Top 100 Contractors in NAICS 51: Information, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency) Army (Department of the Army)	$842,452,558	5.6%	Rank history: #3 in FY2022, #3 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since FY2020.
2	At&T Inc. 50 awardees, including At&T Enterprises, LLC, At&T Technical Services Company, Inc. and At&T Mobility National Accounts LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$786,122,286	5.3%	Rank history: #2 in FY2022, #2 in FY2023, #3 in FY2024 and #3 in FY2025; up 1 since FY2020.
3	Dell Federal Systems L.P. 5 awardees, including Dell Marketing L.P. and EMC Corporation Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Navy (Department of the Navy)	$584,507,787	3.9%	Rank history: #1 in FY2022, #1 in FY2023, #4 in FY2024 and not on the FY2025 list; up 6 since FY2020.
4	Verizon Communications Inc. 24 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)	$336,044,291	2.2%	Rank history: #4 in FY2022, #4 in FY2023, #85 in FY2024 and not on the FY2025 list; down 3 since FY2020.
5	General Dynamics Corporation 16 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics One Source LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$335,042,304	2.2%	Rank history: #13 in FY2022, #8 in FY2023, #8 in FY2024 and #16 in FY2025; up 3 since FY2020.
6	HP Enterprise Services LLC 10 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Government Communications Inc. Top agencies NASA (National Aeronautics and Space Administration) DHRA (Defense Human Resources Activity) HHS (Department of Health and Human Services)	$325,465,488	2.2%	Rank history: #5 in FY2022, #5 in FY2023, #31 in FY2024 and not on the FY2025 list; up 10 since FY2020.
7	CACI International Inc. 6 awardees, including Caci Nss, LLC, Caci Inc - Federal and LGS Innovations LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Army (Department of the Army)	$300,248,011	2.0%	Rank history: #12 in FY2022, #10 in FY2023, #53 in FY2024 and #14 in FY2025; up 6 since FY2020.
8	Lumen Technologies, Inc. 38 awardees, including Lumen Technologies Government Solutions, Inc., Level 3 Communications, LLC and Level 3 Telecom Holdings, LLC Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) DOI (Department of the Interior)	$298,608,738	2.0%	Rank history: #7 in FY2022, #6 in FY2023, #9 in FY2024 and not on the FY2025 list; down 4 since FY2020.
9	Goldschmitt-Cri LLC Top agencies SBA (Small Business Administration)	$290,625,347	1.9%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
10	Reed Elsevier Inc. 16 awardees, including Reed Technology and Information Services LLC, Relx Inc. and Elsevier B.V. Top agencies Commerce (Department of Commerce) DOJ (Department of Justice) DHS (Department of Homeland Security)	$283,849,239	1.9%	Rank history: #10 in FY2022, #11 in FY2023, #41 in FY2024 and not on the FY2025 list; up 2 since FY2020.
11	Leidos Holdings, Inc. 12 awardees, including Leidos, Inc. and Leidos Digital Solutions Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation) DISA (Defense Information Systems Agency)	$229,954,254	1.5%	Rank history: #9 in FY2022, #9 in FY2023, #12 in FY2024 and #17 in FY2025; down 6 since FY2020.
12	Palantir Technologies Inc. 2 awardees, including Palantir USG Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$222,951,896	1.5%	Rank history: #8 in FY2022, #7 in FY2023, #6 in FY2024 and #4 in FY2025; up 2 since FY2020.
13	Iridium Satellite LLC 3 awardees, including Iridium Government Services LLC Top agencies DISA (Defense Information Systems Agency)	$206,957,877	1.4%	Rank history: #30 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 91 since FY2020.
14	Fors Marsh Group LLC Top agencies HHS (Department of Health and Human Services)	$206,740,236	1.4%	Rank history: #6 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
15	Perspecta Inc. 5 awardees, including Peraton Enterprise Solutions LLC, Knight Point Systems, LLC and Peraton Technology Services Inc. Top agencies HUD (Department of Housing and Urban Development) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$196,708,031	1.3%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
16	Minburn Technology Group, LLC Top agencies DLA (Defense Logistics Agency) USSOCOM (United States Special Operations Command) SBA (Small Business Administration)	$173,907,945	1.2%	Rank history: #16 in FY2022, #12 in FY2023, #10 in FY2024 and #8 in FY2025; up 10 since FY2020.
