Top 100 Contractors in PSC DF01: IT and Telecom – IT Management Support Services (Labor), FY2025

Name: Top 100 Contractors in PSC DF01: IT and Telecom – IT Management Support Services (Labor), FY2025
Creator: GovTribe

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

The top 10 won 43% of FY2025 PSC DF01 contract dollars

Contract obligations: $4,773,721,676 Net of deobligations, by contracts coded PSC DF01
Contractors: 605 Parent companies with an obligation
Largest contractor: Deloitte $735 million, 14.4% 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	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top agencies Army (Department of the Army) DHRA (Defense Human Resources Activity) Treasury (Department of the Treasury)	$734,672,730	14.4%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2024; up 1 since FY2024.
2	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. and Leidos Digital Solutions Inc. Top agencies SSA (Social Security Administration) DTRA (Defense Threat Reduction Agency) HHS (Department of Health and Human Services)	$351,325,133	6.9%	Rank history: #18 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; down 1 since FY2024.
3	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DOJ (Department of Justice)	$269,191,501	5.3%	Rank history: #6 in FY2021, #3 in FY2022, #2 in FY2023 and #3 in FY2024; unchanged since FY2024.
4	Accenture Federal Services LLC Top agencies DOE (Department of Energy) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$207,587,715	4.1%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; unchanged since FY2024.
5	CACI International Inc. 3 awardees, including Caci, Inc. - Federal, Caci Enterprise Solutions, LLC and Caci Nss, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$127,016,827	2.5%	Rank history: #7 in FY2021, #11 in FY2022, #3 in FY2023 and #6 in FY2024; up 1 since FY2024.
6	Peraton Inc. Top agencies DOS (Department of State) DHRA (Defense Human Resources Activity) DLA (Defense Logistics Agency)	$126,859,474	2.5%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2024; down 1 since FY2024.
7	Science Applications International Corporation 2 awardees Top agencies DHS (Department of Homeland Security) PBGC (Pension Benefit Guaranty Corporation) GAO (Government Accountability Office)	$113,414,428	2.2%	Rank history: #2 in FY2021, #6 in FY2022, #7 in FY2023 and #8 in FY2024; up 1 since FY2024.
8	CGI Federal Inc. Top agencies DOJ (Department of Justice) SSA (Social Security Administration) DHS (Department of Homeland Security)	$87,995,633	1.7%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; up 12 since FY2024.
9	Salient Crgt, Inc. Top agencies VA (Department of Veterans Affairs) DCSA (Defense Counterintelligence and Security Agency) GAO (Government Accountability Office)	$84,371,077	1.7%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; unchanged since FY2024.
10	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$74,728,920	1.5%	Rank history: not on the FY2021 list, #5 in FY2022, #5 in FY2023 and #7 in FY2024; down 3 since FY2024.
11	Ernst & Young LLP 2 awardees, including Dignari, LLC Top agencies DHS (Department of Homeland Security) HUD (Department of Housing and Urban Development) ED (Department of Education)	$70,689,553	1.4%	Rank history: not on the FY2021–FY2024 lists; new.
12	Akumen, Inc. Top agencies DOS (Department of State)	$58,308,814	1.1%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 12 since FY2024.
13	Esimplicity Inc. Top agencies HHS (Department of Health and Human Services)	$56,912,980	1.1%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; down 3 since FY2024.
14	Arctic Slope Regional Corporation 7 awardees, including Asrc Federal Technology Solutions, LLC, Broadleaf, Inc. and Agile Decision Sciences, LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture) USAF (Department of the Air Force)	$55,079,339	1.1%	Rank history: #63 in FY2021, not on the FY2022–FY2023 lists and #15 in FY2024; up 1 since FY2024.
15	Stratascor, LLC Top agencies Navy (Department of the Navy)	$52,314,800	1.0%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 2 since FY2024.
