Top 100 Defense Counterintelligence and Security Agency Contractors, FY2024

Name: Top 100 Defense Counterintelligence and Security Agency Contractors, FY2024
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

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

The top 10 won 66% of FY2024 Defense Counterintelligence and Security Agency contract dollars

Contract obligations: $1,138,327,823 Net of deobligations, by the Defense Counterintelligence and Security Agency and its offices
Contractors: 197 Parent companies with an obligation
Largest contractor: CACI International Inc. $187 million, 15.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CACI International Inc. 2 awardees, including Caci, Inc. - Federal Top NAICS codes 561611 Investigation and Personal Background Check Services	$187,278,832	15.3%	Rank history: #1 in FY2021, #3 in FY2022, #2 in FY2023 and #2 in FY2025; up 1 since FY2023.
2	Peraton Risk Decision Inc. Top NAICS codes 561611 Investigation and Personal Background Check Services	$117,027,630	9.6%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
3	Science Applications International Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services	$104,444,875	8.6%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #33 in FY2025; unchanged since FY2023.
4	HP Enterprise Services LLC 2 awardees, including Peraton Risk Decision Inc. Top NAICS codes 561611 Investigation and Personal Background Check Services	$94,607,020	7.8%	Rank history: #35 in FY2021, #2 in FY2022, #1 in FY2023 and not on the FY2025 list; down 3 since FY2023.
5	Arctic Slope Regional Corporation 3 awardees, including Asrc Federal Professional Services, LLC and Asrc Federal Cyber, LLC Top NAICS codes 561611 Investigation and Personal Background Check Services 541511 Custom Computer Programming Services	$83,784,812	6.9%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023 and #4 in FY2025; up 3 since FY2023.
6	Agile Decision Sciences, LLC Top NAICS codes 541513 Computer Facilities Management Services	$58,876,208	4.8%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and not on the FY2025 list; up 19 since FY2023.
7	Consortium Management Group, Inc.	$44,251,351	3.6%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
8	Kpmg LLP 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$39,937,768	3.3%	Rank history: #6 in FY2021, #5 in FY2022, #6 in FY2023 and #13 in FY2025; down 2 since FY2023.
9	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 513210 Software Publishers	$38,290,476	3.1%	Rank history: #10 in FY2021, #7 in FY2022, #4 in FY2023 and #5 in FY2025; down 5 since FY2023.
10	The Prospective Group, LLC Top NAICS codes 541330 Engineering Services	$31,530,098	2.6%	Rank history: not on the FY2021 list, #37 in FY2022, #14 in FY2023 and #21 in FY2025; up 4 since FY2023.
11	Global Connections To Employment, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$22,619,974	1.9%	Rank history: #15 in FY2021, #14 in FY2022, #23 in FY2023 and #30 in FY2025; up 12 since FY2023.
12	Cherokee Insights LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541690 Other Scientific and Technical Consulting Services	$22,385,080	1.8%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and #10 in FY2025; up 3 since FY2023.
13	Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$19,620,849	1.6%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
14	Echelon Services, LLC Top NAICS codes 541513 Computer Facilities Management Services 561990 All Other Support Services	$18,658,172	1.5%	Rank history: not on the FY2021 list, #6 in FY2022, #7 in FY2023 and #26 in FY2025; down 7 since FY2023.
15	Iworks Corp 2 awardees Top NAICS codes 561611 Investigation and Personal Background Check Services	$14,158,675	1.2%	Rank history: #11 in FY2021, #13 in FY2022, #18 in FY2023 and #8 in FY2025; up 3 since FY2023.
16	Salient Crgt, Inc. Top NAICS codes 541512 Computer Systems Design Services	$12,031,154	1.0%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
17	Team Carney, Inc. Top NAICS codes 611430 Professional and Management Development Training	$11,905,104	1.0%	Rank history: #27 in FY2021, #29 in FY2022, #24 in FY2023 and #15 in FY2025; up 7 since FY2023.
18	Verato, Inc. Top NAICS codes 561450 Credit Bureaus 541219 Other Accounting Services	$11,690,298	1.0%	Rank history: #8 in FY2021, #11 in FY2022, #10 in FY2023 and #70 in FY2025; down 8 since FY2023.
19	Salient Federal-Sgis Inc Top NAICS codes 541519 Other Computer Related Services	$11,292,906	0.9%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
20	Sierra Nevada Company, LLC Top NAICS codes 511210 Software Publishers	$11,279,917	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	Metis Celestar JV LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$11,091,654	0.9%	Rank history: #14 in FY2021, #12 in FY2022, #16 in FY2023 and #63 in FY2025; down 5 since FY2023.
22	A3 Consulting Services Inc. Through A3 Consulting LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$10,154,113	0.8%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
