Top 100 Contractors in PSC S: Utilities and Housekeeping, FY2024

Name: Top 100 Contractors in PSC S: Utilities and Housekeeping, FY2024
Creator: GovTribe

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

The top 10 won 21% of FY2024 PSC S contract dollars

Contract obligations: $15,420,718,054 Net of deobligations, by contracts coded PSC S or a code under it
Contractors: 7,400 Parent companies with an obligation
Largest contractor: Amentum Services, Inc. $593 million, 3.7% 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	Amentum Services, Inc. 9 awardees, including PAE Government Services, Inc., Dzsp 21 LLC and Pae-Perini LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOS (Department of State)	$593,433,797	3.7%	Rank history: #4 in FY2021, #2 in FY2022, #7 in FY2023 and not on the FY2025 list; up 6 since FY2023.
2	Metropolitan Security Services, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) GSA (General Services Administration)	$495,016,232	3.0%	Rank history: #6 in FY2021, #11 in FY2022, #6 in FY2023 and #4 in FY2025; up 4 since FY2023.
3	Environmental Chemical Corporation Through ECC Constructors LLC Top agencies Army (Department of the Army)	$477,142,037	2.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 159 since FY2023.
4	The GEO Group, Inc. Top agencies DHS (Department of Homeland Security)	$459,086,420	2.8%	Rank history: #3 in FY2021, #4 in FY2022, #3 in FY2023 and #2 in FY2025; down 1 since FY2023.
5	Securitas Electronic Security Inc. Through Paragon Systems Inc. Top agencies DHS (Department of Homeland Security) NARA (National Archives and Records Administration)	$262,806,461	1.6%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
6	American Water Works Company Inc. 11 awardees, including American Water Operations and Maintenance, LLC, American Water Military Services, LLC and California-American Water Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$246,810,923	1.5%	Rank history: #14 in FY2021, #12 in FY2022, #11 in FY2023 and #11 in FY2025; up 5 since FY2023.
7	Omniplex World Services Corp Through Triple Canopy Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$236,767,835	1.5%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023 and not on the FY2025 list; down 2 since FY2023.
8	Securitas AB 3 awardees, including Paragon Systems Inc. Top agencies DHS (Department of Homeland Security) NARA (National Archives and Records Administration)	$235,849,163	1.5%	Rank history: #2 in FY2021, #3 in FY2022, #1 in FY2023 and not on the FY2025 list; down 7 since FY2023.
9	Mvm, Inc. Top agencies DHS (Department of Homeland Security)	$214,490,000	1.3%	Rank history: #20 in FY2021, #9 in FY2022, #9 in FY2023 and #15 in FY2025; unchanged since FY2023.
10	Corecivic, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$202,704,710	1.2%	Rank history: #13 in FY2021, #15 in FY2022, #12 in FY2023 and #6 in FY2025; up 2 since FY2023.
11	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$199,039,911	1.2%	Rank history: #9 in FY2021, #13 in FY2022, #8 in FY2023 and #10 in FY2025; down 3 since FY2023.
12	L3Harris Technologies, Inc. Through Harris Corporation Top agencies DOT (Department of Transportation)	$165,614,384	1.0%	Rank history: #17 in FY2021, #22 in FY2022, #16 in FY2023 and #13 in FY2025; up 4 since FY2023.
13	Covenant Aviation Security LLC Top agencies DHS (Department of Homeland Security)	$156,017,437	1.0%	Rank history: #23 in FY2021, #21 in FY2022, #17 in FY2023 and #18 in FY2025; up 4 since FY2023.
14	Triple Canopy Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) USAF (Department of the Air Force)	$140,681,267	0.9%	Rank history: #1 in FY2021, #1 in FY2022, #4 in FY2023 and #7 in FY2025; down 10 since FY2023.
15	KBR Wyle Services LLC Through KBR Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$140,324,900	0.9%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
16	Skookum Educational Programs Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$134,478,622	0.8%	Rank history: #49 in FY2021, #48 in FY2022, #38 in FY2023 and #20 in FY2025; up 22 since FY2023.
17	Pride Industries Top agencies USAF (Department of the Air Force) Army (Department of the Army) Treasury (Department of the Treasury)	$124,493,439	0.8%	Rank history: #21 in FY2021, #25 in FY2022, #18 in FY2023 and #19 in FY2025; up 1 since FY2023.
18	Pond Security Service GMBH Top agencies Army (Department of the Army) DOS (Department of State) DECA (Defense Commissary Agency)	$120,184,862	0.7%	Rank history: #22 in FY2021, #19 in FY2022, #20 in FY2023 and #24 in FY2025; up 2 since FY2023.
19	Potomac Electric Power Co Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security)	$115,633,717	0.7%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
