Top 100 Contractors in PSC D: IT and Telecom – Information Technology and Telecommunications, FY2021

Name: Top 100 Contractors in PSC D: IT and Telecom – Information Technology and Telecommunications, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 29% of FY2021 PSC D contract dollars

Contract obligations: $49,186,514,383 Net of deobligations, by contracts coded PSC D or a code under it
Contractors: 6,426 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $2.42 billion, 4.6% 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. 22 awardees, including Leidos, Inc. and Leidos SMS Inc. Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) DHS (Department of Homeland Security)	$2,415,466,785	4.6%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
2	General Dynamics Corporation 23 awardees, including General Dynamics Information Technology, Inc., Csra LLC and General Dynamics One Source LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) USAF (Department of the Air Force)	$2,221,489,414	4.2%	Rank history: #3 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; down 1 since FY2020.
3	Booz Allen Hamilton Holding Corporation 7 awardees, including Booz Allen Hamilton Inc., Liberty It Solutions LLC and Middle Bay Solutions II, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$1,842,606,850	3.5%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since FY2020.
4	Accenture Federal Services LLC 6 awardees, including ASM Research, LLC, Accenture LLP and Phase One Consulting Group, LLC Top agencies DOE (Department of Energy) DOS (Department of State) DHS (Department of Homeland Security)	$1,593,858,223	3.0%	Rank history: #8 in FY2022, #27 in FY2023, #4 in FY2024 and #4 in FY2025; up 1 since FY2020.
5	CACI International Inc. 15 awardees, including Caci, Inc. - Federal, Caci-Iss, LLC and Caci Nss, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$1,479,312,795	2.8%	Rank history: #6 in FY2022, #7 in FY2023, #7 in FY2024 and #6 in FY2025; up 3 since FY2020.
6	Science Applications International Corporation 7 awardees, including Halfaker and Associates, LLC and Engility Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,377,346,573	2.6%	Rank history: #5 in FY2022, #8 in FY2023, #5 in FY2024 and #7 in FY2025; up 4 since FY2020.
7	Dell Federal Systems L.P. 6 awardees, including Dell Marketing L.P., Pivotal Software, Inc. and EMC Corporation Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$1,256,990,459	2.4%	Rank history: #7 in FY2022, #6 in FY2023, #13 in FY2024 and not on the FY2025 list; down 1 since FY2020.
8	Perspecta Inc. 6 awardees, including Peraton Enterprise Solutions LLC, Knight Point Systems, LLC and Peraton Technology Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,057,616,966	2.0%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
9	Cerner Corporation 3 awardees, including Oracle Health Government Services, Inc. and Cerner Federal Solutions LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$934,690,556	1.8%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
10	Northrop Grumman Corporation 19 awardees, including Northrop Grumman Systems Corporation Top agencies SSA (Social Security Administration) Army (Department of the Army) USAF (Department of the Air Force)	$919,605,579	1.7%	Rank history: #27 in FY2022, #36 in FY2023, #56 in FY2024 and #56 in FY2025; up 2 since FY2020.
11	At&T Inc. 44 awardees, including At&T Enterprises, LLC, Att Mobility LLC and At&T Mobility National Accounts LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$793,810,316	1.5%	Rank history: #10 in FY2022, #9 in FY2023, #9 in FY2024 and #10 in FY2025; unchanged since FY2020.
12	Deloitte LLP 5 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$727,534,959	1.4%	Rank history: #12 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
13	International Business Machines Corporation 8 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$658,909,780	1.3%	Rank history: #16 in FY2022, #12 in FY2023, #10 in FY2024 and #11 in FY2025; up 3 since FY2020.
14	HP Enterprise Services LLC 14 awardees, including Peraton Enterprise Solutions LLC, Peraton Inc. and Knight Point Systems, LLC Top agencies NASA (National Aeronautics and Space Administration) DHRA (Defense Human Resources Activity) HHS (Department of Health and Human Services)	$649,516,442	1.2%	Rank history: #4 in FY2022, #4 in FY2023, #18 in FY2024 and not on the FY2025 list; up 19 since FY2020.