17	RTX Corporation 14 awardees, including Raytheon Company, Arinc Incorporated and Rosemount Aerospace Limited Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$163,325,109	1.1%	Rank history: #39 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
18	Insight Public Sector Inc. 6 awardees, including Pcmg, Inc. Top agencies Navy (Department of the Navy) GAO (Government Accountability Office) NARA (National Archives and Records Administration)	$142,721,428	1.0%	Rank history: not on the FY2022–FY2025 lists; up 221 since FY2020.
19	Leonardo S.p.A. 4 awardees, including Global Enterprise Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army) DHS (Department of Homeland Security)	$137,094,992	0.9%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
20	Northrop Grumman Corporation 16 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) HUD (Department of Housing and Urban Development)	$134,565,079	0.9%	Rank history: #21 in FY2022, #33 in FY2023, #48 in FY2024 and #94 in FY2025; up 4 since FY2020.
21	Lockheed Martin Corporation 9 awardees, including Lockheed Martin Services, LLC and Lockheed Martin Global, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$134,125,828	0.9%	Rank history: #15 in FY2022, #15 in FY2023, #14 in FY2024 and #18 in FY2025; unchanged since FY2020.
22	Four LLC Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) Army (Department of the Army)	$129,361,506	0.9%	Rank history: #14 in FY2022, #22 in FY2023, #34 in FY2024 and #52 in FY2025; up 7 since FY2020.
23	International Business Machines Corporation 6 awardees Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$118,196,879	0.8%	Rank history: #26 in FY2022, #16 in FY2023, #19 in FY2024 and #12 in FY2025; down 3 since FY2020.
24	Telos Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) USSOCOM (United States Special Operations Command)	$116,796,109	0.8%	Rank history: #35 in FY2022, #98 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
25	Environmental Systems Research Institute, Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture) Army (Department of the Army)	$114,064,697	0.8%	Rank history: #20 in FY2022, #17 in FY2023, #16 in FY2024 and #22 in FY2025; down 3 since FY2020.
26	Stratos Government Services, Inc. Through Inmarsat Government, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) Commerce (Department of Commerce)	$111,105,693	0.7%	Rank history: #18 in FY2022, #23 in FY2023, #84 in FY2024 and not on the FY2025 list; down 1 since FY2020.
27	Viasat Inc. 2 awardees, including Rignet, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$106,873,633	0.7%	Rank history: #17 in FY2022, #21 in FY2023, #29 in FY2024 and #30 in FY2025; down 4 since FY2020.
28	Cisco Systems Inc. 5 awardees, including Duo Security LLC Top agencies DISA (Defense Information Systems Agency) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$98,620,861	0.7%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; down 21 since FY2020.
29	SMS Data Products Group Inc. Top agencies USAF (Department of the Air Force)	$95,954,410	0.6%	Rank history: #23 in FY2022, #25 in FY2023, #44 in FY2024 and not on the FY2025 list; up 2 since FY2020.
30	Advantaged Solutions, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$92,109,317	0.6%	Rank history: #11 in FY2022, #14 in FY2023, #11 in FY2024 and #10 in FY2025; up 23 since FY2020.
31	L3Harris Technologies, Inc. 12 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and NV5 Geospatial Solutions, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$88,717,278	0.6%	Rank history: #25 in FY2022, #34 in FY2023, #25 in FY2024 and #27 in FY2025; up 12 since FY2020.
32	SES Government Solutions Inc. Through SES Space & Defense, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) USAGM (US Agency for Global Media)	$87,982,771	0.6%	Rank history: #44 in FY2022, #28 in FY2023, #52 in FY2024 and not on the FY2025 list; up 150 since FY2020.
33	Accenture Federal Services LLC 2 awardees, including Phase One Consulting Group, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOS (Department of State)	$87,158,391	0.6%	Rank history: #28 in FY2022, #26 in FY2023, #18 in FY2024 and #21 in FY2025; up 9 since FY2020.
34	DLT Solutions LLC 3 awardees, including TECH Data Corporation and TECH Data Government Solutions, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DOJ (Department of Justice)	$87,036,342	0.6%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
35	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) NSA (Department of Defense National Security Agency) Navy (Department of the Navy)	$85,910,375	0.6%	Rank history: #29 in FY2022, #19 in FY2023, #21 in FY2024 and #79 in FY2025; up 6 since FY2020.
