Top 100 Contractors in NAICS 561612: Security Guards and Patrol Services, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Triple Canopy Inc. 3 awardees, including Centerra Group, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State) AOUSC (Administrative Office of the U.S. Courts)	$664,579,648	12.5%	Rank history: #1 in FY2022, #2 in FY2023, #6 in FY2024 and #3 in FY2025; unchanged since FY2020.
2	Securitas AB 2 awardees, including Paragon Systems Inc. Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) HHS (Department of Health and Human Services)	$630,742,279	11.9%	Rank history: #2 in FY2022, #1 in FY2023, #2 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	The Day & Zimmermann Group, Inc. Through SOC LLC Top agencies DOS (Department of State) DOE (Department of Energy)	$201,528,834	3.8%	Rank history: #6 in FY2022, #15 in FY2023, #66 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Metropolitan Security Services, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice)	$194,294,040	3.7%	Rank history: #5 in FY2022, #4 in FY2023, #1 in FY2024 and #2 in FY2025; up 1 since FY2020.
5	Inter-Con Security Systems, Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) DOI (Department of the Interior)	$176,158,590	3.3%	Rank history: #9 in FY2022, #9 in FY2023, #10 in FY2024 and #6 in FY2025; up 1 since FY2020.
6	G4S Holding One Inc. 7 awardees, including G4S Secure Integration LLC, G4S Secure Solutions (USA) Inc. and G4S Secure Solutions International Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) DOI (Department of the Interior)	$175,329,217	3.3%	Rank history: #8 in FY2022, #8 in FY2023, #29 in FY2024 and not on the FY2025 list; up 5 since FY2020.
7	The GEO Group, Inc. 2 awardees Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$164,190,312	3.1%	Rank history: #4 in FY2022, #5 in FY2023, #5 in FY2024 and #4 in FY2025; up 2 since FY2020.
8	Aegis Defense Services, 2 awardees, including Gardaworld Federal Services LLC Top agencies DOS (Department of State) Army (Department of the Army) USAF (Department of the Air Force)	$156,028,707	2.9%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
9	Corecivic, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$152,055,318	2.9%	Rank history: #7 in FY2022, #7 in FY2023, #8 in FY2024 and #5 in FY2025; up 1 since FY2020.
10	Mvm, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$134,535,089	2.5%	Rank history: #3 in FY2022, #6 in FY2023, #7 in FY2024 and #8 in FY2025; up 3 since FY2020.
11	Pond Security Service GMBH Top agencies Army (Department of the Army) DOS (Department of State) DODEA (Department of Defense Education Activity)	$126,227,833	2.4%	Rank history: #10 in FY2022, #11 in FY2023, #13 in FY2024 and #12 in FY2025; down 3 since FY2020.
12	Covenant Aviation Security LLC Top agencies DHS (Department of Homeland Security)	$114,368,249	2.2%	Rank history: #11 in FY2022, #10 in FY2023, #11 in FY2024 and #10 in FY2025; unchanged since FY2020.
13	Nana Regional Corporation Inc 3 awardees, including Akima Global Services, LLC, Lockwood Hills Federal LLC and Rivertech LLC Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$108,247,851	2.0%	Rank history: #12 in FY2022, #14 in FY2023, #22 in FY2024 and #21 in FY2025; up 12 since FY2020.
14	Golden Svcs, LLC Top agencies DHS (Department of Homeland Security) DOE (Department of Energy) NASA (National Aeronautics and Space Administration)	$70,185,956	1.3%	Rank history: #13 in FY2022, #27 in FY2023, #36 in FY2024 and #34 in FY2025; up 1 since FY2020.
15	Vendtech-Sgi LLC Top agencies DHS (Department of Homeland Security)	$64,287,060	1.2%	Rank history: #17 in FY2022, #19 in FY2023, #18 in FY2024 and #20 in FY2025; up 3 since FY2020.
16	Diversified Protection Corp Top agencies DHS (Department of Homeland Security) WHS (DOD Washington Headquarters Service) DOL (Department of Labor)	$63,380,676	1.2%	Rank history: #16 in FY2022, #20 in FY2023, #30 in FY2024 and #25 in FY2025; up 3 since FY2020.