15	CGI Technologies and Solutions Inc. 2 awardees, including CGI Federal Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$644,442,894	1.2%	Rank history: #13 in FY2022, #15 in FY2023, #24 in FY2024 and not on the FY2025 list; down 2 since FY2020.
16	L3Harris Technologies, Inc. 20 awardees, including Harris Corporation, L3Harris Technologies Integrated Systems L.P. and L3Harris Forcex, Inc. Top agencies DOT (Department of Transportation) Commerce (Department of Commerce) Army (Department of the Army)	$572,878,451	1.1%	Rank history: #15 in FY2022, #16 in FY2023, #17 in FY2024 and #13 in FY2025; up 5 since FY2020.
17	RTX Corporation 23 awardees, including Raytheon Company, Arinc Incorporated and RTX BBN Technologies, Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$471,780,439	0.9%	Rank history: #20 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
18	Verizon Communications Inc. 21 awardees, including Verizon Business Network Services LLC, Cellco Partnership and Verizon Federal Inc. Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) Army (Department of the Army)	$440,357,495	0.8%	Rank history: #11 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
19	Carahsoft Technology Corp Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$438,839,875	0.8%	Rank history: #21 in FY2022, #20 in FY2023, #19 in FY2024 and #19 in FY2025; down 4 since FY2020.
20	Nana Regional Corporation Inc 12 awardees, including Sava Workforce Solutions LLC, Affigent, LLC and Cloud Lake Technology LLC Top agencies DOJ (Department of Justice) Army (Department of the Army) HHS (Department of Health and Human Services)	$406,020,145	0.8%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
21	Jacobs Engineering Group Inc. 11 awardees, including Amentum Technology, Inc., The Keyw Corporation and Sotera Defense Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) ED (Department of Education)	$388,003,739	0.7%	Rank history: #22 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
22	Maximus Inc. 7 awardees, including Maximus Federal Services, Inc., Maximus Federal Technology Solutions, LLC and Insysco, Inc. Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$345,991,384	0.7%	Rank history: #29 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
23	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$329,704,687	0.6%	Rank history: #25 in FY2022, #17 in FY2023, #15 in FY2024 and #17 in FY2025; up 9 since FY2020.
24	V3Gate, LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) DOJ (Department of Justice)	$288,226,912	0.5%	Rank history: #26 in FY2022, #19 in FY2023, #16 in FY2024 and #18 in FY2025; up 29 since FY2020.
25	Tista Science and Technology Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$261,015,662	0.5%	Rank history: #28 in FY2022, #32 in FY2023, #52 in FY2024 and #68 in FY2025; up 10 since FY2020.
26	Lumen Technologies, Inc. 36 awardees, including Lumen Technologies Government Solutions, Inc., Level 3 Communications, LLC and Level 3 Telecom Holdings, LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) SSA (Social Security Administration)	$253,744,524	0.5%	Rank history: #23 in FY2022, #18 in FY2023, #29 in FY2024 and not on the FY2025 list; down 12 since FY2020.
27	Mantech International Corporation 8 awardees, including Mantech Advanced Systems International, Inc., Infozen, LLC and Mantech Information Systems & Technology Corporation Top agencies DHS (Department of Homeland Security) Army (Department of the Army) DHA (Defense Health Agency)	$246,238,172	0.5%	Rank history: #38 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
28	Lockheed Martin Corporation 9 awardees Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) Army (Department of the Army)	$222,234,718	0.4%	Rank history: #42 in FY2022, #50 in FY2023, #96 in FY2024 and not on the FY2025 list; up 15 since FY2020.
29	Arctic Slope Regional Corporation 12 awardees, including Inuteq, LLC, Netcentric Technology, LLC and Asrc Federal Data Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) DOS (Department of State) DISA (Defense Information Systems Agency)	$219,457,401	0.4%	Rank history: #31 in FY2022, #29 in FY2023, #31 in FY2024 and #25 in FY2025; up 17 since FY2020.
