Top 100 Contractors in NAICS 561612: Security Guards and Patrol Services, FY2025

Name: Top 100 Contractors in NAICS 561612: Security Guards and Patrol Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 46% of FY2025 NAICS 561612 contract dollars

Contract obligations: $5,997,031,572 Net of deobligations, by contracts coded NAICS 561612
Contractors: 556 Parent companies with an obligation
Largest contractor: Securitas Electronic Security Inc. $542 million, 8.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Securitas Electronic Security Inc. Through Paragon Systems Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$541,859,046	8.5%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; up 3 since FY2024.
2	Metropolitan Security Services, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) GSA (General Services Administration)	$527,525,607	8.3%	Rank history: #4 in FY2021, #5 in FY2022, #4 in FY2023 and #1 in FY2024; down 1 since FY2024.
3	Triple Canopy Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) DOS (Department of State)	$348,756,956	5.5%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #6 in FY2024; up 3 since FY2024.
4	The GEO Group, Inc. 2 awardees, including GEO Transport, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$347,668,166	5.5%	Rank history: #7 in FY2021, #4 in FY2022, #5 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	Corecivic, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$315,397,445	5.0%	Rank history: #9 in FY2021, #7 in FY2022, #7 in FY2023 and #8 in FY2024; up 3 since FY2024.
6	Inter-CON Security Systems Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) GAO (Government Accountability Office)	$184,085,997	2.9%	Rank history: #5 in FY2021, #9 in FY2022, #9 in FY2023 and #10 in FY2024; up 4 since FY2024.
7	BC Partners LLP Through Gardaworld Federal Services LLC Top agencies DOS (Department of State) Army (Department of the Army) Navy (Department of the Navy)	$173,519,460	2.7%	Rank history: not on the FY2021 list, #40 in FY2022, #13 in FY2023 and #9 in FY2024; up 2 since FY2024.
8	Mvm, Inc. Top agencies DHS (Department of Homeland Security)	$172,732,300	2.7%	Rank history: #10 in FY2021, #3 in FY2022, #6 in FY2023 and #7 in FY2024; down 1 since FY2024.
9	Akima Infrastructure Protection LLC Top agencies DHS (Department of Homeland Security)	$170,461,860	2.7%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and #24 in FY2024; up 15 since FY2024.
10	Covenant Aviation Security, LLC 2 awardees Top agencies DHS (Department of Homeland Security)	$165,336,385	2.6%	Rank history: #12 in FY2021, #11 in FY2022, #10 in FY2023 and #11 in FY2024; up 1 since FY2024.
11	Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services) Army (Department of the Army)	$148,706,469	2.3%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; up 4 since FY2024.
12	Pond Security Service GMBH Top agencies Army (Department of the Army) DOS (Department of State) DECA (Defense Commissary Agency)	$128,652,490	2.0%	Rank history: #11 in FY2021, #10 in FY2022, #11 in FY2023 and #13 in FY2024; up 1 since FY2024.
13	Kerberos International Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$122,000,938	1.9%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and #14 in FY2024; up 1 since FY2024.
14	Centerra Group, LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) DOE (Department of Energy) DHS (Department of Homeland Security)	$118,753,691	1.9%	Rank history: #28 in FY2021, #90 in FY2022, not on the FY2023 list and #12 in FY2024; down 2 since FY2024.
15	Universal Protection Service, Limited Partnership Top agencies DHS (Department of Homeland Security) Smithsonian (Smithsonian Institution) DOS (Department of State)	$117,611,473	1.8%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2024; up 11 since FY2024.
16	Paragon Professional Services LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$115,196,524	1.8%	Rank history: not on the FY2021 list, #86 in FY2022, #17 in FY2023 and #17 in FY2024; up 1 since FY2024.
17	Bradley Technologies Inc. Top agencies DHS (Department of Homeland Security) CSOSA (Court Services and Offender Supervision Agency) Army (Department of the Army)	$89,516,529	1.4%	Rank history: #82 in FY2021, #74 in FY2022, #30 in FY2023 and #19 in FY2024; up 2 since FY2024.
18	G4S Secure Solutions (USA) Inc. Top agencies DHS (Department of Homeland Security)	$89,344,003	1.4%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; up 9 since FY2024.
19	CDA Incorporated Top agencies DHS (Department of Homeland Security)	$89,124,916	1.4%	Rank history: #22 in FY2021, #25 in FY2022, #35 in FY2023 and #20 in FY2024; up 1 since FY2024.