20	Arctic Slope Regional Corporation 3 awardees, including Asrc Communications, Ltd., Arctec Alaska JV and Asrc Federal Field Services, LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$109,744,626	0.7%	Rank history: #19 in FY2021, #20 in FY2022, #15 in FY2023 and #14 in FY2025; down 5 since FY2023.
21	Professional Contract Services, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) DHS (Department of Homeland Security)	$108,798,632	0.7%	Rank history: #26 in FY2021, #26 in FY2022, #32 in FY2023 and #29 in FY2025; up 11 since FY2023.
22	Kerberos International Inc. 2 awardees, including Acadia Protective Services II, LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$107,596,682	0.7%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #26 in FY2025; up 19 since FY2023.
23	Dominion Resources Inc. 14 awardees, including Dominion Privatization Texas, LLC, Virginia Electric and Power Company and Dominion Privatization Virginia, LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) DOJ (Department of Justice)	$102,361,427	0.6%	Rank history: #32 in FY2021, #18 in FY2022, #24 in FY2023 and #21 in FY2025; up 1 since FY2023.
24	Fort Bliss Water Services Company 6 awardees, including Old North Utility Services, Inc., American States Utility Services Inc. and Old Dominion Utility Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$100,431,564	0.6%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; up 110 since FY2023.
25	Doyon Utilities LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$98,013,744	0.6%	Rank history: #28 in FY2021, #24 in FY2022, #26 in FY2023 and not on the FY2025 list; up 1 since FY2023.
26	Amentum Holdings, Inc. 5 awardees, including PAE Government Services, Inc., Amentum Spaceport LLC and Amentum Services, Inc. Top agencies DOS (Department of State) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$93,272,402	0.6%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
27	Centerra Group, LLC Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) DOI (Department of the Interior)	$91,583,693	0.6%	Rank history: #64 in FY2021, not on the FY2022–FY2023 lists and #43 in FY2025; returned.
28	Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) HHS (Department of Health and Human Services)	$89,756,020	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
29	Akima Global Services, LLC Top agencies DHS (Department of Homeland Security)	$89,232,971	0.5%	Rank history: not on the FY2021 list, #86 in FY2022, not on the FY2023 list and #52 in FY2025; up 85 since FY2023.
30	Amber Infrastructure LLC 6 awardees, including City Light & Power Awp, LLC, City Light & Power Aberdeen, LLC and City Light & Power Jblm LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$85,589,961	0.5%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
31	Paragon Professional Services LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$83,141,869	0.5%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #31 in FY2025; unchanged since FY2023.
32	Global Connections To Employment, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$82,586,562	0.5%	Rank history: #33 in FY2021, #29 in FY2022, #30 in FY2023 and #33 in FY2025; down 2 since FY2023.
33	WGL Energy Services Inc. 5 awardees, including Washington Gas Light Company and Semco Energy, Inc. Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$82,092,366	0.5%	Rank history: #42 in FY2021, #33 in FY2022, #25 in FY2023 and #40 in FY2025; down 8 since FY2023.
34	Vendtech-Sgi LLC Top agencies DHS (Department of Homeland Security)	$81,394,718	0.5%	Rank history: #35 in FY2021, #36 in FY2022, #34 in FY2023 and #42 in FY2025; unchanged since FY2023.
35	Nana Regional Corporation Inc 5 awardees, including Akima Global Services, LLC, Akima Intra-Data, LLC and Akima Centerra Integrated Services LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) AOUSC (Administrative Office of the U.S. Courts)	$78,550,934	0.5%	Rank history: #10 in FY2021, #23 in FY2022, #14 in FY2023 and #36 in FY2025; down 21 since FY2023.
36	Tiya Services L.L.C. Top agencies Army (Department of the Army)	$72,130,138	0.4%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; up 83 since FY2023.
37	J & J Maintenance Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$70,663,972	0.4%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
38	Didlake Inc. Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service) Commerce (Department of Commerce)	$69,066,018	0.4%	Rank history: #40 in FY2021, #30 in FY2022, #44 in FY2023 and #49 in FY2025; up 6 since FY2023.
39	Vectrus Systems Corporation 2 awardees, including V2X Systems LLC and Vectrus-J&J Facilities Support, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$65,767,325	0.4%	Rank history: #12 in FY2021, #10 in FY2022, #10 in FY2023 and not on the FY2025 list; down 29 since FY2023.