17	EOD Technology Inc. Through Acuity - Janus Global, LLC Top agencies DOS (Department of State)	$55,894,927	1.1%	Rank history: #15 in FY2022, #23 in FY2023, #53 in FY2024 and not on the FY2025 list; up 11 since FY2020.
18	Afognak Native Corporation 5 awardees, including Alutiiq Advanced Security Solutions LLC, Shields Point LLC and Alutiiq Security & Technology, LLC Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) DOJ (Department of Justice)	$54,565,678	1.0%	Rank history: #35 in FY2022, #45 in FY2023, #67 in FY2024 and not on the FY2025 list; up 20 since FY2020.
19	Global Precision Systems, LLC Top agencies DHS (Department of Homeland Security)	$54,536,028	1.0%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
20	VMD Systems Integrators, LLC Top agencies DHS (Department of Homeland Security)	$47,454,913	0.9%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
21	Chenega Infinity, LLC Top agencies DHS (Department of Homeland Security) MDA (DOD Missile Defense Agency) DOI (Department of the Interior)	$46,854,021	0.9%	Rank history: #18 in FY2022, #22 in FY2023, #42 in FY2024 and #67 in FY2025; down 5 since FY2020.
22	CDA Incorporated Top agencies DHS (Department of Homeland Security)	$45,553,774	0.9%	Rank history: #25 in FY2022, #35 in FY2023, #20 in FY2024 and #19 in FY2025; down 2 since FY2020.
23	ISS Action Inc. Top agencies DHS (Department of Homeland Security) CFPB (Consumer Financial Protection Bureau) DOI (Department of the Interior)	$44,427,202	0.8%	Rank history: #19 in FY2022, #18 in FY2023, #23 in FY2024 and #40 in FY2025; up 3 since FY2020.
24	Universal Protection GP, LLC 2 awardees, including Universal Protection Service, Limited Partnership and Universal Protection Service, LLC Top agencies Smithsonian (Smithsonian Institution) DHS (Department of Homeland Security) DOI (Department of the Interior)	$41,363,304	0.8%	Rank history: #21 in FY2022, #16 in FY2023, #25 in FY2024 and not on the FY2025 list; up 71 since FY2020.
25	North American Security, Incorporated Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce) USAF (Department of the Air Force)	$40,206,561	0.8%	Rank history: #29 in FY2022, #29 in FY2023, #31 in FY2024 and #38 in FY2025; down 1 since FY2020.
26	Securamerica, LLC Through American Security Programs Inc. Top agencies DHS (Department of Homeland Security) GAO (Government Accountability Office) NARA (National Archives and Records Administration)	$38,956,716	0.7%	Rank history: #80 in FY2022, #50 in FY2023, #72 in FY2024 and not on the FY2025 list; down 12 since FY2020.
27	American Security Programs Inc 2 awardees, including Sos Security LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State) SEC (Securities and Exchange Commission)	$38,696,031	0.7%	Rank history: #14 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 75 since FY2020.
28	Centerra Group, LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) DOE (Department of Energy)	$38,137,166	0.7%	Rank history: #90 in FY2022, not on the FY2023 list, #12 in FY2024 and #14 in FY2025; down 5 since FY2020.
29	Management & Training Corporation Top agencies DHS (Department of Homeland Security)	$36,734,130	0.7%	Rank history: #28 in FY2022, #26 in FY2023, #28 in FY2024 and #26 in FY2025; unchanged since FY2020.
30	Hana Industries, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOT (Department of Transportation)	$34,136,472	0.6%	Rank history: #30 in FY2022, #31 in FY2023, #37 in FY2024 and #30 in FY2025; up 4 since FY2020.
31	KR Contracting Inc. Top agencies DHS (Department of Homeland Security)	$30,963,725	0.6%	Rank history: #31 in FY2022, #42 in FY2023, #58 in FY2024 and #80 in FY2025; up 2 since FY2020.
32	Ahtna, Incorporated Through Ahtna Support & Training Services LLC Top agencies DHS (Department of Homeland Security)	$30,642,581	0.6%	Rank history: #27 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
33	The Chenega Corporation 3 awardees, including Chenega Global Protection, LLC and Chenega Security & Support Solutions, LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) Navy (Department of the Navy)	$29,131,095	0.5%	Rank history: #23 in FY2022, #12 in FY2023, #35 in FY2024 and not on the FY2025 list; up 57 since FY2020.