20	Vendtech-Sgi LLC Top agencies DHS (Department of Homeland Security)	$77,256,082	1.2%	Rank history: #15 in FY2021, #17 in FY2022, #19 in FY2023 and #18 in FY2024; down 2 since FY2024.
21	Nana Regional Corporation, Inc. 3 awardees, including Akima Global Services, LLC and Akima Centerra Integrated Services LLC Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$63,254,576	1.0%	Rank history: #13 in FY2021, #12 in FY2022, #14 in FY2023 and #22 in FY2024; up 1 since FY2024.
22	Akima Global Services, LLC Top agencies DHS (Department of Homeland Security)	$58,865,930	0.9%	Rank history: not on the FY2021 list, #32 in FY2022, #41 in FY2023 and #16 in FY2024; down 6 since FY2024.
23	Nve, Inc. Top agencies DOS (Department of State) Army (Department of the Army)	$51,974,488	0.8%	Rank history: #37 in FY2021, #24 in FY2022, #33 in FY2023 and #91 in FY2024; up 68 since FY2024.
24	Simmons & Golden Security LLC Top agencies DHS (Department of Homeland Security) DOE (Department of Energy)	$51,567,184	0.8%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and #54 in FY2024; up 30 since FY2024.
25	Diversified Protection Corp Top agencies DHS (Department of Homeland Security) DOL (Department of Labor) EPA (Environmental Protection Agency)	$50,879,780	0.8%	Rank history: #16 in FY2021, #16 in FY2022, #20 in FY2023 and #30 in FY2024; up 5 since FY2024.
26	Management & Training Corporation Top agencies DHS (Department of Homeland Security)	$50,621,250	0.8%	Rank history: #29 in FY2021, #28 in FY2022, #26 in FY2023 and #28 in FY2024; up 2 since FY2024.
27	Trailboss Enterprises, Inc. Top agencies DHS (Department of Homeland Security)	$48,527,727	0.8%	Rank history: #77 in FY2021, not on the FY2022–FY2023 lists and #32 in FY2024; up 5 since FY2024.
28	G4S Secure Integration LLC Top agencies DOS (Department of State)	$47,416,729	0.7%	Rank history: #99 in FY2021, #98 in FY2022, #69 in FY2023 and #21 in FY2024; down 7 since FY2024.
29	The Whitestone Group, Inc. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) DHS (Department of Homeland Security)	$42,997,200	0.7%	Rank history: not on the FY2021 list, #45 in FY2022, #53 in FY2023 and #45 in FY2024; up 16 since FY2024.
30	Hana Industries, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOT (Department of Transportation)	$41,259,221	0.6%	Rank history: #30 in FY2021, #30 in FY2022, #31 in FY2023 and #37 in FY2024; up 7 since FY2024.
31	Kr-Mtac LLC Top agencies DHS (Department of Homeland Security)	$39,720,088	0.6%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #33 in FY2024; up 2 since FY2024.
32	VMD Systems Integrators Inc Top agencies DHS (Department of Homeland Security)	$39,703,797	0.6%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and #34 in FY2024; up 2 since FY2024.
33	Bering Straits Professional Services, LLC Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services) Army (Department of the Army)	$36,857,944	0.6%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; up 26 since FY2024.
34	Golden Svcs, LLC Top agencies DHS (Department of Homeland Security) DOE (Department of Energy)	$36,522,135	0.6%	Rank history: #14 in FY2021, #13 in FY2022, #27 in FY2023 and #36 in FY2024; up 2 since FY2024.
35	Continuity Global Solutions LLC Top agencies DOS (Department of State) Army (Department of the Army) Navy (Department of the Navy)	$33,682,507	0.5%	Rank history: #49 in FY2021, #46 in FY2022, #38 in FY2023 and #50 in FY2024; up 15 since FY2024.
36	Acuity - Janus Global, LLC Top agencies DOS (Department of State)	$33,371,050	0.5%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; up 5 since FY2024.
37	Chenega Naswik International LLC Top agencies MDA (DOD Missile Defense Agency) DHS (Department of Homeland Security) Army (Department of the Army)	$33,073,722	0.5%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 3 since FY2024.