30	Govcio, LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOL (Department of Labor)	$218,989,843	0.4%	Rank history: #18 in FY2022, #41 in FY2023, #60 in FY2024 and #57 in FY2025; up 31 since FY2020.
31	Advanced Technology Systems Inc. 7 awardees, including Salient Crgt, Inc., Salient Federal Solutions, Inc. and Salient Federal-Sgis Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) GAO (Government Accountability Office)	$212,660,185	0.4%	Rank history: not on the FY2022 list, #24 in FY2023, #41 in FY2024 and not on the FY2025 list; up 3 since FY2020.
32	Fcn, Inc. Top agencies Treasury (Department of the Treasury) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$208,820,486	0.4%	Rank history: #33 in FY2022, #28 in FY2023, #25 in FY2024 and #34 in FY2025; up 8 since FY2020.
33	Iridium Satellite LLC 2 awardees, including Iridium Government Services LLC Top agencies DISA (Defense Information Systems Agency)	$207,001,639	0.4%	Rank history: #83 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 331 since FY2020.
34	SRA International Inc. 2 awardees, including General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$190,112,716	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Liberty It Solutions LLC Top agencies VA (Department of Veterans Affairs)	$187,078,666	0.4%	Rank history: #85 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
36	Vectrus Systems Corporation 3 awardees, including V2X Systems LLC and Advantor Systems II LLC Top agencies Army (Department of the Army) DSCA (Defense Security Cooperation Agency) WHS (DOD Washington Headquarters Service)	$182,164,168	0.3%	Rank history: #76 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
37	By Light Professional It Services LLC 5 awardees, including Phacil, LLC, Cole Engineering Services, Inc. and Metova Federal, LLC Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$181,459,152	0.3%	Rank history: #51 in FY2022, #58 in FY2023, #48 in FY2024 and #60 in FY2025; down 1 since FY2020.
38	Nippon Telegraph and Telephone Corporation 7 awardees, including NTT Data Federal Services, Inc., NTT Data Services Federal Government, LLC and NTT Docomo, Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$181,446,287	0.3%	Rank history: #43 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
39	Thundercat Technology, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$177,464,061	0.3%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
40	Octo Consulting Group Inc. 2 awardees, including Sevatec LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$177,213,205	0.3%	Rank history: #24 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 110 since FY2020.
41	World Wide Technology Holding Co. Inc. Through World Wide Technology LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$175,357,304	0.3%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
42	On Assignment, Inc. 4 awardees, including ECS Federal, LLC and Indrasoft Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Navy (Department of the Navy)	$165,881,258	0.3%	Rank history: #39 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
43	Mythics, LLC 2 awardees, including Emergent, LLC Top agencies VA (Department of Veterans Affairs) DHRA (Defense Human Resources Activity) USAF (Department of the Air Force)	$165,487,132	0.3%	Rank history: #40 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
44	Smartronix LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$164,139,117	0.3%	Rank history: #41 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
45	ICF International, Inc. 3 awardees, including Incentive Technology Group LLC and ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) FCC (Federal Communications Commission) GSA (General Services Administration)	$160,450,171	0.3%	Rank history: #44 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 50 since FY2020.
46	Microsoft Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$146,618,736	0.3%	Rank history: #36 in FY2022, #34 in FY2023, #61 in FY2024 and #26 in FY2025; down 8 since FY2020.
47	Leonardo S.p.A. 2 awardees, including Global Enterprise Solutions, Inc. and DRS Network & Imaging Systems LLC Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army) USAF (Department of the Air Force)	$142,633,493	0.3%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
48	Semanticbits LLC Top agencies HHS (Department of Health and Human Services) GSA (General Services Administration) NRC (Nuclear Regulatory Commission)	$142,247,115	0.3%	Rank history: #55 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; up 49 since FY2020.
49	Rei Systems, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DHRA (Defense Human Resources Activity)	$138,621,002	0.3%	Rank history: not on the FY2022–FY2023 lists, #71 in FY2024 and #69 in FY2025; up 51 since FY2020.