16	Caci Enterprise Solutions LLC Top agencies Navy (Department of the Navy)	$48,129,467	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
17	Credence Management Solutions Limited Liability Company Top agencies DLA (Defense Logistics Agency)	$45,110,968	0.9%	Rank history: #23 in FY2021, #18 in FY2022, #18 in FY2023 and #22 in FY2024; up 5 since FY2024.
18	Sev1Tech, LLC Top agencies DHS (Department of Homeland Security)	$43,021,580	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
19	CSA Global LLC Top agencies Navy (Department of the Navy)	$38,535,559	0.8%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; up 18 since FY2024.
20	Asgn Incorporated Through ECS Federal, LLC Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$37,005,996	0.7%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 1 since FY2024.
21	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. and Iron Eaglex, Inc. Top agencies CNCS (Corporation for National and Community Service) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$35,392,672	0.7%	Rank history: #14 in FY2021, #15 in FY2022, #10 in FY2023 and #18 in FY2024; down 3 since FY2024.
22	Teamstaff Inc. Through Dlh, LLC Top agencies HHS (Department of Health and Human Services)	$35,184,661	0.7%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #16 in FY2024; down 6 since FY2024.
23	Compass Point LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) DOJ (Department of Justice)	$32,494,195	0.6%	Rank history: #56 in FY2021, #20 in FY2022, #15 in FY2023 and #17 in FY2024; down 6 since FY2024.
24	22Nd Century Technologies, Inc. Top agencies Navy (Department of the Navy)	$31,880,596	0.6%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024 list; returned.
25	Koniag It Systems, LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$31,339,557	0.6%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #76 in FY2024; up 51 since FY2024.
26	Logistics Systems Incorporated Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$29,425,993	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 1 since FY2024.
27	It Partners, Inc. Top agencies DLA (Defense Logistics Agency)	$28,241,573	0.6%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2024; up 27 since FY2024.
28	Nationwide It Services Inc. Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$26,220,494	0.5%	Rank history: #45 in FY2021, #83 in FY2022, #31 in FY2023 and #26 in FY2024; down 2 since FY2024.
29	Xpect Solutions LLC Top agencies DOJ (Department of Justice)	$24,967,625	0.5%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; up 45 since FY2024.
30	By Light Professional It Services LLC Top agencies VA (Department of Veterans Affairs)	$24,800,126	0.5%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; down 16 since FY2024.
31	Amentum Holdings, Inc. 2 awardees, including Amentum Technology, Inc. Top agencies DOJ (Department of Justice)	$24,798,020	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
32	Microsoft Corporation Top agencies DOS (Department of State) Navy (Department of the Navy)	$24,572,738	0.5%	Rank history: #33 in FY2021, #51 in FY2022, #62 in FY2023 and not on the FY2024 list; up 309 since FY2024.
33	Idera Inc. Through Precise Software Solutions, Inc. Top agencies HHS (Department of Health and Human Services) DOL (Department of Labor) Treasury (Department of the Treasury)	$23,889,275	0.5%	Rank history: #26 in FY2021, #25 in FY2022, #32 in FY2023 and #27 in FY2024; down 6 since FY2024.
34	Agile Defense, LLC Top agencies Army (Department of the Army)	$23,416,352	0.5%	Rank history: #64 in FY2021, #22 in FY2022, #35 in FY2023 and not on the FY2024 list; returned.
35	Research Management Consultants Inc. Top agencies OPM (Office of Personnel Management)	$22,684,990	0.4%	Rank history: not on the FY2021–FY2024 lists; up 242 since FY2024.
36	BMA Technical Services, Inc. Top agencies DLA (Defense Logistics Agency)	$21,886,083	0.4%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #28 in FY2024; down 8 since FY2024.
37	Innovasystems International LLC Top agencies Navy (Department of the Navy)	$21,456,503	0.4%	Rank history: not on the FY2021 list, #19 in FY2022, #21 in FY2023 and #31 in FY2024; down 6 since FY2024.