34	Aviation Security Management LLC Top agencies DHS (Department of Homeland Security)	$26,373,228	0.5%	Rank history: #26 in FY2022, #28 in FY2023, #47 in FY2024 and #45 in FY2025; up 15 since FY2020.
35	Culpepper & Associates Security Services Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DOE (Department of Energy)	$24,415,332	0.5%	Rank history: #41 in FY2022, #46 in FY2023, #55 in FY2024 and #48 in FY2025; up 8 since FY2020.
36	Master Security Company LLC Top agencies DHS (Department of Homeland Security)	$23,576,972	0.4%	Rank history: #36 in FY2022, #36 in FY2023, #43 in FY2024 and #83 in FY2025; up 21 since FY2020.
37	Nve, Inc. Top agencies DOS (Department of State)	$22,795,750	0.4%	Rank history: #24 in FY2022, #33 in FY2023, #91 in FY2024 and #23 in FY2025; up 4 since FY2020.
38	American-Paragon Protective Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$22,568,008	0.4%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
39	Bering Straits Native Corporation Through Bering Global Solutions, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$20,923,478	0.4%	Rank history: #37 in FY2022, #39 in FY2023, #88 in FY2024 and not on the FY2025 list; up 1 since FY2020.
40	Patronus Systems Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$20,338,498	0.4%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
41	Apsi-Centerra JV, LLC Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$20,288,583	0.4%	Rank history: #66 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
42	Ids International, LLC Top agencies DOS (Department of State) NARA (National Archives and Records Administration)	$18,744,100	0.4%	Rank history: not on the FY2022–FY2023 lists, #44 in FY2024 and #43 in FY2025; up 14 since FY2020.
43	Excalibur Associates Inc. 2 awardees, including Excalibur Security Services Inc. Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$17,779,356	0.3%	Rank history: #39 in FY2022, #37 in FY2023, #46 in FY2024 and #65 in FY2025; up 28 since FY2020.
44	PAE Government Services Inc. Through PAE Professional Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$17,713,654	0.3%	Rank history: #47 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; up 32 since FY2020.
45	Spectrum Security Services, Inc. Top agencies DHS (Department of Homeland Security)	$17,649,846	0.3%	Rank history: #42 in FY2022, #44 in FY2023, #52 in FY2024 and #44 in FY2025; up 1 since FY2020.
46	American Eagle Protective Services Corp Top agencies DHS (Department of Homeland Security) DOL (Department of Labor)	$17,310,417	0.3%	Rank history: #73 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
47	Trinity Technology Group, Inc. Top agencies DHS (Department of Homeland Security)	$17,003,223	0.3%	Rank history: #53 in FY2022, #58 in FY2023, #56 in FY2024 and #82 in FY2025; up 7 since FY2020.
48	United Security Inc. Top agencies DOJ (Department of Justice)	$16,962,418	0.3%	Rank history: #58 in FY2022, #43 in FY2023, #49 in FY2024 and #50 in FY2025; up 10 since FY2020.
49	Torres Advanced Enterprise Solutions LLC 2 awardees, including Continuity Global Solutions LLC and Torres-Arkhe Group LLC Top agencies DOS (Department of State) Army (Department of the Army) Navy (Department of the Navy)	$16,144,698	0.3%	Rank history: #46 in FY2022, #38 in FY2023, #50 in FY2024 and #35 in FY2025; up 6 since FY2020.
50	Kerberos International, Inc. 2 awardees, including Acadia Protective Services II, LLC Top agencies DHS (Department of Homeland Security) DOT (Department of Transportation) DOI (Department of the Interior)	$16,133,310	0.3%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
51	Alante Security Group, Inc. Top agencies DHS (Department of Homeland Security)	$14,835,988	0.3%	Rank history: #83 in FY2022, #54 in FY2023, #60 in FY2024 and #59 in FY2025; up 13 since FY2020.
52	I3 Pathfinder USA LLC Top agencies DOS (Department of State)	$14,643,287	0.3%	Rank history: #55 in FY2022, #56 in FY2023, #61 in FY2024 and #52 in FY2025; up 7 since FY2020.
