Top 100 Contractors in PSC D301: ADP Facility Operation and Maintenance Services, FY2021

Name: Top 100 Contractors in PSC D301: ADP Facility Operation and Maintenance Services, FY2021
Creator: GovTribe

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

The top 10 won 32% of FY2021 PSC D301 contract dollars

Contract obligations: $1,682,077,716 Net of deobligations, by contracts coded PSC D301
Contractors: 368 Parent companies with an obligation
Largest contractor: HP Enterprise Services LLC $108 million, 4.8% 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	HP Enterprise Services LLC 6 awardees, including Peraton Enterprise Solutions LLC, Peraton Government Communications Inc. and Knight Point Systems, LLC Top agencies DHRA (Defense Human Resources Activity) ED (Department of Education) DOL (Department of Labor)	$107,957,002	4.8%	Rank history: #1 in FY2022, #1 in FY2023, #5 in FY2024 and not on the FY2025 list; up 172 since FY2020.
2	Perspecta Inc. 4 awardees, including Peraton Enterprise Solutions LLC, Peraton Technology Services Inc. and Knight Point Systems, LLC Top agencies DOL (Department of Labor) DHRA (Defense Human Resources Activity) ED (Department of Education)	$101,954,392	4.6%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
3	Lockheed Martin Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$87,333,466	3.9%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
4	General Dynamics Corporation 5 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics One Source LLC Top agencies SEC (Securities and Exchange Commission) DARPA (Defense Advanced Research Projects Agency) DISA (Defense Information Systems Agency)	$84,827,249	3.8%	Rank history: #2 in FY2022, #2 in FY2023, #4 in FY2024 and #3 in FY2025; down 1 since FY2020.
5	SRA International Inc. Through General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services)	$70,981,942	3.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
6	Accenture Federal Services LLC Top agencies DHS (Department of Homeland Security)	$69,039,214	3.1%	Rank history: #4 in FY2022, #10 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
7	Dev Technology Group Inc. Top agencies DHS (Department of Homeland Security)	$64,210,976	2.9%	Rank history: #5 in FY2022, #4 in FY2023, #3 in FY2024 and not on the FY2025 list; up 1 since FY2020.
8	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DTRA (Defense Threat Reduction Agency) GSA (General Services Administration) DOL (Department of Labor)	$54,391,976	2.4%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
9	Securigence LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$41,472,139	1.9%	Rank history: #3 in FY2022, #3 in FY2023, #1 in FY2024 and #1 in FY2025; new, not ranked in FY2020.
10	Business Integra Technology Solutions, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$32,387,930	1.5%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
11	Diversified Technical Services, Inc. Top agencies USAF (Department of the Air Force)	$31,989,507	1.4%	Rank history: #8 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
12	Winnebago Tribe of Nebraska Through HCI Management Services Company Top agencies DOS (Department of State)	$31,925,000	1.4%	Rank history: #22 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
13	Agile Defense, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$31,780,955	1.4%	Rank history: #56 in FY2022, not on the FY2023–FY2024 lists and #19 in FY2025; up 6 since FY2020.
14	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies DHRA (Defense Human Resources Activity) Army (Department of the Army)	$31,668,464	1.4%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
15	Remedybiz, Inc. Top agencies HHS (Department of Health and Human Services)	$31,441,264	1.4%	Rank history: #11 in FY2022, #7 in FY2023, #8 in FY2024 and not on the FY2025 list; up 17 since FY2020.
16	Jacobs Engineering Group Inc. 3 awardees, including Amentum Technology, Inc. and Blue Canopy Group, LLC Top agencies USTRANSCOM (Department of Defense United States Transportation Command) EPA (Environmental Protection Agency)	$31,114,463	1.4%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
17	Directviz Solutions, LLC Top agencies Army (Department of the Army)	$29,875,653	1.3%	Rank history: #9 in FY2022, #5 in FY2023, #6 in FY2024 and #5 in FY2025; down 2 since FY2020.
18	Nana Regional Corporation Inc 7 awardees, including Sava Workforce Solutions LLC, Qivliq Commercial Group LLC and Tuvli LLC Top agencies DOJ (Department of Justice) Army (Department of the Army) Commerce (Department of Commerce)	$27,799,677	1.2%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
19	Criterion Systems, L.L.C. Top agencies DOE (Department of Energy) Commerce (Department of Commerce)	$27,262,734	1.2%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
20	22Nd Century Technologies, Inc. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) DHA (Defense Health Agency)	$25,992,966	1.2%	Rank history: #14 in FY2022, #8 in FY2023, #10 in FY2024 and #6 in FY2025; down 3 since FY2020.