36	CA Inc. Top agencies SSA (Social Security Administration) Treasury (Department of the Treasury) DISA (Defense Information Systems Agency)	$85,511,452	0.6%	Rank history: #34 in FY2022, #41 in FY2023, #96 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
37	Dataminr, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State) AOUSC (Administrative Office of the U.S. Courts)	$85,058,967	0.6%	Rank history: #38 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
38	Thomson Reuters (Tax & Accounting) Inc. 6 awardees, including West Publishing Corporation, Thomson Reuters (Markets) LLC and Reuters News & Media Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$79,843,882	0.5%	Rank history: #27 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
39	Ba-Zai JV, LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$74,825,228	0.5%	Rank history: #51 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
40	Blue Cross & Blue Shield of South Carolina Through Companion Data Services LLC Top agencies HHS (Department of Health and Human Services)	$71,836,467	0.5%	Rank history: #46 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
41	T-Mobile US Inc. 6 awardees, including T-Mobile Usa, Inc., T-Mobile Secure Federal Operations LLC and Sprint Communications Co LP Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$70,771,450	0.5%	Rank history: #78 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 67 since FY2020.
42	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top agencies DHS (Department of Homeland Security)	$69,829,190	0.5%	Rank history: #36 in FY2022, #24 in FY2023, #28 in FY2024 and not on the FY2025 list; up 27 since FY2020.
43	The Boeing Company 7 awardees, including Boeing Comsatcom Services, Inc., Tapestry Solutions, Inc. and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$69,614,237	0.5%	Rank history: #22 in FY2022, #18 in FY2023, #32 in FY2024 and #33 in FY2025; up 4 since FY2020.
44	Indyne, Inc. Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$69,565,477	0.5%	Rank history: #33 in FY2022, #32 in FY2023, #35 in FY2024 and #28 in FY2025; up 1 since FY2020.
45	Abacus Technology Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$60,106,965	0.4%	Rank history: #47 in FY2022, #45 in FY2023, #51 in FY2024 and not on the FY2025 list; up 26 since FY2020.
46	Artel LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$59,723,927	0.4%	Rank history: #48 in FY2022, #44 in FY2023, #36 in FY2024 and #55 in FY2025; up 46 since FY2020.
47	FSC Colorado Holdings Inc. Through FSC Edge Corp. Top agencies Commerce (Department of Commerce) DOT (Department of Transportation)	$57,028,795	0.4%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
48	Advanced Technology Systems Inc. 2 awardees, including Salient Federal Solutions, Inc. Top agencies Army (Department of the Army)	$57,028,013	0.4%	Rank history: not on the FY2022 list, #46 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
49	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) Army (Department of the Army)	$54,398,707	0.4%	Rank history: #43 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
50	IQ Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$51,443,229	0.3%	Rank history: not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; up 91 since FY2020.
51	CDO Technologies Inc. Top agencies USAF (Department of the Air Force)	$50,319,833	0.3%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
52	American Systems Corporation Top agencies USAF (Department of the Air Force) GSA (General Services Administration) DHS (Department of Homeland Security)	$48,123,039	0.3%	Rank history: #81 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2020.
53	Sierra Nevada Company, LLC Top agencies Army (Department of the Army) DCSA (Defense Counterintelligence and Security Agency) USSOCOM (United States Special Operations Command)	$47,662,575	0.3%	Rank history: #24 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; up 30 since FY2020.
54	Westat, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$46,565,091	0.3%	Rank history: #53 in FY2022, #51 in FY2023, #54 in FY2024 and #83 in FY2025; up 4 since FY2020.
55	Deloitte LLP 4 awardees, including Deloitte Consulting LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOL (Department of Labor)	$44,195,585	0.3%	Rank history: not on the FY2022–FY2025 lists; up 223 since FY2020.
56	At&T Enterprises, LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury) HUD (Department of Housing and Urban Development)	$44,117,554	0.3%	Rank history: not on the FY2022–FY2023 lists, #59 in FY2024 and #65 in FY2025; down 37 since FY2020.
57	Oil Price Information Service LLC 10 awardees, including IHS Global Inc., R.l. Polk & Co and Markit North America Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$42,542,682	0.3%	Rank history: #56 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
58	Mythics, LLC 2 awardees, including Emergent, LLC Top agencies DHS (Department of Homeland Security) SSA (Social Security Administration) Treasury (Department of the Treasury)	$39,751,402	0.3%	Rank history: #57 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
59	Granite Telecommunications, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHA (Defense Health Agency)	$39,243,246	0.3%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 56 since FY2020.