40	Melwood Horticultural Training Center, Inc. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) DOJ (Department of Justice)	$63,300,267	0.4%	Rank history: #30 in FY2021, #44 in FY2022, #49 in FY2023 and #53 in FY2025; up 9 since FY2023.
41	BC Partners LLP Through Gardaworld Federal Services LLC Top agencies Army (Department of the Army)	$63,294,100	0.4%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.
42	KBR Diego Garcia, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$60,688,301	0.4%	Rank history: #38 in FY2021, #50 in FY2022, #40 in FY2023 and #57 in FY2025; down 2 since FY2023.
43	Pacific Gas and Electric Company Top agencies DOI (Department of the Interior) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$59,797,244	0.4%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
44	Servicesource Inc. Top agencies WHS (DOD Washington Headquarters Service) DOJ (Department of Justice) Army (Department of the Army)	$59,049,569	0.4%	Rank history: #99 in FY2021, #31 in FY2022, #47 in FY2023 and #48 in FY2025; up 3 since FY2023.
45	V2X, Inc. 3 awardees, including V2X Systems LLC and Advantor Systems II LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$57,460,828	0.4%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
46	Exelon Corporation 7 awardees, including Potomac Electric Power Co, Constellation Newenergy, Inc. and Baltimore Gas and Electric Company Top agencies HHS (Department of Health and Human Services) Smithsonian (Smithsonian Institution) VA (Department of Veterans Affairs)	$56,058,037	0.3%	Rank history: #15 in FY2021, #28 in FY2022, #22 in FY2023 and not on the FY2025 list; down 24 since FY2023.
47	CDA Incorporated Top agencies DHS (Department of Homeland Security)	$55,029,165	0.3%	Rank history: #53 in FY2021, #57 in FY2022, #85 in FY2023 and #39 in FY2025; up 38 since FY2023.
48	Bradley Technologies Inc. Top agencies DHS (Department of Homeland Security) CFTC (Commodity Futures Trading Commission)	$53,423,415	0.3%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #41 in FY2025; up 48 since FY2023.
49	Amentum Technology, Inc. Top agencies Navy (Department of the Navy)	$52,505,713	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Water Authority Busan Metropolitan City Korea 7 awardees, including Korea Electric Power Corporation, Daegu Metropolitan City and Headquarters, Daegu Waterworks Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$52,391,174	0.3%	Rank history: #50 in FY2021, #66 in FY2022, #42 in FY2023 and #90 in FY2025; down 8 since FY2023.
51	G4S Secure Integration LLC Top agencies DOS (Department of State)	$52,058,101	0.3%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; up 155 since FY2023.
52	Akima Infrastructure Protection LLC Top agencies DHS (Department of Homeland Security)	$49,661,470	0.3%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #16 in FY2025; up 36 since FY2023.
53	Amentum Spaceport LLC Top agencies NASA (National Aeronautics and Space Administration)	$49,058,075	0.3%	Rank history: #29 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
54	Universal Protection GP, LLC 2 awardees, including Universal Protection Service, Limited Partnership and Universal Protection Service, LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) Smithsonian (Smithsonian Institution)	$48,180,394	0.3%	Rank history: #58 in FY2021, #49 in FY2022, #28 in FY2023 and not on the FY2025 list; down 26 since FY2023.
55	Universal Protection Service, Limited Partnership Top agencies DHS (Department of Homeland Security) Smithsonian (Smithsonian Institution) DOS (Department of State)	$48,119,776	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
56	Chugach Alaska Corporation 5 awardees, including Defense Base Services, LLC, Chugach Solutions Enterprise, LLC and Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$47,571,324	0.3%	Rank history: #31 in FY2021, #35 in FY2022, #36 in FY2023 and not on the FY2025 list; down 20 since FY2023.
57	Dsc-Emi Maintenance Solutions, LLC Top agencies Navy (Department of the Navy) DODEA (Department of Defense Education Activity)	$46,974,318	0.3%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and #64 in FY2025; up 15 since FY2023.
58	Job Options, Incorporated Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) DECA (Defense Commissary Agency)	$46,723,285	0.3%	Rank history: #48 in FY2021, #61 in FY2022, #46 in FY2023 and #67 in FY2025; down 12 since FY2023.
59	Readiness Management Support LC Top agencies USAF (Department of the Air Force)	$46,214,674	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
60	G4S Secure Solutions (USA) Inc. Top agencies DHS (Department of Homeland Security) DOE (Department of Energy)	$46,024,243	0.3%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
