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services	$144,541,445	0.5%	Rank history: #21 in FY2021, #19 in FY2022, #23 in FY2023 and #35 in FY2025; down 5 since FY2023.
29	Lima Charlie, Inc. Top NAICS codes 531311 Residential Property Managers 531110 Lessors of Residential Buildings and Dwellings	$136,991,823	0.5%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 194 since FY2023.
30	Triple Canopy Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths)	$135,185,366	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 125 since FY2023.
31	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	$134,921,478	0.5%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023 and not on the FY2025 list; down 18 since FY2023.
32	Leidos, Inc. Top NAICS codes 541519 Other Computer Related Services 334517 Irradiation Apparatus Manufacturing	$134,592,538	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Fluor Corporation 3 awardees, including Fluor Federal Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$128,830,100	0.5%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and #24 in FY2025; up 4 since FY2023.
34	Caci Technologies LLC 3 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 561611 Investigation and Personal Background Check Services	$126,666,557	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	American Medical Response Inc. Top NAICS codes 621910 Ambulance Services	$125,919,956	0.5%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; new.
36	CGI Federal Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$125,522,970	0.5%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
37	International Business Machines Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$125,087,680	0.5%	Rank history: #24 in FY2021, #24 in FY2022, #44 in FY2023 and #29 in FY2025; up 7 since FY2023.
38	ITC Federal, LLC Top NAICS codes 561110 Office Administrative Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$123,383,648	0.4%	Rank history: #84 in FY2021, #53 in FY2022, #38 in FY2023 and #70 in FY2025; unchanged since FY2023.
39	Fisher Sand & Gravel Co Top NAICS codes 236220 Commercial and Institutional Building Construction	$120,680,000	0.4%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
40	Dev Technology Group Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$120,162,777	0.4%	Rank history: #49 in FY2021, #70 in FY2022, #46 in FY2023 and #32 in FY2025; up 6 since FY2023.
41	Dignari, LLC Top NAICS codes 541513 Computer Facilities Management Services	$115,949,129	0.4%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; up 12 since FY2023.
42	FCN, Inc. Top NAICS codes 541519 Other Computer Related Services	$114,496,344	0.4%	Rank history: not on the FY2021 list, #94 in FY2022, #59 in FY2023 and #37 in FY2025; up 17 since FY2023.
43	Workwear Outfitters, LLC Top NAICS codes 424320 Men's and Boys' Clothing and Furnishings Merchant Wholesalers	$112,454,445	0.4%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2025 list; down 3 since FY2023.
44	STG International, Inc. Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$111,784,016	0.4%	Rank history: #41 in FY2021, #41 in FY2022, #43 in FY2023 and not on the FY2025 list; down 1 since FY2023.
45	Kerberos International Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$106,805,532	0.4%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and #49 in FY2025; up 40 since FY2023.
46	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top NAICS codes 517911 Telecommunications Resellers 517121 Telecommunications Resellers	$104,329,445	0.4%	Rank history: #61 in FY2021, #61 in FY2022, #47 in FY2023 and not on the FY2025 list; up 1 since FY2023.
47	Cotton Commercial Usa, Inc. Top NAICS codes 561210 Facilities Support Services 493190 Other Warehousing and Storage	$101,047,837	0.4%	Rank history: #13 in FY2021, not on the FY2022–FY2023 lists and #58 in FY2025; up 182 since FY2023.
48	Eastern Shipbuilding Group, Inc. Top NAICS codes 336611 Ship Building and Repairing	$99,660,135	0.4%	Rank history: #6 in FY2021, #45 in FY2022, #27 in FY2023 and not on the FY2025 list; down 21 since FY2023.
49	Smiths Detection, Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 334516 Analytical Laboratory Instrument Manufacturing	$97,541,385	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services 337127 Institutional Furniture Manufacturing 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$90,409,342	0.3%	Rank history: not on the FY2021 list, #84 in FY2022, #54 in FY2023 and #50 in FY2025; up 4 since FY2023.
51	Lockheed Martin Corporation 11 awardees, including Sikorsky Aircraft Corporation and Lockheed Martin Logistic Services, Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 336411 Aircraft Manufacturing 541330 Engineering Services	$90,298,971	0.3%	Rank history: #12 in FY2021, #62 in FY2022, #35 in FY2023 and #84 in FY2025; down 16 since FY2023.