38	North American Security, Incorporated Top agencies DHS (Department of Homeland Security)	$31,467,789	0.5%	Rank history: #25 in FY2021, #29 in FY2022, #29 in FY2023 and #31 in FY2024; down 7 since FY2024.
39	G4S France JV Top agencies DOS (Department of State)	$26,050,075	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
40	ISS Action Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) CFPB (Consumer Financial Protection Bureau)	$25,025,186	0.4%	Rank history: #23 in FY2021, #19 in FY2022, #18 in FY2023 and #23 in FY2024; down 17 since FY2024.
41	Vision Quest Solutions Inc. Top agencies USDA (Department of Agriculture) Army (Department of the Army) DOE (Department of Energy)	$24,188,840	0.4%	Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
42	Patronus Systems Inc Top agencies DHS (Department of Homeland Security)	$23,341,843	0.4%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #39 in FY2024; down 3 since FY2024.
43	Ids International, LLC 2 awardees, including Ids International Government Services LLC Top agencies DOS (Department of State) NARA (National Archives and Records Administration)	$23,016,920	0.4%	Rank history: #42 in FY2021, not on the FY2022–FY2023 lists and #44 in FY2024; up 1 since FY2024.
44	Spectrum Security Services, Inc. Top agencies DHS (Department of Homeland Security)	$22,384,449	0.4%	Rank history: #45 in FY2021, #42 in FY2022, #44 in FY2023 and #52 in FY2024; up 8 since FY2024.
45	Aviation Security Management LLC Top agencies DHS (Department of Homeland Security)	$21,374,638	0.3%	Rank history: #34 in FY2021, #26 in FY2022, #28 in FY2023 and #47 in FY2024; up 2 since FY2024.
46	S1S Alpha LLC Top agencies DOD (Department of Defense)	$19,855,589	0.3%	Rank history: not on the FY2021 list, #54 in FY2022, #25 in FY2023 and #38 in FY2024; down 8 since FY2024.
47	Pinnacle Protection Partners, LLC Top agencies DHS (Department of Homeland Security)	$19,807,187	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
48	Culpepper & Associates Security Services Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) NARA (National Archives and Records Administration)	$18,433,696	0.3%	Rank history: #35 in FY2021, #41 in FY2022, #46 in FY2023 and #55 in FY2024; up 7 since FY2024.
49	Joeun System Corp. Top agencies Army (Department of the Army) DOS (Department of State)	$18,074,912	0.3%	Rank history: not on the FY2021 list, #51 in FY2022, #47 in FY2023 and #57 in FY2024; up 8 since FY2024.
50	United Security Inc. Top agencies DOJ (Department of Justice)	$17,471,516	0.3%	Rank history: #48 in FY2021, #58 in FY2022, #43 in FY2023 and #49 in FY2024; down 1 since FY2024.
51	SERVEXO Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOT (Department of Transportation)	$16,412,121	0.3%	Rank history: not on the FY2021–FY2024 lists; up 71 since FY2024.
52	I3 Pathfinder USA LLC Top agencies DOS (Department of State)	$16,075,801	0.3%	Rank history: #52 in FY2021, #55 in FY2022, #56 in FY2023 and #61 in FY2024; up 9 since FY2024.
53	G4S India JV Top agencies DOS (Department of State)	$16,052,259	0.3%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 10 since FY2024.
54	Ahtna Professional Services, Inc. Top agencies DHS (Department of Homeland Security)	$16,034,850	0.3%	Rank history: not on the FY2021 list, #65 in FY2022, #79 in FY2023 and #70 in FY2024; up 16 since FY2024.
55	The Cogar Group. Ltd. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$16,001,178	0.3%	Rank history: #58 in FY2021, #56 in FY2022, #51 in FY2023 and #69 in FY2024; up 14 since FY2024.
56	American Eagle Protective Services Corp Top agencies DHS (Department of Homeland Security) DOL (Department of Labor) DOJ (Department of Justice)	$15,538,907	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; up 15 since FY2024.
57	Strategic Security Corp Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$15,116,259	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #96 in FY2023 and #81 in FY2024; up 24 since FY2024.
58	HBC Management Services, Inc. Top agencies SSA (Social Security Administration)	$15,076,325	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
59	Alante Security Group, Inc. Top agencies DHS (Department of Homeland Security)	$14,979,559	0.2%	Rank history: #51 in FY2021, #83 in FY2022, #54 in FY2023 and #60 in FY2024; up 1 since FY2024.
