Top 100 Contractors in NAICS 561621: Security Systems Services (except Locksmiths), FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	M.c. Dean, Inc. 2 awardees, including M.c. Dean Europe GMBH Top agencies DOD (Department of Defense) AOUSC (Administrative Office of the U.S. Courts) DOT (Department of Transportation)	$120,561,474	14.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Serco Inc Top agencies Navy (Department of the Navy)	$103,619,439	12.6%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Securitas Critical Infrastructure Services Inc. 2 awardees, including Paragon Systems Inc. and Securitas Electronic Security, Inc. Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) USDA (Department of Agriculture)	$58,041,378	7.1%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; up 5 since FY2024.
4	General Dynamics Corporation Through General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$44,600,585	5.4%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 1 since FY2024.
5	CACI International Inc. 3 awardees, including Caci, Inc. - Federal Top agencies USAF (Department of the Air Force)	$36,497,761	4.4%	Rank history: #5 in FY2021, #7 in FY2022, #6 in FY2023 and #7 in FY2024; up 2 since FY2024.
6	Johnson Controls Security Solutions LLC Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) Treasury (Department of the Treasury)	$26,825,863	3.3%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2023 and #6 in FY2024; unchanged since FY2024.
7	Parsons Corporation 4 awardees, including Xator LLC, Ptsi Managed Services Inc. and Williams Electric Co Inc. Top agencies USAF (Department of the Air Force) Smithsonian (Smithsonian Institution) Army (Department of the Army)	$23,836,999	2.9%	Rank history: not on the FY2021 list, #51 in FY2022, #31 in FY2023 and #19 in FY2024; up 12 since FY2024.
8	Johnson Controls Federal Systems, LLC 2 awardees, including Johnson Controls Building Automation Systems, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOJ (Department of Justice)	$20,531,151	2.5%	Rank history: not on the FY2021–FY2024 lists; new.
9	Constellis, LLC Through Triple Canopy Inc. Top agencies DHS (Department of Homeland Security)	$15,361,183	1.9%	Rank history: not on the FY2021–FY2024 lists; new.
10	Tyco Fire Products LP 2 awardees, including Johnson Controls Fire Protection LP and Johnson Controls, Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) USDA (Department of Agriculture)	$14,684,204	1.8%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2024; up 8 since FY2024.
11	The Chenega Corporation 6 awardees, including Chenega Integrated Security Solutions, LLC, Chenega Sentinel 360, LLC and Chenega Security International, LLC Top agencies SEC (Securities and Exchange Commission) MDA (DOD Missile Defense Agency) DISA (Defense Information Systems Agency)	$12,947,252	1.6%	Rank history: #6 in FY2021, #10 in FY2022, #10 in FY2023 and not on the FY2024 list; returned.
12	Scdatacom LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency)	$12,098,301	1.5%	Rank history: #72 in FY2021, #23 in FY2022, #22 in FY2023 and #13 in FY2024; up 1 since FY2024.
13	Birdi Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$10,629,387	1.3%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; down 3 since FY2024.
14	Media Plumbing & Heating Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,205,386	1.1%	Rank history: #14 in FY2021, #14 in FY2022, #21 in FY2023 and #17 in FY2024; up 3 since FY2024.
15	KBR Wyle Services LLC 2 awardees Top agencies DOT (Department of Transportation) AOUSC (Administrative Office of the U.S. Courts)	$8,925,843	1.1%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; up 5 since FY2024.
16	Olgoonik Corporation Through Olgoonik Solutions LLC Top agencies DOE (Department of Energy)	$8,306,428	1.0%	Rank history: #26 in FY2021, #42 in FY2022, #33 in FY2023 and not on the FY2024 list; returned.
17	Evergreen Fire Alarms LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$6,581,044	0.8%	Rank history: #11 in FY2021, #31 in FY2022, #20 in FY2023 and #30 in FY2024; up 13 since FY2024.
18	Indyne, Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$6,442,495	0.8%	Rank history: #15 in FY2021, #19 in FY2022, #26 in FY2023 and #21 in FY2024; up 3 since FY2024.
19	Electronic Systems Services Inc. Top agencies Treasury (Department of the Treasury)	$6,019,472	0.7%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; up 4 since FY2024.
20	Versar, Inc. Through Versar Security Systems, LLC Top agencies GAO (Government Accountability Office) AOUSC (Administrative Office of the U.S. Courts) DOT (Department of Transportation)	$5,300,124	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
21	Itm4G LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$5,287,407	0.6%	Rank history: #43 in FY2021, #22 in FY2022, #24 in FY2023 and #26 in FY2024; up 5 since FY2024.