50	Koniag, Inc. 8 awardees, including Eagle Harbor Solutions LLC, Tuknik Government Services LLC and Arlluk Technology Solutions LLC Top agencies DOS (Department of State) SSA (Social Security Administration) USDA (Department of Agriculture)	$136,410,495	0.3%	Rank history: #45 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
51	ACE Info Solutions LLC 2 awardees, including Guidehouse Digital LLC and Dovel Technologies LLC Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) Commerce (Department of Commerce)	$134,933,212	0.3%	Rank history: not on the FY2022 list, #70 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2020.
52	All Points Logistics, LLC Top agencies VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration) DISA (Defense Information Systems Agency)	$131,837,313	0.3%	Rank history: #59 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
53	B 3 Group, LLC Top agencies VA (Department of Veterans Affairs)	$130,179,791	0.2%	Rank history: not on the FY2022–FY2023 lists, #59 in FY2024 and not on the FY2025 list; up 32 since FY2020.
54	Ventech Solutions Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DHA (Defense Health Agency)	$129,624,423	0.2%	Rank history: #57 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
55	Stratos Government Services, Inc. Through Inmarsat Government, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$121,798,462	0.2%	Rank history: #54 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
56	Red River Technology LLC 2 awardees, including Distributed Technology Group LLC Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) Treasury (Department of the Treasury)	$117,019,415	0.2%	Rank history: #50 in FY2022, #63 in FY2023, #78 in FY2024 and not on the FY2025 list; up 8 since FY2020.
57	Palantir Technologies Inc. 2 awardees, including Palantir USG Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$115,832,467	0.2%	Rank history: #37 in FY2022, #39 in FY2023, #53 in FY2024 and #16 in FY2025; up 42 since FY2020.
58	Viasat Inc. 2 awardees, including Rignet, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$115,201,244	0.2%	Rank history: #53 in FY2022, #51 in FY2023, #40 in FY2024 and #62 in FY2025; up 10 since FY2020.
59	H.i.g. Capital Management Inc. 3 awardees, including Empower AI, Inc., Iron Bow Technologies, LLC and Symplicity Corporation Top agencies GSA (General Services Administration) USAF (Department of the Air Force) Army (Department of the Army)	$108,287,150	0.2%	Rank history: #30 in FY2022, #26 in FY2023, #36 in FY2024 and not on the FY2025 list; up 145 since FY2020.
60	Unisys Corporation Top agencies DOJ (Department of Justice) DOT (Department of Transportation) GSA (General Services Administration)	$104,368,037	0.2%	Rank history: not on the FY2022–FY2025 lists; down 36 since FY2020.
61	HP, Inc. 4 awardees, including HPI Federal LLC and Hewlett-Packard Company Top agencies Navy (Department of the Navy) DOS (Department of State) GSA (General Services Administration)	$102,698,974	0.2%	Rank history: #56 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
62	Kbr, Inc. 6 awardees, including KBR Wyle Services, LLC and Kord Technologies, LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation) Commerce (Department of Commerce)	$101,396,791	0.2%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
63	Cisco Systems Inc. 2 awardees Top agencies DISA (Defense Information Systems Agency) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$98,511,661	0.2%	Rank history: not on the FY2022–FY2025 lists; down 45 since FY2020.
64	I3 Federal LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$98,502,452	0.2%	Rank history: not on the FY2022–FY2025 lists; up 65 since FY2020.
65	Cognosante Holdings, LLC 3 awardees, including Cognosante MVH LLC, Cognosante, LLC and Cognosante Cds, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOL (Department of Labor)	$97,641,166	0.2%	Rank history: #61 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2020.
66	Medical Science & Computing, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$96,522,833	0.2%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
67	Metgreen Solutions Inc. Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) Commerce (Department of Commerce)	$96,096,659	0.2%	Rank history: #80 in FY2022, not on the FY2023 list, #50 in FY2024 and #46 in FY2025; up 66 since FY2020.