52	Dynamic Group, LLC Top NAICS codes 321991 Manufactured Home (Mobile Home) Manufacturing	$89,529,657	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Akima Global Services, LLC Top NAICS codes 561612 Security Guards and Patrol Services	$89,232,971	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 153 since FY2023.
54	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$88,167,521	0.3%	Rank history: #29 in FY2021, #21 in FY2022, #48 in FY2023 and #13 in FY2025; down 6 since FY2023.
55	Vendtech-Sgi LLC Top NAICS codes 561612 Security Guards and Patrol Services	$81,394,718	0.3%	Rank history: #68 in FY2021, #72 in FY2022, #63 in FY2023 and #72 in FY2025; up 8 since FY2023.
56	Panamerica Computers Inc. Top NAICS codes 541519 Other Computer Related Services 513210 Software Publishers	$81,001,978	0.3%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2025; new.
57	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services	$80,564,312	0.3%	Rank history: #64 in FY2021, #52 in FY2022, #62 in FY2023 and #77 in FY2025; up 5 since FY2023.
58	Anduril Industries Inc. Top NAICS codes 541512 Computer Systems Design Services	$75,458,500	0.3%	Rank history: not on the FY2021 list, #63 in FY2022, #61 in FY2023 and #41 in FY2025; up 3 since FY2023.
59	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 541511 Custom Computer Programming Services	$74,038,615	0.3%	Rank history: #88 in FY2021, #50 in FY2022, #71 in FY2023 and not on the FY2025 list; up 12 since FY2023.
60	Steampunk, Inc. Top NAICS codes 541512 Computer Systems Design Services	$73,852,026	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
61	Akira Technologies Inc. Top NAICS codes 541519 Other Computer Related Services	$71,954,620	0.3%	Rank history: #58 in FY2021, #48 in FY2022, #55 in FY2023 and not on the FY2025 list; down 6 since FY2023.
62	Paragon Professional Services LLC Top NAICS codes 561612 Security Guards and Patrol Services	$71,717,187	0.3%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and not on the FY2025 list; up 10 since FY2023.
63	The Rand Corporation Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$71,084,869	0.3%	Rank history: #63 in FY2021, #58 in FY2022, #52 in FY2023 and not on the FY2025 list; down 11 since FY2023.
64	Acuity International LLC 2 awardees, including Acuity Inc. Top NAICS codes 321991 Manufactured Home (Mobile Home) Manufacturing 541612 Human Resources Consulting Services 541511 Custom Computer Programming Services	$69,654,817	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 302 since FY2023.
65	Golder Europe Service Centre SRL 2 awardees, including WSP USA Services Inc. and WSP USA Solutions Inc. Top NAICS codes 541350 Building Inspection Services 541330 Engineering Services 541620 Environmental Consulting Services	$69,099,043	0.3%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
66	Centerra Group, LLC Top NAICS codes 561612 Security Guards and Patrol Services	$66,031,153	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Brillient Corporation Top NAICS codes 561210 Facilities Support Services	$65,871,064	0.2%	Rank history: #47 in FY2021, not on the FY2022 list, #77 in FY2023 and #78 in FY2025; up 10 since FY2023.
68	RTX Corporation 23 awardees, including Raytheon Company, Rockwell Collins, Inc. and Hamilton Sundstrand Corporation Top NAICS codes 541330 Engineering Services 488190 Other Support Activities for Air Transportation 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$63,830,226	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Ekagra Partners LLC Top NAICS codes 541512 Computer Systems Design Services	$63,494,752	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; up 57 since FY2023.
70	Motorola Solutions, Inc. Top NAICS codes 541330 Engineering Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 811210 Electronic and Precision Equipment Repair and Maintenance	$63,403,969	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Trailboss Enterprises, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 561210 Facilities Support Services	$61,543,710	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 67 since FY2023.
72	Four LLC Top NAICS codes 541519 Other Computer Related Services 513210 Software Publishers	$59,699,245	0.2%	Rank history: #94 in FY2021, #80 in FY2022, #73 in FY2023 and not on the FY2025 list; up 1 since FY2023.
73	Northrop Grumman Corporation 8 awardees, including Northrop Grumman Systems Corporation and Remotec, Inc. Top NAICS codes 336411 Aircraft Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 488190 Other Support Activities for Air Transportation	$59,148,024	0.2%	Rank history: #34 in FY2021, #66 in FY2022, #70 in FY2023 and not on the FY2025 list; down 3 since FY2023.