61	American Electric Power Company, Inc. 3 awardees, including AEP Energy Inc. and AEP Texas Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) DOJ (Department of Justice)	$46,011,959	0.3%	Rank history: not on the FY2021 list, #91 in FY2022, #43 in FY2023 and not on the FY2025 list; down 18 since FY2023.
62	Texas Workforce Commission Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$45,303,175	0.3%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
63	Management & Training Corporation Top agencies DHS (Department of Homeland Security)	$44,473,943	0.3%	Rank history: #66 in FY2021, #67 in FY2022, #56 in FY2023 and #60 in FY2025; down 7 since FY2023.
64	KBR Services LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$44,466,960	0.3%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and not on the FY2025 list; down 43 since FY2023.
65	WE2 Support Services 8A JV LLC Top agencies DOE (Department of Energy)	$44,059,361	0.3%	Rank history: #62 in FY2021, #70 in FY2022, #50 in FY2023 and not on the FY2025 list; down 15 since FY2023.
66	Valiant Technical Services Inc. Top agencies DLA (Defense Logistics Agency)	$43,819,621	0.3%	Rank history: #55 in FY2021, not on the FY2022–FY2023 lists and #62 in FY2025; returned.
67	G4S Holding One Inc. 7 awardees, including G4S Secure Integration LLC, G4S Secure Solutions (USA) Inc. and G4S (Rdc) Top agencies DOS (Department of State) DHS (Department of Homeland Security) DOE (Department of Energy)	$43,491,982	0.3%	Rank history: #8 in FY2021, #16 in FY2022, #13 in FY2023 and not on the FY2025 list; down 54 since FY2023.
68	Chugach Logistics and Facility Services JV, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$43,332,809	0.3%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; up 355 since FY2023.
69	Akima Facilities Operations LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$43,258,500	0.3%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and #59 in FY2025; down 6 since FY2023.
70	Keenan FT Detrick Energy LLC Top agencies Army (Department of the Army)	$42,730,544	0.3%	Rank history: #56 in FY2021, #63 in FY2022, #75 in FY2023 and #66 in FY2025; up 5 since FY2023.
71	Georgia Power Company 6 awardees, including Alabama Power Company, Southern Company Gas and Mississippi Power Co Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$42,416,910	0.3%	Rank history: #89 in FY2021, #45 in FY2022, #66 in FY2023 and #61 in FY2025; down 5 since FY2023.
72	Asrc Federal Field Services, LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$42,044,260	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Swift & Staley Inc. Top agencies DOE (Department of Energy)	$41,995,927	0.3%	Rank history: #78 in FY2021, #58 in FY2022, #79 in FY2023 and #98 in FY2025; up 6 since FY2023.
74	Pegasus Support Services LLC Top agencies Army (Department of the Army)	$41,895,277	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Fedcap Rehabilitation Services, Inc. 2 awardees Top agencies GSA (General Services Administration) SSA (Social Security Administration) DOI (Department of the Interior)	$41,147,525	0.3%	Rank history: #96 in FY2021, #83 in FY2022, #59 in FY2023 and #58 in FY2025; down 16 since FY2023.
76	Centrica PLC 2 awardees, including Direct Energy Business LLC and NRG Business Marketing LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOT (Department of Transportation)	$41,073,525	0.3%	Rank history: #68 in FY2021, not on the FY2022 list, #81 in FY2023 and not on the FY2025 list; up 5 since FY2023.
77	CW Resources, Inc. Top agencies DECA (Defense Commissary Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$40,877,162	0.3%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
78	North American Security, Incorporated Top agencies DHS (Department of Homeland Security)	$40,462,313	0.2%	Rank history: #61 in FY2021, #73 in FY2022, #71 in FY2023 and #92 in FY2025; down 7 since FY2023.
79	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. and Black Warrior Electric Membership Corporation Top agencies DOT (Department of Transportation) Army (Department of the Army)	$39,267,531	0.2%	Rank history: #94 in FY2021, not on the FY2022–FY2023 lists and #99 in FY2025; up 27 since FY2023.
80	The Chenega Corporation 5 awardees, including Chenega Global Protection, LLC, Chenega Reliable Services LLC and Chenega Tri-Services, LLC Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$38,814,850	0.2%	Rank history: #59 in FY2021, #41 in FY2022, #23 in FY2023 and not on the FY2025 list; down 57 since FY2023.
81	Coastal Enterprises of Jacksonville Inc. Top agencies Navy (Department of the Navy) DECA (Defense Commissary Agency) Army (Department of the Army)	$38,079,761	0.2%	Rank history: not on the FY2021 list, #97 in FY2022, #54 in FY2023 and #87 in FY2025; down 27 since FY2023.