60	Maximus Inc. Through Maximus Federal Services, Inc. Top agencies HHS (Department of Health and Human Services) CFPB (Consumer Financial Protection Bureau) Treasury (Department of the Treasury)	$39,057,776	0.3%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
61	Sumaria Systems, LLC Top agencies USAF (Department of the Air Force)	$38,229,601	0.3%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
62	Valdez International Corporation Top agencies USAF (Department of the Air Force)	$37,605,721	0.3%	Rank history: #77 in FY2022, #66 in FY2023, #91 in FY2024 and not on the FY2025 list; up 4 since FY2020.
63	Technica Corporation Top agencies USAF (Department of the Air Force) ED (Department of Education) Navy (Department of the Navy)	$36,549,041	0.2%	Rank history: #68 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
64	Pfsweb Inc. Through Priority Fulfillment Services, Inc. Top agencies Treasury (Department of the Treasury)	$36,199,187	0.2%	Rank history: #62 in FY2022, #38 in FY2023, #60 in FY2024 and not on the FY2025 list; up 80 since FY2020.
65	Amazon.com, Inc. Through Amazon Web Services, Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy) USAF (Department of the Air Force)	$35,123,178	0.2%	Rank history: not on the FY2022 list, #27 in FY2023, #67 in FY2024 and not on the FY2025 list; up 45 since FY2020.
66	LGS Innovations LLC Top agencies Army (Department of the Army)	$34,599,156	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Tsymmetry Inc. Top agencies DOS (Department of State)	$34,442,758	0.2%	Rank history: #83 in FY2022, #59 in FY2023, #57 in FY2024 and not on the FY2025 list; up 7 since FY2020.
68	Manhattan Telecommunications Corporation LLC Top agencies SSA (Social Security Administration) Navy (Department of the Navy) USDA (Department of Agriculture)	$33,706,000	0.2%	Rank history: #55 in FY2022, #35 in FY2023, #39 in FY2024 and #48 in FY2025; up 44 since FY2020.
69	Lumen Technologies Government Solutions, Inc. 2 awardees Top agencies DISA (Defense Information Systems Agency) FEC (Federal Election Commission) USITC (International Trade Commission)	$33,545,227	0.2%	Rank history: #37 in FY2022, not on the FY2023 list, #23 in FY2024 and #7 in FY2025; new, not ranked in FY2020.
70	Intelsat General Communications LLC Top agencies Army (Department of the Army) DMA (Defense Media Activity) USAF (Department of the Air Force)	$33,399,671	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Fedresults, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) SSA (Social Security Administration)	$32,237,833	0.2%	Rank history: #64 in FY2022, #94 in FY2023, #89 in FY2024 and not on the FY2025 list; up 20 since FY2020.
72	Change Healthcare Technologies LLC 3 awardees, including Change Healthcare Holdings, Inc. and Change Healthcare Operations, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$30,897,131	0.2%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 268 since FY2020.
73	Thomas Scientific LLC 6 awardees, including Unison Software Inc., Hirevue Inc. and Unison Cost Engineering LLC Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services) DFC (International Development Finance Corporation)	$29,653,703	0.2%	Rank history: #49 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Nana Regional Corporation Inc 8 awardees, including Cloud Lake Technology LLC, Truestone, LLC and Tundra Federal LLC Top agencies Army (Department of the Army) DOS (Department of State) Navy (Department of the Navy)	$28,943,995	0.2%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
75	BAE Systems PLC 3 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Information and Electronic Systems Integration Inc. and BAE Systems Australia Limited Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$28,748,903	0.2%	Rank history: #69 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
76	Avaya Federal Solutions Inc. 2 awardees Top agencies SSA (Social Security Administration) Army (Department of the Army)	$28,535,335	0.2%	Rank history: #42 in FY2022, #49 in FY2023, #83 in FY2024 and not on the FY2025 list; up 8 since FY2020.
77	Arlington Capital Partners IV, L.P. 4 awardees, including Tyto Athene, LLC and Mutual Telecom Services Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) SSA (Social Security Administration)	$28,139,279	0.2%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
78	Ebsco Industries Inc. 4 awardees, including Yankee Book Peddler Incorporated Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DHA (Defense Health Agency)	$27,822,101	0.2%	Rank history: #76 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 57 since FY2020.
79	National Capitol Contracting LLC 43 awardees, including Comcast Government Services LLC, Comcast Business Communications, LLC and Universal City Studios Productions LLLP Top agencies DCMA (Defense Contract Management Agency) SSA (Social Security Administration) DISA (Defense Information Systems Agency)	$27,815,281	0.2%	Rank history: #82 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; up 63 since FY2020.