68	BAE Systems PLC 2 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$95,624,573	0.2%	Rank history: #49 in FY2022, #30 in FY2023, #26 in FY2024 and #42 in FY2025; up 24 since FY2020.
69	Halfaker and Associates, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$93,968,713	0.2%	Rank history: not on the FY2022–FY2025 lists; down 25 since FY2020.
70	Agile Defense, LLC Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$93,848,899	0.2%	Rank history: #82 in FY2022, not on the FY2023–FY2024 lists and #93 in FY2025; down 3 since FY2020.
71	Goldschmitt-Cri LLC Top agencies SBA (Small Business Administration)	$89,795,448	0.2%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
72	22Nd Century Technologies, Inc. Top agencies Commerce (Department of Commerce) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$89,490,204	0.2%	Rank history: #58 in FY2022, #93 in FY2023, not on the FY2024 list and #85 in FY2025; up 11 since FY2020.
73	Maximus Federal Technology Solutions, LLC Top agencies DHS (Department of Homeland Security) SEC (Securities and Exchange Commission) Army (Department of the Army)	$89,296,776	0.2%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
74	Criterion Systems, L.L.C. Top agencies DOE (Department of Energy) USDA (Department of Agriculture) NSF (National Science Foundation)	$87,581,702	0.2%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
75	Advantaged Solutions, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$87,380,491	0.2%	Rank history: #35 in FY2022, #44 in FY2023, #35 in FY2024 and #30 in FY2025; up 15 since FY2020.
76	Telos Corporation Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) DISA (Defense Information Systems Agency)	$86,019,109	0.2%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
77	Alvarez LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) DISA (Defense Information Systems Agency)	$84,889,685	0.2%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
78	SES Government Solutions Inc. Through SES Space & Defense, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$84,220,354	0.2%	Rank history: not on the FY2022 list, #98 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
79	Dev Technology Group Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$83,751,508	0.2%	Rank history: not on the FY2022 list, #65 in FY2023, #63 in FY2024 and #47 in FY2025; down 4 since FY2020.
80	Blue Cross & Blue Shield of South Carolina 3 awardees, including Companion Data Services LLC and Palmetto Gba, LLC Top agencies HHS (Department of Health and Human Services)	$83,422,015	0.2%	Rank history: not on the FY2022 list, #52 in FY2023, #49 in FY2024 and not on the FY2025 list; down 2 since FY2020.
81	Insight Public Sector Inc. 6 awardees, including Pcmg, Inc. Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) GAO (Government Accountability Office)	$83,167,156	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
82	Dataminr, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State) HHS (Department of Health and Human Services)	$82,683,967	0.2%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
83	Digital Management LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) HUD (Department of Housing and Urban Development)	$82,598,787	0.2%	Rank history: #96 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
84	American Systems Corporation Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$82,551,288	0.2%	Rank history: #94 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; down 18 since FY2020.
85	Alethix, LLC Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) USAF (Department of the Air Force)	$82,481,629	0.2%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 130 since FY2020.
86	Synergy Business Innovation & Solutions Inc. Top agencies DHS (Department of Homeland Security) DOL (Department of Labor) DOT (Department of Transportation)	$81,720,968	0.2%	Rank history: #70 in FY2022, #53 in FY2023, #64 in FY2024 and #55 in FY2025; up 49 since FY2020.
87	Creative It Solutions LLC Top agencies USSOCOM (United States Special Operations Command) DCAA (Defense Contract Audit Agency) DISA (Defense Information Systems Agency)	$81,653,562	0.2%	Rank history: #81 in FY2022, #79 in FY2023, #95 in FY2024 and not on the FY2025 list; up 47 since FY2020.
88	Teksynap Corporation Top agencies DTRA (Defense Threat Reduction Agency) DLA (Defense Logistics Agency) NRC (Nuclear Regulatory Commission)	$81,274,929	0.2%	Rank history: #47 in FY2022, #48 in FY2023, #46 in FY2024 and #73 in FY2025; up 27 since FY2020.
