Top 100 Contractors in PSC DD01: IT and Telecom – Service Delivery Support Services: ITSM, Operations Center, Project/PM (Labor), FY2023

Name: Top 100 Contractors in PSC DD01: IT and Telecom – Service Delivery Support Services: ITSM, Operations Center, Project/PM (Labor), FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 47% of FY2023 PSC DD01 contract dollars

Contract obligations: $2,303,860,314 Net of deobligations, by contracts coded PSC DD01
Contractors: 638 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $379 million, 15.7% 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	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) FTC (Federal Trade Commission)	$378,832,390	15.7%	Rank history: #10 in FY2021, #5 in FY2022, #1 in FY2024 and #2 in FY2025; up 4 since FY2022.
2	Lumen Technologies, Inc. 5 awardees, including Lumen Technologies Government Solutions, Inc., Level 3 Communications, LLC and Centurylink Communications, LLC Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$177,440,807	7.4%	Rank history: #12 in FY2021, #78 in FY2022, #12 in FY2024 and not on the FY2025 list; up 76 since FY2022.
3	DRS Global Enterprise Solutions Inc Through Global Enterprise Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command)	$136,804,510	5.7%	Rank history: not on the FY2021 list, #3 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
4	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$117,578,687	4.9%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2024 and #1 in FY2025; down 2 since FY2022.
5	Science Applications International Corporation 2 awardees Top agencies Army (Department of the Army) USTRANSCOM (Department of Defense United States Transportation Command) Commerce (Department of Commerce)	$80,628,100	3.3%	Rank history: #35 in FY2021, #20 in FY2022, #4 in FY2024 and #3 in FY2025; up 15 since FY2022.
6	Accenture Inc. Through Accenture Federal Services LLC Top agencies DOE (Department of Energy)	$76,454,077	3.2%	Rank history: not on the FY2021 list, #24 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
7	At&T Inc. 13 awardees, including At&T Enterprises, LLC, At&T Mobility National Accounts LLC and Att Mobility LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) EPA (Environmental Protection Agency)	$54,722,780	2.3%	Rank history: #1 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
8	DV United LLC Top agencies DHS (Department of Homeland Security)	$44,161,756	1.8%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and #9 in FY2025; new.
9	HP Enterprise Services LLC 4 awardees, including Peraton Enterprise Solutions LLC, Peraton Technology Services Inc. and Peraton Inc. Top agencies DHRA (Defense Human Resources Activity) DISA (Defense Information Systems Agency) Army (Department of the Army)	$36,364,867	1.5%	Rank history: #7 in FY2021, #7 in FY2022, #82 in FY2024 and not on the FY2025 list; down 2 since FY2022.
10	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Middle Bay Solutions II, LLC Top agencies DHS (Department of Homeland Security) DHRA (Defense Human Resources Activity) HHS (Department of Health and Human Services)	$35,141,090	1.5%	Rank history: #22 in FY2021, #4 in FY2022, #9 in FY2024 and #5 in FY2025; down 6 since FY2022.
11	Stratascor, LLC Top agencies Navy (Department of the Navy)	$34,033,929	1.4%	Rank history: not on the FY2021 list, #8 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
12	Four Points Technology, L.L.C. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$29,741,977	1.2%	Rank history: #4 in FY2021, #22 in FY2022, #36 in FY2024 and #77 in FY2025; up 10 since FY2022.
13	Capgemini Government Solutions LLC Top agencies Army (Department of the Army)	$26,630,000	1.1%	Rank history: not on the FY2021 list, #14 in FY2022, #26 in FY2024 and not on the FY2025 list; up 1 since FY2022.
14	Adg-Rei Technology Ventures, LLC Top agencies DHS (Department of Homeland Security)	$26,544,888	1.1%	Rank history: not on the FY2021 list, #31 in FY2022, #11 in FY2024 and #11 in FY2025; up 17 since FY2022.