23	Minburn Technology Group, LLC Top NAICS codes 511210 Software Publishers	$10,101,344	0.8%	Rank history: #23 in FY2021, #24 in FY2022, #33 in FY2023 and #14 in FY2025; up 10 since FY2023.
24	Relx Inc. 2 awardees, including Lexisnexis Special Services Inc. Top NAICS codes 561450 Credit Bureaus 519290 Web Search Portals and All Other Information Services	$9,296,057	0.8%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
25	Rivertech LLC 2 awardees Top NAICS codes 561210 Facilities Support Services	$7,421,388	0.6%	Rank history: not on the FY2021 list, #35 in FY2022, #56 in FY2023 and not on the FY2025 list; up 31 since FY2023.
26	Cacg, LLC Top NAICS codes 541512 Computer Systems Design Services	$7,190,060	0.6%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and #40 in FY2025; up 13 since FY2023.
27	DDC It Services LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$7,183,546	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
28	Talu LLC Top NAICS codes 337127 Institutional Furniture Manufacturing	$7,026,194	0.6%	Rank history: not on the FY2021 list, #45 in FY2022, #79 in FY2023 and not on the FY2025 list; up 51 since FY2023.
29	Goldbelt Nighthawk, LLC Top NAICS codes 541519 Other Computer Related Services	$6,965,918	0.6%	Rank history: #30 in FY2021, #28 in FY2022, #52 in FY2023 and #58 in FY2025; up 23 since FY2023.
30	Palantir Technologies Inc. Top NAICS codes 513210 Software Publishers 511210 Software Publishers	$6,955,120	0.6%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and #16 in FY2025; up 33 since FY2023.
31	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$6,623,095	0.5%	Rank history: not on the FY2021 list, #21 in FY2022, #26 in FY2023 and #25 in FY2025; down 5 since FY2023.
32	Copper River Cyber Solutions, LLC Top NAICS codes 541618 Other Management Consulting Services	$6,450,152	0.5%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
33	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top NAICS codes 541330 Engineering Services	$6,029,230	0.5%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
34	Frontier Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,137,971	0.4%	Rank history: #24 in FY2021, #42 in FY2022, #37 in FY2023 and #19 in FY2025; up 3 since FY2023.
35	Dynanet Corporation Top NAICS codes 541511 Custom Computer Programming Services	$5,075,732	0.4%	Rank history: #13 in FY2021, #16 in FY2022, #20 in FY2023 and #38 in FY2025; down 15 since FY2023.
36	PCI Productions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,635,254	0.4%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
37	National Student Clearinghouse Top NAICS codes 519290 Web Search Portals and All Other Information Services	$4,410,115	0.4%	Rank history: #63 in FY2021, #27 in FY2022, #32 in FY2023 and #32 in FY2025; down 5 since FY2023.
38	International Business Machines Corporation Top NAICS codes 541511 Custom Computer Programming Services	$4,402,298	0.4%	Rank history: #25 in FY2021, #23 in FY2022, #31 in FY2023 and #24 in FY2025; down 7 since FY2023.
39	Arrowpoint Corporation Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$4,299,198	0.4%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and not on the FY2025 list; up 12 since FY2023.
40	Nana Regional Corporation Inc. Through Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$4,242,892	0.3%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
41	Govcio, LLC Top NAICS codes 541519 Other Computer Related Services	$4,213,106	0.3%	Rank history: not on the FY2021 list, #20 in FY2022, not on the FY2023 list and #37 in FY2025; returned.
42	Enlightened, Inc. Top NAICS codes 541512 Computer Systems Design Services	$4,118,272	0.3%	Rank history: #31 in FY2021, #31 in FY2022, #38 in FY2023 and #47 in FY2025; down 4 since FY2023.
43	Alaska Native Government Services LLC Through Copper River Cyber Solutions, LLC Top NAICS codes 541519 Other Computer Related Services 541618 Other Management Consulting Services	$4,074,526	0.3%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023 and not on the FY2025 list; down 30 since FY2023.
44	Intecon LLC Top NAICS codes 541330 Engineering Services	$3,851,832	0.3%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.
45	Creative It Solutions LLC Top NAICS codes 541330 Engineering Services	$3,746,411	0.3%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; new.
46	Intelligenesis LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,700,801	0.3%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and not on the FY2025 list; down 19 since FY2023.
47	Keystone Vocational Services Inc. Top NAICS codes 561499 All Other Business Support Services	$3,619,441	0.3%	Rank history: #33 in FY2021, #38 in FY2022, #40 in FY2023 and #45 in FY2025; down 7 since FY2023.
48	Manta Group LLC Top NAICS codes 541330 Engineering Services	$3,355,619	0.3%	Rank history: #36 in FY2021, #34 in FY2022, #41 in FY2023 and #39 in FY2025; down 7 since FY2023.