60	American Security Programs Inc. Top agencies NARA (National Archives and Records Administration) GAO (Government Accountability Office)	$14,763,173	0.2%	Rank history: not on the FY2021–FY2024 lists; up 44 since FY2024.
61	Singularity Security Group LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$14,330,793	0.2%	Rank history: #89 in FY2021, #59 in FY2022, #62 in FY2023 and #62 in FY2024; up 1 since FY2024.
62	Johnson Security Bureau, Inc. Top agencies DHS (Department of Homeland Security)	$14,293,018	0.2%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 24 since FY2024.
63	Elliott Security Solutions LLC Top agencies DHS (Department of Homeland Security)	$13,902,000	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #71 in FY2023 and #83 in FY2024; up 20 since FY2024.
64	Prosecure, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$13,811,381	0.2%	Rank history: #61 in FY2021, #60 in FY2022, #63 in FY2023 and #75 in FY2024; up 11 since FY2024.
65	Excalibur Associates Inc. Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture)	$13,545,176	0.2%	Rank history: #43 in FY2021, #39 in FY2022, #37 in FY2023 and #46 in FY2024; down 19 since FY2024.
66	Surveillance Security, Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$13,349,299	0.2%	Rank history: #66 in FY2021, #64 in FY2022, #60 in FY2023 and #51 in FY2024; down 15 since FY2024.
67	Chenega Infinity, LLC Top agencies DHS (Department of Homeland Security)	$12,965,732	0.2%	Rank history: #21 in FY2021, #18 in FY2022, #22 in FY2023 and #42 in FY2024; down 25 since FY2024.
68	Defense Contracting Activity, LLC Top agencies USDA (Department of Agriculture) EPA (Environmental Protection Agency)	$12,926,750	0.2%	Rank history: #81 in FY2021, #91 in FY2022, #90 in FY2023 and #85 in FY2024; up 17 since FY2024.
69	Koniag Professional Services, LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$12,888,072	0.2%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 9 since FY2024.
70	Defense Consulting Services LLC Top agencies DHS (Department of Homeland Security) DISA (Defense Information Systems Agency) DHA (Defense Health Agency)	$12,750,407	0.2%	Rank history: not on the FY2021 list, #78 in FY2022, #59 in FY2023 and #74 in FY2024; up 4 since FY2024.
71	Chenega Security International, LLC Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency)	$12,404,774	0.2%	Rank history: #59 in FY2021, #50 in FY2022, #64 in FY2023 and #65 in FY2024; down 6 since FY2024.
72	Securemedy Inc. Top agencies National Gallery of Art Army (Department of the Army) HHS (Department of Health and Human Services)	$12,360,921	0.2%	Rank history: not on the FY2021–FY2024 lists; up 116 since FY2024.
73	Shields Point LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) Army (Department of the Army)	$12,034,488	0.2%	Rank history: not on the FY2021–FY2024 lists; up 134 since FY2024.
74	Redcon Solutions Group LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$11,989,969	0.2%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and #73 in FY2024; down 1 since FY2024.
75	Prudential Protective Services LLC Top agencies DOJ (Department of Justice) Commerce (Department of Commerce)	$11,772,828	0.2%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and #76 in FY2024; up 1 since FY2024.
76	VXL Enterprises LLC Top agencies DOS (Department of State)	$11,688,434	0.2%	Rank history: #63 in FY2021, #43 in FY2022, #55 in FY2023 and #77 in FY2024; up 1 since FY2024.
77	Protection Unit Top agencies Army (Department of the Army)	$11,511,014	0.2%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2024; up 5 since FY2024.
78	Tatitlek Federal Services LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$11,411,330	0.2%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; up 2 since FY2024.
79	Hana Technologies & Systems, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$11,295,221	0.2%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 17 since FY2024.
80	KR Contracting Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$11,099,902	0.2%	Rank history: #31 in FY2021, #31 in FY2022, #42 in FY2023 and #58 in FY2024; down 22 since FY2024.
81	Sicuritalia - Securitas Critical Infrastructure Services Inc JV Top agencies DOS (Department of State)	$10,594,637	0.2%	Rank history: #69 in FY2021, #68 in FY2022, #74 in FY2023 and #79 in FY2024; down 2 since FY2024.