15	Deloitte LLP Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$23,924,107	1.0%	Rank history: #5 in FY2021, #98 in FY2022 and not on the FY2024–FY2025 lists; up 83 since FY2022.
16	Koniag Data Solutions LLC Top agencies NARA (National Archives and Records Administration) USDA (Department of Agriculture)	$23,702,335	1.0%	Rank history: not on the FY2021 list, #40 in FY2022, #83 in FY2024 and #91 in FY2025; up 24 since FY2022.
17	Alpha Omega Integration LLC Top agencies DHS (Department of Homeland Security)	$21,959,610	0.9%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #19 in FY2025; up 120 since FY2022.
18	CACI International Inc. Through Caci Nss, LLC Top agencies DHS (Department of Homeland Security) NARA (National Archives and Records Administration)	$21,457,931	0.9%	Rank history: #11 in FY2021, #11 in FY2022, not on the FY2024 list and #18 in FY2025; down 7 since FY2022.
19	On Assignment, Inc. 2 awardees, including Iron Vine Security LLC and ECS Federal, LLC Top agencies Commerce (Department of Commerce) DOJ (Department of Justice)	$21,365,370	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	C4 Planning Solutions, LLC Top agencies Navy (Department of the Navy)	$20,113,822	0.8%	Rank history: #13 in FY2021, #16 in FY2022, #17 in FY2024 and #17 in FY2025; down 4 since FY2022.
21	Dark Wolf Solutions, LLC Top agencies USAF (Department of the Air Force)	$20,004,832	0.8%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2024 and #28 in FY2025; new.
22	Agile Decision Sciences, LLC Top agencies USDA (Department of Agriculture)	$20,000,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Qbase, LLC Top agencies OSD (Office of the Secretary of Defense)	$18,492,948	0.8%	Rank history: #8 in FY2021, #17 in FY2022, #23 in FY2024 and #23 in FY2025; down 6 since FY2022.
24	Creative It Solutions LLC Top agencies DCAA (Defense Contract Audit Agency)	$18,202,694	0.8%	Rank history: #9 in FY2021, #15 in FY2022, #19 in FY2024 and #20 in FY2025; down 9 since FY2022.
25	Microhealth LLC Top agencies HHS (Department of Health and Human Services)	$18,100,592	0.8%	Rank history: #26 in FY2021, #34 in FY2022, #18 in FY2024 and #25 in FY2025; up 9 since FY2022.
26	Tista Science and Technology Corporation Top agencies USDA (Department of Agriculture)	$15,954,810	0.7%	Rank history: not on the FY2021 list, #36 in FY2022, #35 in FY2024 and #34 in FY2025; up 10 since FY2022.
27	Acuity Inc. Top agencies DHS (Department of Homeland Security)	$15,823,382	0.7%	Rank history: not on the FY2021 list, #13 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
28	Dell Federal Systems L.P. Top agencies Commerce (Department of Commerce) Army (Department of the Army) DHS (Department of Homeland Security)	$15,165,189	0.6%	Rank history: #53 in FY2021, #91 in FY2022 and not on the FY2024–FY2025 lists; up 63 since FY2022.
29	Alethix, LLC Top agencies DHS (Department of Homeland Security)	$14,976,116	0.6%	Rank history: #28 in FY2021, #21 in FY2022, #21 in FY2024 and not on the FY2025 list; down 8 since FY2022.
30	Electrosoft Services Inc. Top agencies DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$13,837,266	0.6%	Rank history: #86 in FY2021, #54 in FY2022, #29 in FY2024 and #21 in FY2025; up 24 since FY2022.
31	Soft TECH Consulting, Inc. Top agencies FCC (Federal Communications Commission)	$13,230,529	0.5%	Rank history: #74 in FY2021, not on the FY2022 list, #31 in FY2024 and #39 in FY2025; up 131 since FY2022.
32	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top agencies Commerce (Department of Commerce) NRC (Nuclear Regulatory Commission) DHS (Department of Homeland Security)	$11,489,747	0.5%	Rank history: #24 in FY2021, #26 in FY2022, #56 in FY2024 and not on the FY2025 list; down 6 since FY2022.