49	Bloomberg Finance LP Top NAICS codes 519190 All Other Information Services	$3,277,380	0.3%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
50	R3 Government Solutions, LLC Top NAICS codes 541612 Human Resources Consulting Services	$3,081,368	0.3%	Rank history: #47 in FY2021, #36 in FY2022, #42 in FY2023 and #43 in FY2025; down 8 since FY2023.
51	University of South Carolina Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,990,853	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	N2Ia Technologies LLC Top NAICS codes 541512 Computer Systems Design Services	$2,838,537	0.2%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
53	Geospatial and Cloud Analytics Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$2,814,566	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	SJ Tech LLC Top NAICS codes 541512 Computer Systems Design Services	$2,498,674	0.2%	Rank history: #26 in FY2021, #26 in FY2022, #35 in FY2023 and not on the FY2025 list; down 19 since FY2023.
55	Island Empire Technology Systems LLC Top NAICS codes 611430 Professional and Management Development Training	$2,352,379	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and #62 in FY2025; down 10 since FY2023.
56	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$2,316,227	0.2%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and #51 in FY2025; down 6 since FY2023.
57	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$2,075,365	0.2%	Rank history: not on the FY2021 list, #47 in FY2022, #60 in FY2023 and #90 in FY2025; up 3 since FY2023.
58	Celeen LLC Top NAICS codes 541330 Engineering Services	$1,954,030	0.2%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
59	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,922,218	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #76 in FY2025; up 11 since FY2023.
60	Center for Creative Leadership Top NAICS codes 611430 Professional and Management Development Training	$1,828,771	0.1%	Rank history: #61 in FY2021, #82 in FY2022, #57 in FY2023 and #65 in FY2025; down 3 since FY2023.
61	Strategic Alliance Business Group LLC Top NAICS codes 541330 Engineering Services	$1,812,728	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
62	Pherson Associates, LLC Top NAICS codes 611430 Professional and Management Development Training	$1,790,791	0.1%	Rank history: not on the FY2021 list, #77 in FY2022, #84 in FY2023 and #50 in FY2025; up 22 since FY2023.
63	Trussworks Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,733,923	0.1%	Rank history: not on the FY2021 list, #22 in FY2022, #48 in FY2023 and not on the FY2025 list; down 15 since FY2023.
64	Advanced Technology Systems Inc. Through Salient Crgt, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,604,353	0.1%	Rank history: #18 in FY2021, not on the FY2022 list, #21 in FY2023 and not on the FY2025 list; down 43 since FY2023.
65	At&T Inc. 5 awardees, including At&T Mobility National Accounts LLC, At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517110 Wired Telecommunications Carriers 517919 All Other Telecommunications	$1,577,405	0.1%	Rank history: #44 in FY2021, #52 in FY2022, #53 in FY2023 and #72 in FY2025; down 12 since FY2023.
66	OCT Consulting LLC Top NAICS codes 541330 Engineering Services	$1,536,672	0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
67	Rockwood Company LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,520,480	0.1%	Rank history: #42 in FY2021, #30 in FY2022, #46 in FY2023 and #54 in FY2025; down 21 since FY2023.
68	Feith Systems & Software, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,367,054	0.1%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2025; new.
69	Beat LLC Through Business Enabled Acquisition and Technology, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,365,569	0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #53 in FY2025; down 11 since FY2023.
70	Revolutional, LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,299,782	0.1%	Rank history: #37 in FY2021, #41 in FY2022, #47 in FY2023 and #48 in FY2025; down 23 since FY2023.
71	Techniko LLC Top NAICS codes 541330 Engineering Services	$1,117,989	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
72	G2 Global Solutions, LLC Top NAICS codes 541330 Engineering Services	$1,077,795	0.1%	Rank history: #73 in FY2021, #49 in FY2022, #59 in FY2023 and not on the FY2025 list; down 13 since FY2023.
73	NCS Pearson, Inc. Top NAICS codes 611710 Educational Support Services	$974,266	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	At&T Enterprises, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$952,529	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Hammer LGC Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$927,745	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Equifax Workforce Solutions LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$925,788	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
