Top 100 Contractors in PSC D399: Other ADP and Telecommunications Services (includes data storage on tapes, compact disks, etc.), FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Accenture Federal Services LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency)	$545,380,074	13.4%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
2	Booz Allen Hamilton Holding Corporation 6 awardees, including Booz Allen Hamilton Inc. and Liberty It Solutions LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$281,353,402	6.9%	Rank history: #4 in FY2021, #1 in FY2022, #1 in FY2023 and #13 in FY2025; down 1 since FY2023.
3	Science Applications International Corporation 4 awardees Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$189,867,528	4.6%	Rank history: #6 in FY2021, #5 in FY2022, #7 in FY2023 and #2 in FY2025; up 4 since FY2023.
4	CACI International Inc. 6 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and LGS Innovations LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) DFAS (Defense Finance and Accounting Service)	$177,976,286	4.4%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and #5 in FY2025; down 2 since FY2023.
5	Leidos Holdings, Inc. 11 awardees, including Leidos, Inc. and 1901 Group, LLC Top agencies DOJ (Department of Justice) Army (Department of the Army) USAF (Department of the Air Force)	$153,149,434	3.8%	Rank history: #1 in FY2021, #3 in FY2022, #4 in FY2023 and #7 in FY2025; down 1 since FY2023.
6	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)	$144,697,966	3.5%	Rank history: #7 in FY2021, #8 in FY2022, #12 in FY2023 and not on the FY2025 list; up 6 since FY2023.
7	B 3 Group, LLC Top agencies VA (Department of Veterans Affairs)	$136,472,689	3.3%	Rank history: #22 in FY2021, not on the FY2022–FY2023 lists and #37 in FY2025; returned.
8	At&T Inc. 13 awardees, including At&T Enterprises, LLC, New Cingular Wireless Services, Inc. and Southwestern Bell Telephone Company Top agencies DOJ (Department of Justice) DHA (Defense Health Agency) NLRB (National Labor Relations Board)	$129,121,973	3.2%	Rank history: #36 in FY2021, #12 in FY2022, #9 in FY2023 and #6 in FY2025; up 1 since FY2023.
9	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top agencies DOS (Department of State) Army (Department of the Army) DHRA (Defense Human Resources Activity)	$108,967,293	2.7%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2023 list and #4 in FY2025; returned.
10	Verizon 5 awardees, including Verizon Business Network Services LLC and Cellco Partnership Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) NRC (Nuclear Regulatory Commission)	$104,705,419	2.6%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
11	General Dynamics Corporation 9 awardees, including General Dynamics Information Technology, Inc. Top agencies DISA (Defense Information Systems Agency) Army (Department of the Army) GSA (General Services Administration)	$103,465,158	2.5%	Rank history: #2 in FY2021, #6 in FY2022, #8 in FY2023 and #9 in FY2025; down 3 since FY2023.
12	Caci Technologies LLC 5 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$81,021,775	2.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	By Light Professional It Services LLC Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs)	$77,223,971	1.9%	Rank history: #15 in FY2021, #21 in FY2022, #15 in FY2023 and #11 in FY2025; up 2 since FY2023.
14	ManTech International Corporation 5 awardees, including Mantech Advanced Systems International, Inc. Top agencies DHS (Department of Homeland Security) DOS (Department of State) Army (Department of the Army)	$76,042,979	1.9%	Rank history: #14 in FY2021, #19 in FY2022, #10 in FY2023 and #12 in FY2025; down 4 since FY2023.
15	Octo Consulting Group Inc. 4 awardees, including Sevatec LLC and B 3 Group, LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$69,018,842	1.7%	Rank history: #31 in FY2021, #9 in FY2022, #6 in FY2023 and #32 in FY2025; down 9 since FY2023.
16	Oracle Health Government Services Inc. Top agencies VA (Department of Veterans Affairs)	$61,528,839	1.5%	Rank history: not on the FY2021 list, #55 in FY2022, #16 in FY2023 and not on the FY2025 list; unchanged since FY2023.
17	HP Enterprise Services LLC 3 awardees, including Peraton Enterprise Solutions LLC and Peraton Inc. Top agencies DOS (Department of State) Army (Department of the Army) DISA (Defense Information Systems Agency)	$54,522,521	1.3%	Rank history: #26 in FY2021, #7 in FY2022, #5 in FY2023 and not on the FY2025 list; down 12 since FY2023.