82	Trinity Technology Group, Inc. Top agencies DHS (Department of Homeland Security)	$10,158,236	0.2%	Rank history: #47 in FY2021, #53 in FY2022, #58 in FY2023 and #56 in FY2024; down 26 since FY2024.
83	Master Security Company LLC Top agencies DHS (Department of Homeland Security)	$9,894,515	0.2%	Rank history: #36 in FY2021, #36 in FY2022, #36 in FY2023 and #43 in FY2024; down 40 since FY2024.
84	Civis Holding SPA Through C.i.v.i.s. Centro Italiano DI Vigilanza Interna E Stradale S.P.A. Top agencies Army (Department of the Army)	$9,815,969	0.2%	Rank history: not on the FY2021–FY2023 lists and #95 in FY2024; up 11 since FY2024.
85	First Coast Security Solutions Inc. Top agencies DHS (Department of Homeland Security)	$9,790,925	0.2%	Rank history: not on the FY2021–FY2024 lists; up 224 since FY2024.
86	Global Security Management Agency, Inc. Top agencies Navy (Department of the Navy) DOJ (Department of Justice) DMEA (Defense Microelectronics Activity)	$9,148,978	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, #72 in FY2023 and #99 in FY2024; up 13 since FY2024.
87	Amentum Holdings, Inc. Through Amentum Services, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$8,882,994	0.1%	Rank history: not on the FY2021–FY2024 lists; up 57 since FY2024.
88	NV Securitas Securitas Critical Infrastructure Services Soc. Top agencies DOS (Department of State)	$8,880,137	0.1%	Rank history: #72 in FY2021, #84 in FY2022, #86 in FY2023 and #92 in FY2024; up 4 since FY2024.
89	Universal Protection Service, LLC Top agencies DOI (Department of the Interior)	$8,710,495	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	Bering Global Solutions, LLC Top agencies Navy (Department of the Navy)	$8,438,694	0.1%	Rank history: not on the FY2021–FY2024 lists; up 240 since FY2024.
91	Gardaworld-Transguard Group UAE 2 awardees, including Gardaworld Federal Nigeria Top agencies DOS (Department of State)	$8,070,585	0.1%	Rank history: not on the FY2021–FY2024 lists; up 45 since FY2024.
92	Trust Consulting Services Inc. Top agencies DOT (Department of Transportation) EPA (Environmental Protection Agency) FCC (Federal Communications Commission)	$7,925,394	0.1%	Rank history: not on the FY2021–FY2024 lists; up 69 since FY2024.
93	Aegis-Kk Security Top agencies DOS (Department of State)	$7,829,042	0.1%	Rank history: #75 in FY2021, not on the FY2022 list, #83 in FY2023 and #90 in FY2024; down 3 since FY2024.
94	Deployed Resources LLC Top agencies DHS (Department of Homeland Security)	$7,466,830	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	G4S Guardsman JV Top agencies DOS (Department of State)	$7,275,074	0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 5 since FY2024.
96	G4S Denmark JV Top agencies DOS (Department of State)	$7,095,844	0.1%	Rank history: not on the FY2021–FY2024 lists; up 10 since FY2024.
97	Torres-Avarn Security LLC Top agencies DOS (Department of State)	$6,943,592	0.1%	Rank history: #95 in FY2021, #96 in FY2022 and not on the FY2023–FY2024 lists; up 5 since FY2024.
98	G4S Argentina JV Top agencies DOS (Department of State)	$6,564,213	0.1%	Rank history: not on the FY2021–FY2024 lists; up 3 since FY2024.
99	G4S Evik JV Top agencies DOS (Department of State)	$6,361,925	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2024; down 31 since FY2024.
100	Ambassador Worldwide Protection Agency, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$6,169,581	0.1%	Rank history: not on the FY2021–FY2024 lists; up 97 since FY2024.

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100 of 556 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 $6.36 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 561612 contractors in FY2025?

1. Securitas Electronic Security Inc. ($542M), 2. Metropolitan Security Services, Inc. ($528M), 3. Triple Canopy Inc. ($349M), 4. The GEO Group, Inc. ($348M), 5. Corecivic, Inc. ($315M), 6. Inter-CON Security Systems Inc. ($184M), 7. BC Partners LLP ($174M), 8. Mvm, Inc. ($173M), 9. Akima Infrastructure Protection LLC ($170M), 10. Covenant Aviation Security, LLC ($165M).

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