21	All Points Logistics, LLC Top agencies NASA (National Aeronautics and Space Administration)	$24,670,671	1.1%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
22	Science Applications International Corporation 4 awardees, including Engility Services, LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) DOJ (Department of Justice)	$24,299,939	1.1%	Rank history: #16 in FY2022, #9 in FY2023, #9 in FY2024 and #7 in FY2025; up 4 since FY2020.
23	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. Top agencies NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$22,404,037	1.0%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
24	Mantech International Corporation 2 awardees, including Infozen, LLC Top agencies DHS (Department of Homeland Security)	$20,276,510	0.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Arctic Slope Regional Corporation 2 awardees, including Inuteq, LLC Top agencies NASA (National Aeronautics and Space Administration)	$20,189,558	0.9%	Rank history: not on the FY2022–FY2023 lists, #45 in FY2024 and #23 in FY2025; down 18 since FY2020.
26	Resource Management Concepts, Inc. Top agencies Navy (Department of the Navy)	$19,859,294	0.9%	Rank history: #12 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
27	Advanced Technology Systems Inc. 2 awardees, including Salient Crgt, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$19,048,037	0.9%	Rank history: #24 in FY2022, not on the FY2023 list, #7 in FY2024 and not on the FY2025 list; up 16 since FY2020.
28	Teksynap Corporation Top agencies DTRA (Defense Threat Reduction Agency)	$18,382,364	0.8%	Rank history: #6 in FY2022, #15 in FY2023, #17 in FY2024 and #11 in FY2025; up 8 since FY2020.
29	STG Group, Inc. 2 awardees, including STG LLC and Sos International LLC Top agencies Army (Department of the Army)	$17,313,191	0.8%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
30	Intepros Federal Incorporated Top agencies DOE (Department of Energy)	$17,159,526	0.8%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
31	Procentrix, LLC Top agencies DHS (Department of Homeland Security)	$14,829,962	0.7%	Rank history: #21 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2020.
32	Smartronix LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$13,126,298	0.6%	Rank history: #47 in FY2022, not on the FY2023 list, #16 in FY2024 and not on the FY2025 list; up 82 since FY2020.
33	Soft TECH Consulting, Inc. Top agencies DOS (Department of State)	$12,865,787	0.6%	Rank history: #20 in FY2022, #13 in FY2023, #12 in FY2024 and not on the FY2025 list; up 53 since FY2020.
34	Innovative Management & Technology Approaches Inc. Top agencies Commerce (Department of Commerce)	$12,249,890	0.6%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
35	Tsymmetry Inc. Top agencies DOS (Department of State)	$11,999,947	0.5%	Rank history: #23 in FY2022, #20 in FY2023, #11 in FY2024 and #9 in FY2025; up 15 since FY2020.
36	Valdez International Corporation Top agencies DOI (Department of the Interior)	$11,922,319	0.5%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
37	Intelligent Waves LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$11,402,514	0.5%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
38	Goldbelt, Incorporated 2 awardees, including Goldbelt Hawk L.L.C. and Peregrine Technical Solutions, LLC Top agencies DOI (Department of the Interior) NSF (National Science Foundation) DCSA (Defense Counterintelligence and Security Agency)	$10,614,206	0.5%	Rank history: #28 in FY2022, #17 in FY2023, #13 in FY2024 and not on the FY2025 list; up 10 since FY2020.
39	Unisys Corporation Top agencies DOT (Department of Transportation)	$9,998,239	0.4%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
40	Maximus Federal Technology Solutions, LLC Top agencies DOE (Department of Energy)	$9,634,432	0.4%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
41	Obxtek Inc. Top agencies DOL (Department of Labor)	$9,453,277	0.4%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
42	Nexgen Data Systems Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$9,197,544	0.4%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
43	Advanced Quality Alliance, LLC Top agencies DOT (Department of Transportation)	$8,508,658	0.4%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
44	The Greentree Group, Inc. Top agencies USAF (Department of the Air Force)	$8,280,943	0.4%	Rank history: #33 in FY2022, #16 in FY2023, #23 in FY2024 and not on the FY2025 list; up 8 since FY2020.
45	Chickasaw Defense Logistics, LLC Top agencies USAF (Department of the Air Force)	$7,272,284	0.3%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; up 29 since FY2020.
46	The Chenega Corporation Through Chenega Technical Innovations, LLC Top agencies Army (Department of the Army)	$6,806,823	0.3%	Rank history: #35 in FY2022, #24 in FY2023, #78 in FY2024 and not on the FY2025 list; up 114 since FY2020.
47	Potawatomi Business Development Corp Through 1Prospect Technologies, LLC Top agencies Army (Department of the Army)	$6,788,296	0.3%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 57 since FY2020.