18	Iridium Government Services LLC Top agencies DISA (Defense Information Systems Agency)	$54,415,494	1.3%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
19	Advanced Technology Systems Inc. 4 awardees, including Salient Federal Solutions, Inc. Top agencies GAO (Government Accountability Office) Army (Department of the Army)	$40,713,912	1.0%	Rank history: #24 in FY2021, #89 in FY2022, #14 in FY2023 and not on the FY2025 list; down 5 since FY2023.
20	Planet Technologies, Inc. Top agencies DOI (Department of the Interior)	$38,585,797	0.9%	Rank history: not on the FY2021 list, #45 in FY2022, #29 in FY2023 and #14 in FY2025; up 9 since FY2023.
21	CGI Federal Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$36,352,691	0.9%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
22	Semanticbits LLC 3 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top agencies HHS (Department of Health and Human Services) GSA (General Services Administration)	$36,209,435	0.9%	Rank history: #34 in FY2021, #34 in FY2022, #25 in FY2023 and not on the FY2025 list; up 3 since FY2023.
23	BAE Systems PLC 2 awardees, including BAE Systems Technology Solutions & Services Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$33,953,173	0.8%	Rank history: #53 in FY2021, #36 in FY2022, #30 in FY2023 and #22 in FY2025; up 7 since FY2023.
24	Accenture Inc. Through Accenture Federal Services LLC Top agencies Army (Department of the Army)	$32,769,446	0.8%	Rank history: not on the FY2021 list, #16 in FY2022, #3 in FY2023 and not on the FY2025 list; down 21 since FY2023.
25	Sparksoft Corporation Top agencies HHS (Department of Health and Human Services)	$31,620,663	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	Network Management Resources Inc. Top agencies MDA (DOD Missile Defense Agency)	$31,294,430	0.8%	Rank history: #55 in FY2021, #44 in FY2022, #33 in FY2023 and #19 in FY2025; up 7 since FY2023.
27	International Business Machines Corporation 3 awardees Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$30,145,106	0.7%	Rank history: #12 in FY2021, #46 in FY2022, #37 in FY2023 and #18 in FY2025; up 10 since FY2023.
28	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) SSA (Social Security Administration)	$29,057,262	0.7%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
29	Validatek-Citi, LLC Top agencies DISA (Defense Information Systems Agency)	$27,745,507	0.7%	Rank history: #65 in FY2021, #43 in FY2022, #35 in FY2023 and #15 in FY2025; up 6 since FY2023.
30	L3Harris Technologies, Inc. 4 awardees Top agencies USAF (Department of the Air Force)	$27,267,758	0.7%	Rank history: #80 in FY2021, #67 in FY2022, #46 in FY2023 and #16 in FY2025; up 16 since FY2023.
31	Leidos, Inc. Top agencies DHRA (Defense Human Resources Activity) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$24,091,082	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Planned Systems International Inc. Top agencies VA (Department of Veterans Affairs)	$24,028,546	0.6%	Rank history: #37 in FY2021, #35 in FY2022, #27 in FY2023 and not on the FY2025 list; down 5 since FY2023.
33	V3Gate, LLC Top agencies SSA (Social Security Administration) USDA (Department of Agriculture) Navy (Department of the Navy)	$22,154,306	0.5%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #26 in FY2025; up 61 since FY2023.
34	NTT Data Services Federal Government, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$22,041,974	0.5%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2025; new.
35	Salient Federal Solutions, Inc. Top agencies Army (Department of the Army)	$20,965,781	0.5%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023 list and #23 in FY2025; returned.
36	Teksynap Corporation Top agencies NRC (Nuclear Regulatory Commission) DTRA (Defense Threat Reduction Agency)	$20,256,357	0.5%	Rank history: #74 in FY2021, #58 in FY2022, #48 in FY2023 and #21 in FY2025; up 12 since FY2023.
37	Karsun Solutions LLC Top agencies GSA (General Services Administration)	$19,184,387	0.5%	Rank history: #87 in FY2021, #82 in FY2022, #40 in FY2023 and #47 in FY2025; up 3 since FY2023.