33	Teksynap Corporation Top agencies DTRA (Defense Threat Reduction Agency) NRC (Nuclear Regulatory Commission) DLA (Defense Logistics Agency)	$11,088,376	0.5%	Rank history: #33 in FY2021, #44 in FY2022, #40 in FY2024 and #43 in FY2025; up 11 since FY2022.
34	Medidata Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$10,979,211	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Horizon Industries, Limited Top agencies DLA (Defense Logistics Agency)	$10,910,363	0.5%	Rank history: not on the FY2021 list, #45 in FY2022, #54 in FY2024 and not on the FY2025 list; up 10 since FY2022.
36	Evoke Research and Consulting, LLC Top agencies FCC (Federal Communications Commission)	$10,420,767	0.4%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and #47 in FY2025; new.
37	Changeis, Inc. Top agencies DOT (Department of Transportation)	$10,141,633	0.4%	Rank history: not on the FY2021 list, #47 in FY2022, #46 in FY2024 and #35 in FY2025; up 10 since FY2022.
38	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services)	$10,033,602	0.4%	Rank history: not on the FY2021 list, #37 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
39	Jacobs Engineering Group Inc. Through Amentum Technology, Inc. Top agencies USTRANSCOM (Department of Defense United States Transportation Command) USAF (Department of the Air Force)	$9,559,270	0.4%	Rank history: not on the FY2021 list, #23 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
40	Patriot LLC Top agencies SBA (Small Business Administration)	$9,088,543	0.4%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and #80 in FY2025; new.
41	Lightfront LLC Top agencies Commerce (Department of Commerce)	$9,000,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2024 and not on the FY2025 list; new.
42	Vista Defense Technologies, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$8,282,136	0.3%	Rank history: #19 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 24 since FY2022.
43	Galapagos Federal Systems LLC Top agencies Army (Department of the Army)	$7,931,803	0.3%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2024 and #27 in FY2025; new.
44	Qualtryx, LLC Top agencies Commerce (Department of Commerce)	$7,874,380	0.3%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2024 and not on the FY2025 list; new.
45	TCG Inc. Top agencies MCC (Millennium Challenge Corporation) USOGE (US Office of Government Ethics)	$7,733,222	0.3%	Rank history: #32 in FY2021, #29 in FY2022, #39 in FY2024 and #66 in FY2025; down 16 since FY2022.
46	New River Systems Corporation Top agencies DLA (Defense Logistics Agency)	$7,606,278	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	Omni Fed LLC Top agencies USAF (Department of the Air Force)	$7,380,305	0.3%	Rank history: #94 in FY2021, #68 in FY2022, #49 in FY2024 and #15 in FY2025; up 21 since FY2022.
48	Black & Veatch Special Projects Corp. Top agencies DTRA (Defense Threat Reduction Agency)	$7,300,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
49	Amyx Inc. Top agencies DLA (Defense Logistics Agency) DMEA (Defense Microelectronics Activity)	$7,216,723	0.3%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 32 since FY2022.
50	Mythics, LLC Through Emergent, LLC Top agencies HUD (Department of Housing and Urban Development) Commerce (Department of Commerce) NARA (National Archives and Records Administration)	$7,042,740	0.3%	Rank history: #76 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
51	Computer World Services, Corp. Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$7,040,886	0.3%	Rank history: #38 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
52	Corp Ten International Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,993,131	0.3%	Rank history: not on the FY2021 list, #46 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
53	Mission Innovate LLC Top agencies USAF (Department of the Air Force)	$6,944,558	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
54	Koniag Professional Services, LLC Top agencies DHA (Defense Health Agency)	$6,921,692	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Sev1Tech, LLC Top agencies DHS (Department of Homeland Security)	$6,776,314	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Validatek-Citi, LLC Top agencies DHS (Department of Homeland Security)	$6,576,371	0.3%	Rank history: #39 in FY2021, #50 in FY2022, #59 in FY2024 and #92 in FY2025; down 6 since FY2022.