22	SRC Inc. Through Srctec, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$5,153,024	0.6%	Rank history: #9 in FY2021, #20 in FY2022, #17 in FY2023 and #100 in FY2024; up 78 since FY2024.
23	Firelake Construction Inc. 2 awardees Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$5,015,470	0.6%	Rank history: #31 in FY2021, #41 in FY2022, #38 in FY2023 and #29 in FY2024; up 6 since FY2024.
24	Trofholz Technologies, Inc. Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$4,512,675	0.6%	Rank history: #19 in FY2021, #15 in FY2022, #15 in FY2023 and #22 in FY2024; down 2 since FY2024.
25	Warfeather, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army) VA (Department of Veterans Affairs)	$4,315,520	0.5%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and #50 in FY2024; up 25 since FY2024.
26	Global Resource Solutions Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$4,302,190	0.5%	Rank history: #40 in FY2021, #43 in FY2022, #32 in FY2023 and #36 in FY2024; up 10 since FY2024.
27	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) Army (Department of the Army)	$4,118,434	0.5%	Rank history: #18 in FY2021, #27 in FY2022, #16 in FY2023 and #24 in FY2024; down 3 since FY2024.
28	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$3,872,655	0.5%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list and #47 in FY2024; up 19 since FY2024.
29	Afognak Native Corporation 2 awardees, including Red Peak Technical Services, LLC and Shields Point LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$3,778,100	0.5%	Rank history: #49 in FY2021, #57 in FY2022 and not on the FY2023–FY2024 lists; up 141 since FY2024.
30	Bristol Bay Native Corporation Through Vista Defense Technologies, LLC Top agencies DHA (Defense Health Agency)	$3,612,928	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
31	Digital Air Control, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$3,426,141	0.4%	Rank history: #94 in FY2021 and not on the FY2022–FY2024 lists; returned.
32	Echelon Services, LLC Top agencies HUD (Department of Housing and Urban Development) DOD (Department of Defense)	$3,182,179	0.4%	Rank history: #69 in FY2021, #92 in FY2022, #54 in FY2023 and #49 in FY2024; up 17 since FY2024.
33	Ukpeagvik Inupiat Corporation Through Bowhead Protection & Security Services LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$3,177,556	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
34	Electripro, Inc. Top agencies DHS (Department of Homeland Security)	$3,058,567	0.4%	Rank history: not on the FY2021 list, #18 in FY2022, #36 in FY2023 and not on the FY2024 list; returned.
35	Cmn, LLC Top agencies DHS (Department of Homeland Security)	$2,967,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #79 in FY2024; up 44 since FY2024.
36	Low Voltage Wiring Ltd Top agencies USAF (Department of the Air Force) Army (Department of the Army) Treasury (Department of the Treasury)	$2,915,071	0.4%	Rank history: #20 in FY2021, not on the FY2022 list, #37 in FY2023 and not on the FY2024 list; up 84 since FY2024.
37	Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) Army (Department of the Army)	$2,904,876	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
38	Gonzales Consulting Services Inc Top agencies SSA (Social Security Administration)	$2,811,316	0.3%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 4 since FY2024.
39	Smiths Detection Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$2,808,851	0.3%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; up 2 since FY2024.
40	Xtec, Incorporated Top agencies USAGM (US Agency for Global Media)	$2,804,964	0.3%	Rank history: not on the FY2021–FY2024 lists; up 115 since FY2024.
41	V2X, Inc. Through Advantor Systems II LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$2,722,579	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; down 14 since FY2024.
42	Total-Evergreen JV LLC Top agencies Army (Department of the Army)	$2,673,336	0.3%	Rank history: not on the FY2021 list, #45 in FY2022, #43 in FY2023 and #38 in FY2024; down 4 since FY2024.
43	Cynergy Professional Systems LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$2,505,506	0.3%	Rank history: #70 in FY2021, #33 in FY2022, #57 in FY2023 and #69 in FY2024; up 26 since FY2024.
44	Systems Northwest, LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$2,468,650	0.3%	Rank history: #56 in FY2021, #78 in FY2022, #61 in FY2023 and #53 in FY2024; up 9 since FY2024.
45	Ginisis Group Inc. Top agencies USAF (Department of the Air Force)	$2,231,952	0.3%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 32 since FY2024.
46	Ciri Development Corporation Through Lbyd Federal, LLC Top agencies OSD (Office of the Secretary of Defense)	$1,912,575	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
47	Open Systems Technologies Corporation Top agencies Army (Department of the Army)	$1,875,346	0.2%	Rank history: not on the FY2021–FY2024 lists; up 211 since FY2024.