82	Kr-Mtac LLC Top agencies DHS (Department of Homeland Security)	$37,413,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; up 45 since FY2023.
83	VMD Systems Integrators Inc Top agencies DHS (Department of Homeland Security)	$36,876,322	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #78 in FY2025; down 7 since FY2023.
84	Trace Inc. Top agencies DECA (Defense Commissary Agency) USAF (Department of the Air Force) Commerce (Department of Commerce)	$34,497,242	0.2%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; new.
85	Huntsville Rehabilitation Foundation Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency) DOJ (Department of Justice)	$33,855,136	0.2%	Rank history: #79 in FY2021, #77 in FY2022, #64 in FY2023 and #84 in FY2025; down 21 since FY2023.
86	Dzsp 21 LLC Top agencies Navy (Department of the Navy)	$31,755,423	0.2%	Rank history: #25 in FY2021, #27 in FY2022, #19 in FY2023 and not on the FY2025 list; down 67 since FY2023.
87	Chenega Base & Logistics Services LLC Top agencies Army (Department of the Army)	$31,069,255	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 86 since FY2023.
88	Chimes International, Ltd. Through Chimes District of Columbia Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) Commerce (Department of Commerce)	$30,897,049	0.2%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
89	Jacobs Government Services Company 2 awardees, including Ch2M Hill Constructors, Inc. Top agencies Army (Department of the Army)	$30,570,168	0.2%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; up 94 since FY2023.
90	Valiant Integrated Services LLC 2 awardees, including Valiant Government Services LLC and Valiant / Alca JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DECA (Defense Commissary Agency)	$30,145,830	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #74 in FY2023 and #80 in FY2025; down 16 since FY2023.
91	Alutiiq Information Management, LLC Top agencies DOS (Department of State)	$29,992,872	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Aqua Engineers Inc. Top agencies Army (Department of the Army)	$29,356,065	0.2%	Rank history: #88 in FY2021, #88 in FY2022, #93 in FY2023 and not on the FY2025 list; up 1 since FY2023.
93	Patronus Systems Inc Top agencies DHS (Department of Homeland Security)	$29,035,501	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 32 since FY2023.
94	Bering Straits Professional Services, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$28,998,384	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
95	Hana Industries, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$28,734,920	0.2%	Rank history: #70 in FY2021, #82 in FY2022, #80 in FY2023 and #83 in FY2025; down 15 since FY2023.
96	Fort Riley Utility Services, Inc. Top agencies Army (Department of the Army)	$27,721,270	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 22 since FY2023.
97	Inter-CON Security Systems Inc. Top agencies DOS (Department of State) DOI (Department of the Interior) NARA (National Archives and Records Administration)	$27,688,972	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
98	Old North Utility Services Inc. 5 awardees, including Terrapin Utility Services, Inc., Old Dominion Utility Services, Inc. and Palmetto State Utility Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$27,507,079	0.2%	Rank history: #36 in FY2021, #32 in FY2022, #37 in FY2023 and not on the FY2025 list; down 61 since FY2023.
99	Golden Svcs, LLC Top agencies DHS (Department of Homeland Security)	$27,190,958	0.2%	Rank history: #43 in FY2021, #52 in FY2022, #87 in FY2023 and #82 in FY2025; down 12 since FY2023.
100	Synergy Logistics Services, LLC 2 awardees, including Synergy Logistics Services II LLC Top agencies DLA (Defense Logistics Agency)	$26,680,211	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 375 since FY2023.

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100 of 7,400 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC S

Code	Net obligations	Largest contractor
S2 Housekeeping Services	$12,578,289,607	Amentum Services, Inc.
S1 Utilities	$2,842,428,446	American Water Works Company Inc.

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 $16.2 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 PSC S contractors in FY2024?

1. Amentum Services, Inc. ($593M), 2. Metropolitan Security Services, Inc. ($495M), 3. Environmental Chemical Corporation ($477M), 4. The GEO Group, Inc. ($459M), 5. Securitas Electronic Security Inc. ($263M), 6. American Water Works Company Inc. ($247M), 7. Omniplex World Services Corp ($237M), 8. Securitas AB ($236M), 9. Mvm, Inc. ($214M), 10. Corecivic, Inc. ($203M).

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