57	Earth Resources Technology, LLC Top agencies Commerce (Department of Commerce)	$6,264,207	0.3%	Rank history: not on the FY2021 list, #53 in FY2022, #57 in FY2024 and #55 in FY2025; down 4 since FY2022.
58	Saliense Consulting LLC Top agencies Navy (Department of the Navy)	$6,034,608	0.3%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2024 and #48 in FY2025; new.
59	Thundercat Technology LLC Top agencies Commerce (Department of Commerce) GAO (Government Accountability Office) NRC (Nuclear Regulatory Commission)	$5,945,962	0.2%	Rank history: not on the FY2021 list, #35 in FY2022, #48 in FY2024 and #42 in FY2025; down 24 since FY2022.
60	Logistics Systems Incorporated Top agencies Army (Department of the Army)	$5,932,484	0.2%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2024 and not on the FY2025 list; new.
61	Wolftek Mission Group, LLC Top agencies Commerce (Department of Commerce)	$5,851,582	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 77 since FY2022.
62	Systems Integration & Development Inc. Top agencies Commerce (Department of Commerce)	$5,821,404	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Govsmart, Inc. Top agencies SBA (Small Business Administration) Commerce (Department of Commerce) Peace Corps	$5,700,514	0.2%	Rank history: #37 in FY2021, #63 in FY2022, #89 in FY2024 and not on the FY2025 list; unchanged since FY2022.
64	Concept Plus, LLC Top agencies Commerce (Department of Commerce) DLA (Defense Logistics Agency)	$5,650,285	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and #52 in FY2025; up 62 since FY2022.
65	Belcan Corporation Through Belcan Government Solutions, Inc. Top agencies FCC (Federal Communications Commission)	$5,648,980	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
66	Technology Automation & Management Inc Top agencies DMEA (Defense Microelectronics Activity)	$5,619,003	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Softrams LLC Top agencies DHS (Department of Homeland Security)	$5,579,632	0.2%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2024 and #54 in FY2025; up 66 since FY2022.
68	Metaphase Consulting LLC Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$5,463,409	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and #33 in FY2025; new.
69	A1M Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$5,397,039	0.2%	Rank history: #42 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
70	Octo Consulting Group Inc. 2 awardees, including B 3 Group, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$5,394,243	0.2%	Rank history: not on the FY2021 list, #56 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
71	Accelgov LLC Top agencies NARA (National Archives and Records Administration)	$5,311,792	0.2%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2024 and #31 in FY2025; new.
72	International Business Machines Corporation 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$5,256,829	0.2%	Rank history: #66 in FY2021, #70 in FY2022, #71 in FY2024 and #50 in FY2025; down 2 since FY2022.
73	UIC Government Services LLC 2 awardees, including Bowhead Communication Services LLC and Bowhead Total Enterprise Solutions, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$5,217,765	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.
74	Riva Solutions Inc Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$5,191,722	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Scitec Innovations LLC Top agencies USAF (Department of the Air Force)	$5,066,517	0.2%	Rank history: not on the FY2021 list, #77 in FY2022, #55 in FY2024 and #61 in FY2025; up 2 since FY2022.
76	Tiber Creek Consulting Inc. Top agencies Army (Department of the Army)	$5,051,646	0.2%	Rank history: #51 in FY2021, #62 in FY2022, #78 in FY2024 and #67 in FY2025; down 14 since FY2022.
77	Oddball, Inc. Top agencies OPM (Office of Personnel Management)	$4,924,155	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and not on the FY2025 list; new.
78	VMD Systems Integrators Inc Top agencies USAF (Department of the Air Force)	$4,870,272	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	CMA Technology Inc. Top agencies HHS (Department of Health and Human Services)	$4,684,041	0.2%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and #32 in FY2025; new.