80	Science Applications International Corporation 3 awardees, including Engility Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$27,467,288	0.2%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
81	Global Telecom & Technology Inc. 3 awardees, including GTT Global Telecom Government Services, LLC and GTT Americas, LLC Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$26,800,445	0.2%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
82	BT North America Inc. 2 awardees, including 22Nd Century Networks, Inc. and British Telecommunications Public Limited Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$26,136,470	0.2%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
83	The Logistics Co Incorporated Top agencies Army (Department of the Army)	$26,108,020	0.2%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
84	Verizon Business Network Services LLC Top agencies DISA (Defense Information Systems Agency) DOL (Department of Labor) Commerce (Department of Commerce)	$25,768,772	0.2%	Rank history: not on the FY2022–FY2025 lists; up 71 since FY2020.
85	Wolters Kluwer N.V. 11 awardees, including Uptodate, Inc., Ovid Technologies, Inc. and Wolters Kluwer Financial Services, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$24,979,250	0.2%	Rank history: #87 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
86	Harvard Pilgrim Health Care, Inc. Top agencies HHS (Department of Health and Human Services)	$24,874,568	0.2%	Rank history: not on the FY2022–FY2023 lists, #87 in FY2024 and #87 in FY2025; up 2 since FY2020.
87	Inserso Corporation Top agencies DHS (Department of Homeland Security)	$24,353,880	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
88	Eagle Harbor, LLC Top agencies DOJ (Department of Justice)	$24,348,138	0.2%	Rank history: #70 in FY2022, #58 in FY2023, #37 in FY2024 and #38 in FY2025; up 43 since FY2020.
89	Cogitan LLC Top agencies USAF (Department of the Air Force)	$24,188,448	0.2%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
90	NCR Corporation Through NCR Government Systems LLC Top agencies DISA (Defense Information Systems Agency)	$23,775,128	0.2%	Rank history: #100 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
91	Microtechnologies LLC 2 awardees, including Defined Technologies, LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Navy (Department of the Navy)	$23,707,097	0.2%	Rank history: #45 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; down 35 since FY2020.
92	Ritenet Corp. Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$22,873,927	0.2%	Rank history: not on the FY2022 list, #86 in FY2023, #99 in FY2024 and #99 in FY2025; up 7 since FY2020.
93	Koniag, Inc. 5 awardees, including Digitized Schematic Solutions LLC, Eagle Harbor Solutions LLC and Arlluk Technology Solutions LLC Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture) DHA (Defense Health Agency)	$22,447,428	0.2%	Rank history: #59 in FY2022, #47 in FY2023, #70 in FY2024 and not on the FY2025 list; up 86 since FY2020.
94	Riva Solutions Inc. Top agencies DOL (Department of Labor) Army (Department of the Army) Navy (Department of the Navy)	$22,434,643	0.2%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 142 since FY2020.
95	American Chemical Society 2 awardees Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$22,345,059	0.1%	Rank history: #84 in FY2022, #83 in FY2023, #92 in FY2024 and not on the FY2025 list; up 315 since FY2020.
96	Consulting Services Group, LLC Top agencies Army (Department of the Army)	$22,113,324	0.1%	Rank history: #74 in FY2022, #43 in FY2023, #38 in FY2024 and #29 in FY2025; new, not ranked in FY2020.
97	Arctic Slope Regional Corporation 4 awardees, including Asrc Federal System Solutions LLC and Asrc Federal Data Solutions, LLC Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DOS (Department of State)	$21,813,503	0.1%	Rank history: #96 in FY2022, #90 in FY2023, #80 in FY2024 and #66 in FY2025; up 105 since FY2020.
98	The Mathworks, Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$21,649,801	0.1%	Rank history: #88 in FY2022, #71 in FY2023, #71 in FY2024 and #60 in FY2025; up 27 since FY2020.
99	Full Spectrum Operations LLC Top agencies USAF (Department of the Air Force)	$21,451,880	0.1%	Rank history: #61 in FY2022, not on the FY2023 list, #74 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
100	UnitedHealth Group Incorporated 4 awardees, including The Lewin Group, Inc., Optum360 LLC and Optumrx Administrative Services, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$21,391,098	0.1%	Rank history: not on the FY2022–FY2025 lists; up 133 since FY2020.

Rankings for the codes under NAICS 51

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 $14.9 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.

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