74	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$57,223,707	0.2%	Rank history: #50 in FY2021, #47 in FY2022, #42 in FY2023 and #81 in FY2025; down 32 since FY2023.
75	Parliament LLC Top NAICS codes 531311 Residential Property Managers 531110 Lessors of Residential Buildings and Dwellings 611710 Educational Support Services	$57,138,379	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Miracle Systems LLC Top NAICS codes 541330 Engineering Services 541219 Other Accounting Services	$56,357,162	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #88 in FY2025; up 5 since FY2023.
77	Aver LLC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$55,766,634	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 21 since FY2023.
78	Mantech Advanced Systems International, Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services	$55,324,155	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	CDA Incorporated Top NAICS codes 561612 Security Guards and Patrol Services	$55,029,165	0.2%	Rank history: #96 in FY2021, #97 in FY2022, not on the FY2023 list and #61 in FY2025; up 66 since FY2023.
80	Ranger Defense, Incorporated Through Ranger Land Systems, Inc. Top NAICS codes 561210 Facilities Support Services	$53,591,463	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Noblis, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services 541519 Other Computer Related Services	$53,549,627	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 27 since FY2023.
82	Tribalco LLC Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541519 Other Computer Related Services	$53,445,738	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #91 in FY2025; down 3 since FY2023.
83	Inserso Corporation Top NAICS codes 541512 Computer Systems Design Services	$53,133,018	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2025 list; up 11 since FY2023.
84	Bradley Technologies Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$52,940,632	0.2%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; up 94 since FY2023.
85	Verizon 3 awardees, including Verizon Business Network Services LLC, Cellco Partnership and MCI Communications Services LLC Top NAICS codes 517112 Wireless Telecommunications Carriers (except Satellite) 517110 Wired Telecommunications Carriers 541519 Other Computer Related Services	$52,865,708	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Birdon America Inc. Top NAICS codes 336611 Ship Building and Repairing	$52,583,298	0.2%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and #22 in FY2025; down 11 since FY2023.
87	Advancing Resilience In Communities Top NAICS codes 541330 Engineering Services	$52,520,350	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #64 in FY2023 and not on the FY2025 list; down 23 since FY2023.
88	Metaphase Consulting LLC Top NAICS codes 541330 Engineering Services 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$52,379,636	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 29 since FY2023.
89	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 561210 Facilities Support Services	$50,678,268	0.2%	Rank history: #25 in FY2021, #32 in FY2022, #32 in FY2023 and not on the FY2025 list; down 57 since FY2023.
90	Knight Point Systems, LLC Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$50,353,949	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Starr II, A Joint Venture Top NAICS codes 541330 Engineering Services	$50,325,307	0.2%	Rank history: #57 in FY2021, #96 in FY2022, #78 in FY2023 and not on the FY2025 list; down 13 since FY2023.
92	DV United LLC Top NAICS codes 541512 Computer Systems Design Services	$49,993,952	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 9 since FY2023.
93	Akima Infrastructure Protection LLC Top NAICS codes 561612 Security Guards and Patrol Services	$49,661,470	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 46 since FY2023.
94	Itcon Services LLC Top NAICS codes 541519 Other Computer Related Services	$49,624,567	0.2%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
95	Leidos Security Detection & Automation, Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 541330 Engineering Services 334519 Other Measuring and Controlling Device Manufacturing	$48,239,550	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	General Atomics Aeronautical Systems, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation	$48,230,371	0.2%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
97	AECOM Technical Services, Inc. Top NAICS codes 541330 Engineering Services 541310 Architectural Services	$47,997,706	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Rapiscan Systems Inc 2 awardees, including Rapiscan Government Services Inc. Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance 334517 Irradiation Apparatus Manufacturing 541330 Engineering Services	$47,666,750	0.2%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
99	BAE Systems PLC 4 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 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$47,633,206	0.2%	Rank history: #95 in FY2021, #79 in FY2022, #83 in FY2023 and not on the FY2025 list; down 16 since FY2023.
100	Alpha Omega Integration LLC Top NAICS codes 541512 Computer Systems Design Services	$47,472,362	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 23 since FY2023.

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 $27.5 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 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.

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