48	Aktarius LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,847,747	0.2%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2024; up 18 since FY2024.
49	KR Contracting Inc. Top agencies OPM (Office of Personnel Management)	$1,845,505	0.2%	Rank history: #44 in FY2021, #48 in FY2022, #47 in FY2023 and #81 in FY2024; up 32 since FY2024.
50	HQE Systems Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,780,410	0.2%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; up 1 since FY2024.
51	Sernotti Electrical Services LLC Top agencies Navy (Department of the Navy)	$1,702,085	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and #63 in FY2024; up 12 since FY2024.
52	Seneca Federal Solutions, LLC Top agencies DHA (Defense Health Agency)	$1,689,329	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
53	Usmax Corporation Top agencies USAID (US Agency for International Development)	$1,674,748	0.2%	Rank history: #28 in FY2021, #38 in FY2022, #49 in FY2023 and not on the FY2024 list; up 108 since FY2024.
54	Drake Consulting LLC Top agencies USAF (Department of the Air Force)	$1,615,863	0.2%	Rank history: not on the FY2021–FY2024 lists; up 145 since FY2024.
55	Digitronics, Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) DCMA (Defense Contract Management Agency)	$1,610,007	0.2%	Rank history: not on the FY2021–FY2024 lists; up 137 since FY2024.
56	AES Systems Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$1,606,641	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2024 list; up 51 since FY2024.
57	Professionals HIR LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,594,887	0.2%	Rank history: #22 in FY2021, #88 in FY2022, #100 in FY2023 and #59 in FY2024; up 2 since FY2024.
58	Intellimar Inc. 2 awardees, including Concentric Security LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) Smithsonian (Smithsonian Institution)	$1,584,736	0.2%	Rank history: #99 in FY2021, #86 in FY2022, #63 in FY2023 and not on the FY2024 list; up 304 since FY2024.
59	J2 Associates, LLC Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) USDA (Department of Agriculture)	$1,569,040	0.2%	Rank history: #74 in FY2021, #64 in FY2022, #99 in FY2023 and #89 in FY2024; up 30 since FY2024.
60	Integrated Security Technologies Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,565,868	0.2%	Rank history: #35 in FY2021, #62 in FY2022, #39 in FY2023 and #34 in FY2024; down 26 since FY2024.
61	Systems Engineering Services Corporation Through Systems Engineering Inc. Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) NTSB (National Transportation Safety Board)	$1,538,734	0.2%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; down 15 since FY2024.
62	Ldia Holdings, LLC Top agencies USAF (Department of the Air Force)	$1,509,717	0.2%	Rank history: not on the FY2021 list, #59 in FY2022, #93 in FY2023 and #73 in FY2024; up 11 since FY2024.
63	Honeywell International Inc. 7 awardees, including Vindicator Technologies, Inc. Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$1,446,551	0.2%	Rank history: #90 in FY2021, #63 in FY2022, #41 in FY2023 and not on the FY2024 list; up 249 since FY2024.
64	Monaco Enterprises, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$1,397,725	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2024 list; up 39 since FY2024.
65	Signet Technologies, Inc. Top agencies DLA (Defense Logistics Agency) Peace Corps DOI (Department of the Interior)	$1,321,663	0.2%	Rank history: #38 in FY2021, #60 in FY2022, #30 in FY2023 and #37 in FY2024; down 28 since FY2024.
66	Onerain Incorporated Top agencies DOI (Department of the Interior)	$1,254,151	0.2%	Rank history: #67 in FY2021, #81 in FY2022, #92 in FY2023 and #93 in FY2024; up 27 since FY2024.
67	Optimum Low Voltage LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOI (Department of the Interior)	$1,220,423	0.1%	Rank history: not on the FY2021–FY2024 lists; up 59 since FY2024.
68	M3T Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USDA (Department of Agriculture)	$1,194,201	0.1%	Rank history: #88 in FY2021, #89 in FY2022, not on the FY2023 list and #74 in FY2024; up 6 since FY2024.
69	The Whitestone Group, Inc. Top agencies Navy (Department of the Navy)	$1,189,843	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Corelogix Consulting Inc. Top agencies DHS (Department of Homeland Security)	$1,187,152	0.1%	Rank history: #77 in FY2021, #16 in FY2022, #34 in FY2023 and #91 in FY2024; up 21 since FY2024.
71	Kastle Systems LLC Top agencies SBA (Small Business Administration) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$1,155,239	0.1%	Rank history: #36 in FY2021, #47 in FY2022, #52 in FY2023 and #56 in FY2024; down 15 since FY2024.