38	Resource Management Concepts, Inc. Top agencies Navy (Department of the Navy)	$21,234,358	0.4%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #52 in FY2024; up 14 since FY2024.
39	At-Impact LLC Top agencies USDA (Department of Agriculture) Treasury (Department of the Treasury)	$20,356,873	0.4%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and #42 in FY2024; up 3 since FY2024.
40	Definitive Logic Corporation Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$19,877,039	0.4%	Rank history: #100 in FY2021 and not on the FY2022–FY2024 lists; up 81 since FY2024.
41	Maximus Federal Services, Inc. Top agencies DOE (Department of Energy)	$19,645,379	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
42	Koniag Professional Services, LLC Top agencies HHS (Department of Health and Human Services) DISA (Defense Information Systems Agency)	$19,262,033	0.4%	Rank history: not on the FY2021–FY2024 lists; up 309 since FY2024.
43	Nakupuna Solutions, LLC Top agencies Navy (Department of the Navy)	$18,832,075	0.4%	Rank history: not on the FY2021 list, #50 in FY2022, #36 in FY2023 and #44 in FY2024; up 1 since FY2024.
44	Information Technology Strategies, Inc. Top agencies DLA (Defense Logistics Agency)	$18,783,207	0.4%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #58 in FY2024; up 14 since FY2024.
45	Semanticbits LLC 2 awardees, including ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$18,712,316	0.4%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 15 since FY2024.
46	Tatitlek Government Services, LLC Top agencies Treasury (Department of the Treasury)	$18,672,883	0.4%	Rank history: not on the FY2021–FY2024 lists; up 106 since FY2024.
47	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies Army (Department of the Army)	$18,135,741	0.4%	Rank history: #4 in FY2021, #13 in FY2022, #20 in FY2023 and #30 in FY2024; down 17 since FY2024.
48	Great Hill Solutions, LLC Top agencies DOS (Department of State) USDA (Department of Agriculture)	$18,132,652	0.4%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2024; up 44 since FY2024.
49	New River Systems Corporation Top agencies DLA (Defense Logistics Agency)	$17,378,206	0.3%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and #29 in FY2024; down 20 since FY2024.
50	Improvix Technologies Inc. Top agencies DOS (Department of State)	$17,276,233	0.3%	Rank history: not on the FY2021–FY2024 lists; up 295 since FY2024.
51	Tantus Technologies Inc. Through Sikich Federal Inc. Top agencies Treasury (Department of the Treasury) DOT (Department of Transportation) USDA (Department of Agriculture)	$17,134,388	0.3%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; down 2 since FY2024.
52	Samtek Inc. Top agencies HHS (Department of Health and Human Services)	$16,574,297	0.3%	Rank history: not on the FY2021 list, #47 in FY2022, #67 in FY2023 and not on the FY2024 list; up 106 since FY2024.
53	Sohum Systems LLC Top agencies USDA (Department of Agriculture)	$16,351,834	0.3%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2024 list; returned.
54	Relx Inc. 2 awardees, including Accuity Asset Verification Services Inc. Top agencies SSA (Social Security Administration) DOS (Department of State)	$15,561,118	0.3%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; up 5 since FY2024.
55	Epsilon Inc Top agencies DOE (Department of Energy)	$14,824,989	0.3%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and #51 in FY2024; down 4 since FY2024.
56	Chronos Operations LLC Top agencies Army (Department of the Army)	$14,757,039	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
57	Optima Government Solutions LLC Top agencies USAF (Department of the Air Force)	$14,741,026	0.3%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and #55 in FY2024; down 2 since FY2024.
58	JBW Feditc JV LLC Top agencies USAF (Department of the Air Force)	$13,989,539	0.3%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; down 12 since FY2024.
59	Skyward It Solutions, LLC Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$13,917,807	0.3%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; up 20 since FY2024.
60	ManTech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Unison Software Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOT (Department of Transportation)	$13,730,540	0.3%	Rank history: not on the FY2021–FY2024 lists; up 163 since FY2024.