80	Manhattan Telecommunications Corporation LLC Top agencies NARA (National Archives and Records Administration) DHS (Department of Homeland Security)	$4,648,885	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #56 in FY2025; up 81 since FY2022.
81	Syncadd Systems Inc. Top agencies Army (Department of the Army)	$4,575,831	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and not on the FY2025 list; new.
82	Namauu Technological and Industrial LLC Top agencies USAF (Department of the Air Force)	$4,527,787	0.2%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and #71 in FY2025; new.
83	Clear Vantage Point Solutions LLC Top agencies VA (Department of Veterans Affairs)	$4,517,962	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Agile Defense, LLC Top agencies Army (Department of the Army)	$4,505,070	0.2%	Rank history: #58 in FY2021, #51 in FY2022, not on the FY2024 list and #41 in FY2025; down 33 since FY2022.
85	Immersive Concepts L.L.C. Top agencies HHS (Department of Health and Human Services)	$4,400,888	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 175 since FY2022.
86	Aleut Information Technology LLC Top agencies USDA (Department of Agriculture)	$4,368,924	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2024 and not on the FY2025 list; new.
87	Blue TECH Inc. Top agencies Commerce (Department of Commerce) NRC (Nuclear Regulatory Commission) DOL (Department of Labor)	$4,344,827	0.2%	Rank history: #14 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 77 since FY2022.
88	Software Information Resource Corp Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture)	$4,322,555	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 65 since FY2022.
89	Environmental Systems Research Institute, Inc. Top agencies Commerce (Department of Commerce) Army (Department of the Army) USSOCOM (United States Special Operations Command)	$4,284,827	0.2%	Rank history: #67 in FY2021, #96 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
90	Reveal Global Consulting LLC Top agencies Commerce (Department of Commerce)	$4,217,756	0.2%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2024 and not on the FY2025 list; new.
91	Federal Information Systems Inc Top agencies Army (Department of the Army)	$4,210,040	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Seneca Strategic Partners, LLC Top agencies USDA (Department of Agriculture)	$4,207,480	0.2%	Rank history: not on the FY2021 list, #71 in FY2022, #76 in FY2024 and #79 in FY2025; down 21 since FY2022.
93	Nationwide It Services Inc. Top agencies DLA (Defense Logistics Agency)	$4,204,322	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #93 in FY2025; new.
94	Rackner Vision, LLC Top agencies DHS (Department of Homeland Security)	$3,977,900	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Idoxsolutions Inc Top agencies GSA (General Services Administration)	$3,954,882	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Guidehouse Digital LLC Top agencies Commerce (Department of Commerce)	$3,861,037	0.2%	Rank history: not on the FY2021 list, #84 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
97	Lockheed Martin Corporation Top agencies Navy (Department of the Navy)	$3,855,993	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Deloitte Consulting LLP Top agencies DHS (Department of Homeland Security)	$3,843,422	0.2%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2024 and not on the FY2025 list; new.
99	Information Technology Strategies, Inc. Top agencies DLA (Defense Logistics Agency)	$3,842,102	0.2%	Rank history: #30 in FY2021, #59 in FY2022 and not on the FY2024–FY2025 lists; down 40 since FY2022.
100	Prometheus Computing, LLC Top agencies Commerce (Department of Commerce) EAC (US Election Assistance Commission)	$3,833,402	0.2%	Rank history: #77 in FY2021, #73 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.

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100 of 638 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 $2.41 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 DD01 contractors in FY2023?

1. Leidos Holdings, Inc. ($379M), 2. Lumen Technologies, Inc. ($177M), 3. DRS Global Enterprise Solutions Inc ($137M), 4. General Dynamics Corporation ($118M), 5. Science Applications International Corporation ($80.6M), 6. Accenture Inc. ($76.5M), 7. At&T Inc. ($54.7M), 8. DV United LLC ($44.2M), 9. HP Enterprise Services LLC ($36.4M), 10. Booz Allen Hamilton Holding Corporation ($35.1M).

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