48	Milvets Systems Technology, Inc. Top agencies Army (Department of the Army)	$6,501,991	0.3%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
49	Kaihonua LLC Top agencies Army (Department of the Army)	$6,229,234	0.3%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
50	Countertrade Products, Inc. Top agencies HUD (Department of Housing and Urban Development)	$6,106,219	0.3%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
51	Tmci the Mcvey Company, Inc. Top agencies DFAS (Defense Finance and Accounting Service)	$5,973,494	0.3%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
52	Stratascor, LLC Top agencies Navy (Department of the Navy)	$5,698,158	0.3%	Rank history: not on the FY2022–FY2025 lists; down 30 since FY2020.
53	Index Analytics LLC Top agencies HHS (Department of Health and Human Services)	$5,667,857	0.3%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
54	Capgemini Government Solutions LLC Top agencies USDA (Department of Agriculture)	$5,590,639	0.3%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 149 since FY2020.
55	Nationwide It Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,574,839	0.3%	Rank history: #59 in FY2022, #25 in FY2023, #19 in FY2024 and #13 in FY2025; up 16 since FY2020.
56	Tristar, Inc. Top agencies Navy (Department of the Navy)	$5,517,529	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
57	Comtech Telecommunications Corp. Through Comtech Mobile Datacom LLC Top agencies Army (Department of the Army)	$5,449,418	0.2%	Rank history: not on the FY2022–FY2025 lists; up 133 since FY2020.
58	Spry Methods, Inc. Top agencies DOI (Department of the Interior)	$4,987,292	0.2%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 37 since FY2020.
59	Apogee Engineering, LLC Top agencies USAF (Department of the Air Force)	$4,975,942	0.2%	Rank history: #36 in FY2022, not on the FY2023 list, #15 in FY2024 and not on the FY2025 list; up 25 since FY2020.
60	Vista Defense Technologies, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$4,886,490	0.2%	Rank history: #39 in FY2022, #61 in FY2023, #42 in FY2024 and not on the FY2025 list; up 122 since FY2020.
61	Cayuse Holdings LLC Through Native Hawaiian Veterans LLC Top agencies DOI (Department of the Interior)	$4,789,462	0.2%	Rank history: #62 in FY2022, #19 in FY2023, #22 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
62	Global Commerce and Services, LLC Top agencies USAF (Department of the Air Force)	$4,696,192	0.2%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; up 28 since FY2020.
63	Nuaxis LLC Top agencies DOI (Department of the Interior) PBGC (Pension Benefit Guaranty Corporation)	$4,681,903	0.2%	Rank history: #45 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
64	Abacus Technology Corporation Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$4,637,728	0.2%	Rank history: #78 in FY2022, #63 in FY2023, #56 in FY2024 and #38 in FY2025; down 20 since FY2020.
65	Choisys Technology Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$4,586,894	0.2%	Rank history: #43 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2020.
66	Bristol Bay Native Corporation Through Vista Technical Services, LLC Top agencies Army (Department of the Army)	$4,538,411	0.2%	Rank history: #32 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
67	Abacus Solutions Group LLC Top agencies DHS (Department of Homeland Security)	$4,269,410	0.2%	Rank history: #40 in FY2022, #26 in FY2023, #18 in FY2024 and #12 in FY2025; up 66 since FY2020.
68	Data Basis LLC Top agencies HHS (Department of Health and Human Services)	$4,269,206	0.2%	Rank history: #76 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
69	Lintech Global Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,266,848	0.2%	Rank history: #44 in FY2022, #49 in FY2023, #39 in FY2024 and not on the FY2025 list; up 81 since FY2020.
70	Breakpoint Labs, L.L.C. Top agencies Army (Department of the Army)	$4,208,386	0.2%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
71	Interimage, Inc. Top agencies DISA (Defense Information Systems Agency)	$4,107,304	0.2%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
72	Halvik LLC Through SP Systems, Inc. Top agencies Army (Department of the Army)	$4,025,324	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
73	Maximus Inc. Through Maximus Federal Technology Solutions, LLC Top agencies DOE (Department of Energy)	$3,946,808	0.2%	Rank history: #13 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Trident Systems LLC Top agencies USAF (Department of the Air Force)	$3,857,443	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 29 since FY2020.
75	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top agencies EPA (Environmental Protection Agency) Commerce (Department of Commerce)	$3,779,554	0.2%	Rank history: #67 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
76	RTL Networks, Inc. Top agencies Navy (Department of the Navy)	$3,323,122	0.1%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