72	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$1,106,983	0.1%	Rank history: #52 in FY2021, #74 in FY2022, #82 in FY2023 and #94 in FY2024; up 22 since FY2024.
73	The Fields Group, LLC Top agencies FTC (Federal Trade Commission)	$1,064,781	0.1%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
74	Applied Security Technologies Inc. Top agencies DOS (Department of State)	$1,060,664	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; down 4 since FY2024.
75	Kituwah Services, LLC Top agencies USDA (Department of Agriculture)	$1,054,766	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
76	JH Elektroanlagen GMBH & Co. KG Top agencies Army (Department of the Army)	$1,050,462	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
77	Tactica Solutions LLC Top agencies Army (Department of the Army)	$1,050,376	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
78	Security2000 LLC Top agencies Army (Department of the Army)	$1,040,036	0.1%	Rank history: #50 in FY2021, #85 in FY2022, #97 in FY2023 and #83 in FY2024; up 5 since FY2024.
79	Sentrillion Corporation Top agencies USAF (Department of the Air Force)	$1,039,845	0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and not on the FY2024 list; up 271 since FY2024.
80	Condortech Services, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOI (Department of the Interior)	$1,035,268	0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023 and #65 in FY2024; down 15 since FY2024.
81	West Construction, LLC Top agencies Navy (Department of the Navy)	$1,034,898	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and not on the FY2024 list; returned.
82	Wingmann LLC Top agencies USAF (Department of the Air Force)	$1,030,578	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	F-Concepts, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,006,441	0.1%	Rank history: #93 in FY2021, #82 in FY2022, not on the FY2023 list and #72 in FY2024; down 11 since FY2024.
84	Dacama, LLC Top agencies Army (Department of the Army)	$974,650	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
85	Trilogy Secured Services, L.l.c Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$971,482	0.1%	Rank history: #58 in FY2021, #68 in FY2022, #19 in FY2023 and #28 in FY2024; down 57 since FY2024.
86	T47 International Inc. Top agencies Army (Department of the Army)	$924,452	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2024; up 6 since FY2024.
87	Nana Regional Corporation Inc. Through Lockwood Hills Federal LLC Top agencies Army (Department of the Army)	$919,871	0.1%	Rank history: not on the FY2021 list, #67 in FY2022, #73 in FY2023 and not on the FY2024 list; up 47 since FY2024.
88	Assa Abloy Global Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$912,322	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Scott Total Security Limited Top agencies USAF (Department of the Air Force)	$890,693	0.1%	Rank history: not on the FY2021–FY2024 lists; up 41 since FY2024.
90	TKH Construction, LLC Top agencies Navy (Department of the Navy)	$888,807	0.1%	Rank history: not on the FY2021–FY2024 lists; up 19 since FY2024.
91	Ma Impianti S.R.L. Top agencies Army (Department of the Army)	$885,584	0.1%	Rank history: #85 in FY2021, #96 in FY2022, #53 in FY2023 and not on the FY2024 list; up 44 since FY2024.
92	Kaiva Services, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$883,835	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and not on the FY2024 list; up 151 since FY2024.
93	Dal Media Solutions Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$877,419	0.1%	Rank history: not on the FY2021–FY2024 lists; up 113 since FY2024.
94	Secsol Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$869,503	0.1%	Rank history: #82 in FY2021, #70 in FY2022, not on the FY2023 list and #82 in FY2024; down 12 since FY2024.
95	Communications Resource Inc. Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture)	$864,208	0.1%	Rank history: #47 in FY2021, #46 in FY2022, not on the FY2023 list and #54 in FY2024; down 41 since FY2024.
96	RF Technologies Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$859,571	0.1%	Rank history: not on the FY2021–FY2024 lists; up 348 since FY2024.
97	B W Electric, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) USAF (Department of the Air Force)	$824,683	0.1%	Rank history: not on the FY2021–FY2024 lists; up 244 since FY2024.
98	Bold Technologies Ltd. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$824,056	0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and not on the FY2024 list; up 18 since FY2024.
99	Talon Veteran Services Incorporated Through Talon East Fuel Services LLC Top agencies OSD (Office of the Secretary of Defense)	$776,160	0.1%	Rank history: #95 in FY2021 and not on the FY2022–FY2024 lists; returned.
100	Integrity Protection Systems LLC Top agencies VA (Department of Veterans Affairs)	$768,871	0.1%	Rank history: #75 in FY2021 and not on the FY2022–FY2024 lists; up 12 since FY2024.

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 $820 million 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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