77	RTX Corporation 2 awardees, including Everfox LLC Top NAICS codes 541519 Other Computer Related Services 611420 Computer Training	$890,843	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #71 in FY2023 and not on the FY2025 list; down 6 since FY2023.
78	Four LLC Top NAICS codes 541519 Other Computer Related Services 513210 Software Publishers 511210 Software Publishers	$838,639	0.1%	Rank history: #60 in FY2021, #70 in FY2022, #73 in FY2023 and #98 in FY2025; down 5 since FY2023.
79	Fedresults, Inc. Top NAICS codes 511210 Software Publishers 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$713,284	0.1%	Rank history: #84 in FY2021, #75 in FY2022, #72 in FY2023 and not on the FY2025 list; down 7 since FY2023.
80	Purdy Group LLC Top NAICS codes 561210 Facilities Support Services	$688,260	0.1%	Rank history: #54 in FY2021, #99 in FY2022, #77 in FY2023 and #85 in FY2025; down 3 since FY2023.
81	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing	$622,670	0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #68 in FY2025; up 2 since FY2023.
82	Integrity Management Consulting, Inc. 2 awardees Top NAICS codes 541330 Engineering Services	$622,108	0.1%	Rank history: #96 in FY2021, #95 in FY2022, #76 in FY2023 and not on the FY2025 list; down 6 since FY2023.
83	Asrc Federal Cyber, LLC Top NAICS codes 541511 Custom Computer Programming Services	$606,540	<0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
84	Global Skills Exchange Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$604,420	<0.1%	Rank history: #49 in FY2021, #51 in FY2022, #64 in FY2023 and not on the FY2025 list; down 20 since FY2023.
85	Thomas & Reed LLC Top NAICS codes 621330 Offices of Mental Health Practitioners (except Physicians)	$565,753	<0.1%	Rank history: not on the FY2021 list, #73 in FY2022, not on the FY2023 list and #93 in FY2025; returned.
86	Miami Tribal Systems Integrators, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$547,689	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	National Association for Public Health Statistics and Information Systems, Inc. Top NAICS codes 813920 Professional Organizations	$538,669	<0.1%	Rank history: #81 in FY2021, #84 in FY2022, #89 in FY2023 and #87 in FY2025; up 2 since FY2023.
88	Network Runners Inc. Top NAICS codes 541330 Engineering Services	$462,913	<0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
89	Skillsoft (Us) LLC Top NAICS codes 511210 Software Publishers	$442,500	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$431,475	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and not on the FY2025 list; unchanged since FY2023.
91	Microsoft Corporation Top NAICS codes 541519 Other Computer Related Services	$427,104	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Nextstep Technology Inc. Top NAICS codes 541330 Engineering Services	$402,213	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #66 in FY2025; down 30 since FY2023.
93	Halvik LLC Top NAICS codes 541330 Engineering Services	$399,637	<0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; new.
94	Rei Systems, Inc. Top NAICS codes 541512 Computer Systems Design Services	$373,434	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$372,175	<0.1%	Rank history: #71 in FY2021, #71 in FY2022, #75 in FY2023 and not on the FY2025 list; down 20 since FY2023.
96	Spectrum Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$367,586	<0.1%	Rank history: #72 in FY2021, #98 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
97	Thomson Company Inc the Through West Publishing Corporation Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals 519290 Web Search Portals and All Other Information Services	$360,602	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Mantech Tsg-2 Joint Venture Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$359,023	<0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2025 list; down 29 since FY2023.
99	Idemia Identity & Security USA LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$350,503	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Goodwill Commercial Services, Inc. Top NAICS codes 561720 Janitorial Services	$347,844	<0.1%	Rank history: #45 in FY2021, #54 in FY2022, #55 in FY2023 and #96 in FY2025; down 45 since FY2023.

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100 of 197 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 $1.22 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.

Quick answers

Who were the top 10 Defense Counterintelligence and Security Agency contractors in FY2024?

1. CACI International Inc. ($187M), 2. Peraton Risk Decision Inc. ($117M), 3. Science Applications International Corporation ($104M), 4. HP Enterprise Services LLC ($94.6M), 5. Arctic Slope Regional Corporation ($83.8M), 6. Agile Decision Sciences, LLC ($58.9M), 7. Consortium Management Group, Inc. ($44.3M), 8. Kpmg LLP ($39.9M), 9. Carahsoft Technology Corp ($38.3M), 10. The Prospective Group, LLC ($31.5M).

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