53	Jang Pung HR Ltd. Top agencies Army (Department of the Army)	$14,602,662	0.3%	Rank history: not on the FY2022–FY2025 lists; up 47 since FY2020.
54	Praetorian Standard, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$14,201,772	0.3%	Rank history: #48 in FY2022, #66 in FY2023, #84 in FY2024 and not on the FY2025 list; up 11 since FY2020.
55	Ahtna Support & Training Services LLC Top agencies DHS (Department of Homeland Security)	$14,200,313	0.3%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
56	Prudential Protective Services LLC Top agencies DOJ (Department of Justice) Commerce (Department of Commerce)	$13,994,708	0.3%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
57	Elite Protective Services, Inc. Top agencies DHS (Department of Homeland Security)	$13,740,153	0.3%	Rank history: #62 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
58	The Cogar Group. Ltd. Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$13,668,866	0.3%	Rank history: #56 in FY2022, #51 in FY2023, #69 in FY2024 and #55 in FY2025; up 5 since FY2020.
59	Chenega Security International, LLC Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency)	$13,617,232	0.3%	Rank history: #50 in FY2022, #64 in FY2023, #65 in FY2024 and #71 in FY2025; up 2 since FY2020.
60	Athena Joint Venture Services, LLC Top agencies DHS (Department of Homeland Security)	$12,787,554	0.2%	Rank history: #57 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
61	Prosecure, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$12,550,896	0.2%	Rank history: #60 in FY2022, #63 in FY2023, #75 in FY2024 and #64 in FY2025; up 97 since FY2020.
62	Ameriguard Security Services, Inc. Top agencies HHS (Department of Health and Human Services) SSA (Social Security Administration) VA (Department of Veterans Affairs)	$12,182,892	0.2%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
63	VXL Enterprises LLC Top agencies DOS (Department of State)	$12,165,275	0.2%	Rank history: #43 in FY2022, #55 in FY2023, #77 in FY2024 and #76 in FY2025; up 19 since FY2020.
64	Excelsior Defense, Inc. Top agencies VA (Department of Veterans Affairs) PBGC (Pension Benefit Guaranty Corporation)	$12,056,816	0.2%	Rank history: #63 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
65	U.S. Security Associates Inc. 3 awardees, including FJC Security Services Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$11,776,704	0.2%	Rank history: #81 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
66	Surveillance Security, Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DLA (Defense Logistics Agency)	$11,061,803	0.2%	Rank history: #64 in FY2022, #60 in FY2023, #51 in FY2024 and #66 in FY2025; up 21 since FY2020.
67	Guard Force Inc. Top agencies VA (Department of Veterans Affairs)	$10,835,092	0.2%	Rank history: #77 in FY2022, #75 in FY2023 and not on the FY2024–FY2025 lists; up 43 since FY2020.
68	Security Walls LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) USDA (Department of Agriculture)	$10,543,599	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
69	Sicuritalia - Securitas Critical Infrastructure Services Inc JV Top agencies DOS (Department of State)	$10,491,842	0.2%	Rank history: #68 in FY2022, #74 in FY2023, #79 in FY2024 and #81 in FY2025; up 6 since FY2020.
70	SEPARGEFI Through Seris Security Top agencies Army (Department of the Army)	$10,428,607	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
71	Inner-Parish Security, Corp Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$10,045,249	0.2%	Rank history: #72 in FY2022, #68 in FY2023, #87 in FY2024 and not on the FY2025 list; up 13 since FY2020.
72	NV Securitas Securitas Critical Infrastructure Services Soc. Top agencies DOS (Department of State)	$9,991,353	0.2%	Rank history: #84 in FY2022, #86 in FY2023, #92 in FY2024 and #88 in FY2025; up 34 since FY2020.
73	The J. Diamond Group. Inc. Top agencies DHS (Department of Homeland Security)	$9,466,665	0.2%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
74	Gardaworld Federal Nigeria Top agencies DOS (Department of State)	$9,246,496	0.2%	Rank history: #71 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
75	Aegis-Kk Security Top agencies DOS (Department of State)	$8,628,223	0.2%	Rank history: not on the FY2022 list, #83 in FY2023, #90 in FY2024 and #93 in FY2025; down 3 since FY2020.