38	NTT Data Fedhealth, Inc. Top agencies HHS (Department of Health and Human Services)	$18,505,224	0.5%	Rank history: #33 in FY2021, #28 in FY2022, #22 in FY2023 and not on the FY2025 list; down 16 since FY2023.
39	Rei Systems, Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice)	$18,461,291	0.5%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2025; new.
40	Sevatec LLC Top agencies GSA (General Services Administration)	$17,295,724	0.4%	Rank history: #52 in FY2021, not on the FY2022–FY2023 lists and #17 in FY2025; returned.
41	Cubic Digital Intelligence Inc. Top agencies DISA (Defense Information Systems Agency)	$16,513,153	0.4%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
42	Northrop Grumman Corporation 8 awardees, including Northrop Grumman Systems Corporation Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services)	$15,887,983	0.4%	Rank history: #5 in FY2021, #27 in FY2022, #26 in FY2023 and not on the FY2025 list; down 16 since FY2023.
43	ACE Info Solutions LLC Through Guidehouse Digital LLC Top agencies HHS (Department of Health and Human Services)	$13,159,480	0.3%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 340 since FY2023.
44	Guidehouse Digital LLC Top agencies HHS (Department of Health and Human Services)	$12,402,746	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Next Tier Concepts Inc Top agencies Navy (Department of the Navy)	$12,012,226	0.3%	Rank history: not on the FY2021 list, #68 in FY2022, #44 in FY2023 and not on the FY2025 list; down 1 since FY2023.
46	Creative Systems and Consulting L.L.C. Top agencies USDA (Department of Agriculture)	$11,604,828	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Mythics Inc. Through Emergent, LLC Top agencies DOS (Department of State) Commerce (Department of Commerce)	$11,427,182	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Synectics for Management Decisions, Inc. Top agencies NSF (National Science Foundation)	$10,465,285	0.3%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #24 in FY2025; up 29 since FY2023.
49	Compqsoft, Inc. Top agencies DECA (Defense Commissary Agency) Navy (Department of the Navy)	$10,327,290	0.3%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #36 in FY2025; up 24 since FY2023.
50	Cerner Federal Solutions LLC Top agencies VA (Department of Veterans Affairs)	$10,041,042	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; new.
51	TCG Inc. Top agencies HHS (Department of Health and Human Services)	$9,914,464	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and #31 in FY2025; up 14 since FY2023.
52	Turning Point Global Solutions LLC Top agencies HHS (Department of Health and Human Services)	$9,804,510	0.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
53	Conduent Federal Solutions LLC Top agencies USDA (Department of Agriculture)	$9,653,702	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	NCR Government Systems LLC Top agencies DECA (Defense Commissary Agency) Army (Department of the Army)	$9,586,881	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Karthik Consulting LLC Top agencies Navy (Department of the Navy)	$9,521,815	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; up 71 since FY2023.
56	Ad Hoc LLC Top agencies HHS (Department of Health and Human Services)	$9,508,365	0.2%	Rank history: #54 in FY2021, #50 in FY2022, #38 in FY2023 and not on the FY2025 list; down 18 since FY2023.
57	Solutions By Design II, LLC Top agencies HHS (Department of Health and Human Services) DCMA (Defense Contract Management Agency)	$9,323,738	0.2%	Rank history: #84 in FY2021, #70 in FY2022, #55 in FY2023 and #27 in FY2025; down 2 since FY2023.
58	Patriot LLC Top agencies DHS (Department of Homeland Security)	$8,558,914	0.2%	Rank history: not on the FY2021 list, #98 in FY2022, #93 in FY2023 and #28 in FY2025; up 35 since FY2023.
59	The Boeing Company 2 awardees, including Tapestry Solutions, Inc. and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force)	$8,276,031	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, #69 in FY2023 and #30 in FY2025; up 10 since FY2023.
60	Reli Group Inc. Top agencies HHS (Department of Health and Human Services)	$8,185,785	0.2%	Rank history: #91 in FY2021, #92 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
61	Kratos Defense & Security Solutions, Inc. Through Kratos S1, Inc. Top agencies USAF (Department of the Air Force)	$7,823,364	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 37 since FY2023.