77	Presidio Government Solutions LLC Top agencies DISA (Defense Information Systems Agency)	$3,322,085	0.1%	Rank history: #61 in FY2022, #58 in FY2023, #29 in FY2024 and #20 in FY2025; up 36 since FY2020.
78	Federal Acquisition Services Alliant, Joint Venture LLC Top agencies Navy (Department of the Navy)	$3,311,783	0.1%	Rank history: #53 in FY2022, #34 in FY2023, #28 in FY2024 and #31 in FY2025; up 10 since FY2020.
79	Dynamic Systems Inc. Top agencies DOL (Department of Labor) NASA (National Aeronautics and Space Administration)	$3,254,454	0.1%	Rank history: #54 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
80	AV3 Inc. Top agencies Army (Department of the Army)	$3,245,352	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Amar Health IT, LLC Top agencies DHS (Department of Homeland Security)	$3,193,342	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 36 since FY2020.
82	Lumen Technologies, Inc. 3 awardees, including Lumen Technologies Government Solutions, Inc. Top agencies NASA (National Aeronautics and Space Administration) SBA (Small Business Administration)	$3,183,118	0.1%	Rank history: #57 in FY2022, #87 in FY2023, #33 in FY2024 and #44 in FY2025; down 2 since FY2020.
83	Afognak Native Corporation Through Alutiiq Solutions, LLC Top agencies DHA (Defense Health Agency)	$3,073,020	0.1%	Rank history: not on the FY2022–FY2025 lists; down 29 since FY2020.
84	Octo Consulting Group Inc. Top agencies HHS (Department of Health and Human Services)	$3,071,474	0.1%	Rank history: #88 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
85	Horus Technology Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$2,981,643	0.1%	Rank history: #58 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
86	Oxford Government Consulting, LLC Top agencies DOL (Department of Labor)	$2,942,508	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
87	Bering Straits Native Corporation Through Bering Global Solutions, LLC Top agencies OPM (Office of Personnel Management)	$2,895,143	0.1%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
88	Spec, LLC Top agencies OSD (Office of the Secretary of Defense) DISA (Defense Information Systems Agency)	$2,818,303	0.1%	Rank history: #75 in FY2022, #46 in FY2023, #27 in FY2024 and #18 in FY2025; new, not ranked in FY2020.
89	Native Hawaiian Veterans LLC Top agencies DOI (Department of the Interior)	$2,762,795	0.1%	Rank history: not on the FY2022–FY2023 lists, #41 in FY2024 and not on the FY2025 list; up 31 since FY2020.
90	Recovery Point Systems Inc. Top agencies CFTC (Commodity Futures Trading Commission) DOE (Department of Energy)	$2,616,370	0.1%	Rank history: #79 in FY2022, #72 in FY2023, #50 in FY2024 and not on the FY2025 list; up 55 since FY2020.
91	Blackwatch International Corporation Top agencies DMEA (Defense Microelectronics Activity)	$2,533,246	0.1%	Rank history: #96 in FY2022, #64 in FY2023, #59 in FY2024 and not on the FY2025 list; down 22 since FY2020.
92	Akira Technologies Inc. Top agencies DISA (Defense Information Systems Agency)	$2,283,567	0.1%	Rank history: not on the FY2022–FY2025 lists; up 124 since FY2020.
93	Strativia LLC Top agencies USDA (Department of Agriculture)	$2,230,168	0.1%	Rank history: #89 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 43 since FY2020.
94	Kapsuun Group, LLC Top agencies Navy (Department of the Navy)	$2,229,677	0.1%	Rank history: #66 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
95	Katmai Management Services LLC Top agencies Army (Department of the Army)	$2,213,255	0.1%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
96	Cfocus Software Incorporated Top agencies Army (Department of the Army)	$2,161,163	0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
97	American Systems Corporation Top agencies USAF (Department of the Air Force)	$2,132,011	0.1%	Rank history: #65 in FY2022, #41 in FY2023, #30 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
98	Hewlett Packard Enterprise Co 2 awardees, including Cray Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$2,068,049	0.1%	Rank history: #63 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 43 since FY2020.
99	KLC Network Services, Inc. Top agencies EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$2,060,114	0.1%	Rank history: #64 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
100	The Coleman Group Inc. Top agencies Navy (Department of the Navy)	$2,052,072	0.1%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.

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100 of 368 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 $2.23 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 D301 contractors in FY2021?

1. HP Enterprise Services LLC ($108M), 2. Perspecta Inc. ($102M), 3. Lockheed Martin Corporation ($87.3M), 4. General Dynamics Corporation ($84.8M), 5. SRA International Inc. ($71M), 6. Accenture Federal Services LLC ($69M), 7. Dev Technology Group Inc. ($64.2M), 8. Booz Allen Hamilton Holding Corporation ($54.4M), 9. Securigence LLC ($41.5M), 10. Business Integra Technology Solutions, Inc. ($32.4M).

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