61	Bowhead Cybersecurity Solutions & Services, LLC Top agencies Navy (Department of the Navy)	$13,717,869	0.3%	Rank history: #88 in FY2021 and not on the FY2022–FY2024 lists; up 93 since FY2024.
62	Koniag, Inc. Through Kadiak LLC Top agencies Army (Department of the Army)	$13,605,365	0.3%	Rank history: #38 in FY2021, #59 in FY2022, #91 in FY2023 and not on the FY2024 list; returned.
63	Inserso Corporation Top agencies DHS (Department of Homeland Security)	$13,541,476	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #47 in FY2024; down 16 since FY2024.
64	Unity Technologies Corp Top agencies DLA (Defense Logistics Agency)	$13,415,241	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
65	Attain Consulting Group LLC Through Maximus Federal Technology Solutions, LLC Top agencies DOE (Department of Energy) EPA (Environmental Protection Agency)	$13,051,287	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 33 since FY2024.
66	Stellar Innovations & Solutions Inc. Top agencies DLA (Defense Logistics Agency)	$12,907,465	0.3%	Rank history: not on the FY2021–FY2024 lists; up 132 since FY2024.
67	Silosmashers, Inc. Top agencies DHS (Department of Homeland Security)	$12,708,595	0.2%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and #82 in FY2024; up 15 since FY2024.
68	Electrosoft Services Inc. Top agencies DLA (Defense Logistics Agency)	$12,482,871	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #68 in FY2024; unchanged since FY2024.
69	Intellect Solutions, LLC Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury)	$12,263,224	0.2%	Rank history: not on the FY2021–FY2024 lists; up 41 since FY2024.
70	Yahya Technologies LLC Top agencies DLA (Defense Logistics Agency)	$12,173,427	0.2%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; down 3 since FY2024.
71	Nimbus Consulting LLC Top agencies HHS (Department of Health and Human Services)	$12,058,917	0.2%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; down 10 since FY2024.
72	Phoenix Oversight Group LLC Top agencies USDA (Department of Agriculture)	$11,545,050	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and #69 in FY2024; down 3 since FY2024.
73	Bellese Technologies LLC Top agencies HHS (Department of Health and Human Services)	$11,423,648	0.2%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and #33 in FY2024; down 40 since FY2024.
74	V3Gate, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$11,290,861	0.2%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2023–FY2024 lists; up 112 since FY2024.
75	Beat LLC Through Business Enabled Acquisition and Technology, Inc. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$11,270,211	0.2%	Rank history: not on the FY2021–FY2024 lists; up 33 since FY2024.
76	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$11,212,216	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
77	AGILE5 Technologies Inc Top agencies GSA (General Services Administration)	$11,068,155	0.2%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #75 in FY2024; down 2 since FY2024.
78	Cherokee Nation Integrated Health, L.L.C. Top agencies DOI (Department of the Interior) DHA (Defense Health Agency)	$10,489,816	0.2%	Rank history: not on the FY2021–FY2024 lists; up 86 since FY2024.
79	Innovative Management Concepts, Inc. Top agencies USAF (Department of the Air Force)	$10,470,957	0.2%	Rank history: #27 in FY2021, #64 in FY2022, #43 in FY2023 and #87 in FY2024; up 8 since FY2024.
80	Coggins International Corp Top agencies DLA (Defense Logistics Agency)	$10,395,694	0.2%	Rank history: #72 in FY2021, #99 in FY2022, not on the FY2023 list and #96 in FY2024; up 16 since FY2024.
81	Lawelawe Technology Services, Inc. Top agencies DHA (Defense Health Agency)	$10,386,670	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, #66 in FY2023 and #80 in FY2024; down 1 since FY2024.
82	Chickasaw Strategic Pointe, LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$10,333,271	0.2%	Rank history: not on the FY2021 list, #56 in FY2022, #80 in FY2023 and #77 in FY2024; down 5 since FY2024.