76	MSS Security PTY Limited Top agencies DOS (Department of State)	$8,073,722	0.2%	Rank history: #87 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; up 67 since FY2020.
77	Trailboss Enterprises, Inc. Top agencies DHS (Department of Homeland Security)	$7,986,872	0.2%	Rank history: not on the FY2022–FY2023 lists, #32 in FY2024 and #27 in FY2025; down 29 since FY2020.
78	North Texas Investors Group, Inc. Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency)	$7,965,459	0.2%	Rank history: #49 in FY2022, #84 in FY2023, #89 in FY2024 and not on the FY2025 list; up 78 since FY2020.
79	Security Alliance LLC Top agencies DOS (Department of State)	$7,889,814	0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
80	B O S Security, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$7,697,507	0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
81	Defense Contracting Activity, LLC Top agencies USDA (Department of Agriculture)	$7,606,279	0.1%	Rank history: #91 in FY2022, #90 in FY2023, #85 in FY2024 and #68 in FY2025; up 63 since FY2020.
82	Bradley Technologies Inc. Top agencies DHS (Department of Homeland Security) CFTC (Commodity Futures Trading Commission)	$7,575,774	0.1%	Rank history: #74 in FY2022, #30 in FY2023, #19 in FY2024 and #17 in FY2025; up 17 since FY2020.
83	Jackson Hole Airport Board Top agencies DHS (Department of Homeland Security)	$7,550,761	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
84	Security Watch Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) DOI (Department of the Interior)	$7,504,530	0.1%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
85	Westmoreland Protection Agency, Inc. Top agencies VA (Department of Veterans Affairs)	$7,481,689	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
86	First Coast Security Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$6,961,324	0.1%	Rank history: #88 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
87	The Tatitlek Corporation 2 awardees, including Tatitlek Federal Services LLC and Tatitlek Technologies, LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$6,802,782	0.1%	Rank history: #61 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
88	C.I.V.I.S. Centro Italiano DI Vigilanza Interna E Stradale SPA Top agencies Army (Department of the Army)	$6,589,819	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
89	Singularity Security Group LLC Top agencies Navy (Department of the Navy)	$6,572,969	0.1%	Rank history: #59 in FY2022, #62 in FY2023, #62 in FY2024 and #61 in FY2025; new, not ranked in FY2020.
90	Asset Protection & Security Services, L.P. Top agencies DHS (Department of Homeland Security)	$6,549,136	0.1%	Rank history: not on the FY2022–FY2025 lists; down 59 since FY2020.
91	County of Sacramento Through Sacramento County Sheriffs Department Top agencies DOI (Department of the Interior)	$6,531,023	0.1%	Rank history: #92 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
92	1ST Class Security, Inc. Top agencies VA (Department of Veterans Affairs)	$6,450,840	0.1%	Rank history: not on the FY2022–FY2025 lists; up 48 since FY2020.
93	Securitas A S and Scis JV Top agencies DOS (Department of State)	$6,048,394	0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
94	Agma Security Service Inc. Top agencies DHS (Department of Homeland Security)	$6,011,384	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
95	Torres-Avarn Security LLC Top agencies DOS (Department of State)	$5,845,148	0.1%	Rank history: #96 in FY2022, not on the FY2023–FY2024 lists and #97 in FY2025; up 12 since FY2020.
96	Aquate II, LLC Top agencies Navy (Department of the Navy)	$5,622,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
97	Safeguard Security Services (Pvt) Ltd Top agencies DOS (Department of State)	$5,380,428	0.1%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
98	Boutchantharaj Corporation Top agencies DOT (Department of Transportation) DOI (Department of the Interior) HHS (Department of Health and Human Services)	$5,370,703	0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
99	G4S Secure Integration LLC Top agencies DOS (Department of State)	$5,335,204	0.1%	Rank history: #98 in FY2022, #69 in FY2023, #21 in FY2024 and #28 in FY2025; down 69 since FY2020.
100	Servexo Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DOI (Department of the Interior)	$5,299,623	0.1%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.

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 $5.3 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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