89	Tetra Tech, Inc. 7 awardees, including Segue Technologies, Inc., Bluewater Federal Solutions, Inc. and Advanced Management Technology, Inc. Top agencies USAF (Department of the Air Force) DISA (Defense Information Systems Agency) DHA (Defense Health Agency)	$81,054,437	0.2%	Rank history: #78 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 205 since FY2020.
90	SMS Data Products Group Inc. Top agencies USAF (Department of the Air Force)	$78,631,285	0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
91	Four LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHA (Defense Health Agency)	$78,331,076	0.1%	Rank history: #67 in FY2022, #67 in FY2023, #91 in FY2024 and #90 in FY2025; down 19 since FY2020.
92	Arrow Electronics, Inc. 4 awardees, including Immixtechnology Inc. and EC America, Inc. Top agencies DISA (Defense Information Systems Agency) Treasury (Department of the Treasury) DOL (Department of Labor)	$77,893,027	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
93	Favor Techconsulting, LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOL (Department of Labor)	$77,818,362	0.1%	Rank history: #69 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
94	Motorola Inc 3 awardees, including Motorola Solutions, Inc. and Motorola Solutions Connectivity, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) DOJ (Department of Justice)	$77,399,854	0.1%	Rank history: not on the FY2022–FY2025 lists; up 162 since FY2020.
95	Minburn Technology Group, LLC Top agencies VA (Department of Veterans Affairs) SBA (Small Business Administration) Treasury (Department of the Treasury)	$76,775,920	0.1%	Rank history: #65 in FY2022, #35 in FY2023, #21 in FY2024 and #21 in FY2025; up 35 since FY2020.
96	Artel LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$76,065,776	0.1%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
97	Directviz Solutions, LLC Top agencies Army (Department of the Army) DOS (Department of State) USDA (Department of Agriculture)	$75,804,190	0.1%	Rank history: not on the FY2022–FY2025 lists; up 39 since FY2020.
98	Peckham Vocational Industries, Inc. Top agencies DOS (Department of State) USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$75,707,421	0.1%	Rank history: #93 in FY2022, #61 in FY2023, #28 in FY2024 and #33 in FY2025; up 11 since FY2020.
99	Customer Value Partners, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DHS (Department of Homeland Security)	$74,286,863	0.1%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
100	Alamo City Engineering Services, Inc. Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$72,545,271	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 75 since FY2020.

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100 of 6,426 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC D

Code	Net obligations	Largest contractor
D3 Automatic Data Processing and Telecommunications	$32,308,084,988	General Dynamics Corporation
DA IT and Telecom – Applications	$8,642,976,386	Leidos Holdings, Inc.
DG IT and Telecom – Network	$2,046,049,194	Vectrus Systems Corporation
DF IT and Telecom – IT Management	$1,635,325,151	Accenture Federal Services LLC
DE IT and Telecom – End User	$1,101,965,383	CACI International Inc.
DD IT and Telecom – Delivery	$918,951,724	At&T Inc.
DJ IT and Telecom – Security and Compliance	$858,931,843	Perspecta Inc.
DC IT and Telecom – Data Center	$642,303,967	Tista Science and Technology Corporation
DB IT and Telecom – Compute	$477,186,514	General Dynamics Corporation
DH IT and Telecom – Platform	$422,335,117	I3 Federal LLC
DK IT and Telecom – Storage	$132,404,118	Four Points Technology, L.L.C.

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 $52.7 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC D contractors in FY2021?

1. Leidos Holdings, Inc. ($2.42B), 2. General Dynamics Corporation ($2.22B), 3. Booz Allen Hamilton Holding Corporation ($1.84B), 4. Accenture Federal Services LLC ($1.59B), 5. CACI International Inc. ($1.48B), 6. Science Applications International Corporation ($1.38B), 7. Dell Federal Systems L.P. ($1.26B), 8. Perspecta Inc. ($1.06B), 9. Cerner Corporation ($935M), 10. Northrop Grumman Corporation ($920M).

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