83	Directviz Solutions, LLC Top agencies Army (Department of the Army)	$10,248,443	0.2%	Rank history: #54 in FY2021, #39 in FY2022, #59 in FY2023 and #78 in FY2024; down 5 since FY2024.
84	Arlluk Technology Solutions LLC Top agencies USDA (Department of Agriculture) DOL (Department of Labor)	$10,235,023	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; up 4 since FY2024.
85	It Concepts, Inc. Top agencies DHA (Defense Health Agency) SSA (Social Security Administration)	$10,175,589	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
86	Nexgen Technologies Inc. Top agencies DOI (Department of the Interior)	$10,109,569	0.2%	Rank history: #48 in FY2021, #28 in FY2022, #45 in FY2023 and #65 in FY2024; down 21 since FY2024.
87	DRT Strategies, Inc. Top agencies HHS (Department of Health and Human Services)	$10,064,517	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and not on the FY2024 list; up 42 since FY2024.
88	ABT Global LLC Through Technology Solutions Provider, LLC Top agencies USDA (Department of Agriculture)	$9,894,327	0.2%	Rank history: not on the FY2021–FY2024 lists; up 375 since FY2024.
89	Ondaro LLC Top agencies USDA (Department of Agriculture) Smithsonian (Smithsonian Institution)	$8,956,621	0.2%	Rank history: not on the FY2021–FY2023 lists and #95 in FY2024; up 6 since FY2024.
90	Foxhole Technology LLC Top agencies DOT (Department of Transportation)	$8,824,434	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2024 list; up 21 since FY2024.
91	Koniag Emerging Technologies LLC Top agencies DOS (Department of State)	$8,600,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
92	Riva Solutions Inc Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$8,540,251	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; down 21 since FY2024.
93	Teksynap Corporation Top agencies NRC (Nuclear Regulatory Commission) DFC (International Development Finance Corporation) USAF (Department of the Air Force)	$8,363,977	0.2%	Rank history: #55 in FY2021, #31 in FY2022, #24 in FY2023 and #53 in FY2024; down 40 since FY2024.
94	JSI Telecom Inc. Top agencies DOJ (Department of Justice)	$8,360,610	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
95	Derivative LLC Top agencies Treasury (Department of the Treasury)	$8,150,436	0.2%	Rank history: #98 in FY2021, #77 in FY2022 and not on the FY2023–FY2024 lists; up 172 since FY2024.
96	American Systems Corporation Top agencies DSCA (Defense Security Cooperation Agency)	$8,097,575	0.2%	Rank history: not on the FY2021 list, #61 in FY2022, #82 in FY2023 and not on the FY2024 list; up 8 since FY2024.
97	United Solutions, LLC Top agencies DOS (Department of State)	$8,076,633	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
98	Tetra Tech, Inc. 3 awardees, including Amyx Inc., Advanced Management Technology, Inc. and Global TECH Inc. Top agencies DLA (Defense Logistics Agency) DOL (Department of Labor) FTC (Federal Trade Commission)	$7,971,799	0.2%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; down 15 since FY2024.
99	KIK Technologies LLC Top agencies DOT (Department of Transportation)	$7,746,272	0.2%	Rank history: not on the FY2021–FY2024 lists; up 7 since FY2024.
100	Changeis, Inc. Top agencies DHS (Department of Homeland Security)	$7,671,477	0.2%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2023–FY2024 lists; up 12 since FY2024.

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100 of 605 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 $5.11 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 PSC DF01 contractors in FY2025?

1. Deloitte ($735M), 2. Leidos Holdings, Inc. ($351M), 3. Booz Allen Hamilton Holding Corporation ($269M), 4. Accenture Federal Services LLC ($208M), 5. CACI International Inc. ($127M), 6. Peraton Inc. ($127M), 7. Science Applications International Corporation ($113M), 8. CGI Federal Inc. ($88M), 9. Salient Crgt, Inc. ($84.4M), 10. Govcio, LLC ($74.7M).

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