62	Tantus Technologies Inc. Through Sikich Federal Inc. Top agencies HHS (Department of Health and Human Services)	$7,571,410	0.2%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
63	A+ Government Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$7,359,521	0.2%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and not on the FY2025 list; up 12 since FY2023.
64	On Assignment, Inc. 3 awardees, including Indrasoft Inc. and ECS Federal, LLC Top agencies DISA (Defense Information Systems Agency)	$7,233,076	0.2%	Rank history: #97 in FY2021, #48 in FY2022, #41 in FY2023 and not on the FY2025 list; down 23 since FY2023.
65	Teracore Inc. Top agencies Treasury (Department of the Treasury)	$6,637,025	0.2%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; up 44 since FY2023.
66	Delta Point LLC Top agencies USAF (Department of the Air Force)	$6,609,328	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Infotrend Incorporated Top agencies SEC (Securities and Exchange Commission)	$6,524,867	0.2%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; down 14 since FY2023.
68	Vsolvit LLC Top agencies Navy (Department of the Navy)	$6,472,063	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 42 since FY2023.
69	Tygart Technology Inc. Top agencies DOJ (Department of Justice)	$6,292,004	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 110 since FY2023.
70	Tista Science and Technology Corporation Top agencies HHS (Department of Health and Human Services) ED (Department of Education) Treasury (Department of the Treasury)	$6,163,624	0.2%	Rank history: #28 in FY2021, #18 in FY2022, #18 in FY2023 and #54 in FY2025; down 52 since FY2023.
71	Tlingit Haida Tribal Business Corporation Through Kira Information Solutions LLC Top agencies USAF (Department of the Air Force)	$6,118,449	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 36 since FY2023.
72	Efiia Consulting LLC Top agencies DOJ (Department of Justice)	$5,734,174	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 77 since FY2023.
73	Pelatron Technologies LLC Top agencies Army (Department of the Army)	$5,694,253	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 38 since FY2023.
74	Decisionpoint Corporation Top agencies Army (Department of the Army)	$5,572,907	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; up 51 since FY2023.
75	Aset Partners Corp. Top agencies DHS (Department of Homeland Security)	$5,510,930	0.1%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
76	Dynanet Corporation Top agencies DCSA (Defense Counterintelligence and Security Agency)	$5,075,732	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2025 list; up 5 since FY2023.
77	LCG Systems LLC Top agencies HHS (Department of Health and Human Services)	$5,074,530	0.1%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and #77 in FY2025; up 92 since FY2023.
78	NCR Corporation Through NCR Government Systems LLC Top agencies DECA (Defense Commissary Agency)	$5,026,039	0.1%	Rank history: #69 in FY2021, #79 in FY2022, #54 in FY2023 and not on the FY2025 list; down 24 since FY2023.
79	Lumen Technologies, Inc. 4 awardees, including Lumen Technologies Government Solutions, Inc. and Centurylink Communications, LLC Top agencies Treasury (Department of the Treasury) RRB (Railroad Retirement Board) EOP (Executive Office of the President)	$4,730,161	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 134 since FY2023.
80	Jacobs Government Services Company 2 awardees, including Amentum Technology, Inc. Top agencies USAF (Department of the Air Force)	$4,713,375	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Digital Infuzion, LLC Top agencies HHS (Department of Health and Human Services)	$4,637,027	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 51 since FY2023.
82	Directviz Solutions, LLC Top agencies USDA (Department of Agriculture)	$4,627,276	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 51 since FY2023.
83	Zimperium, Inc. Top agencies DISA (Defense Information Systems Agency)	$4,553,343	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; up 65 since FY2023.
84	Stellar Innovations & Solutions Inc. Top agencies USAF (Department of the Air Force)	$4,517,447	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and not on the FY2025 list; up 8 since FY2023.
85	Flexion Inc. Top agencies HHS (Department of Health and Human Services)	$4,424,125	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 27 since FY2023.
86	Abacus Technology Corporation Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$4,417,976	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 43 since FY2023.
87	Asgn Incorporated Through ECS Federal, LLC Top agencies DOJ (Department of Justice) DISA (Defense Information Systems Agency)	$4,388,559	0.1%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
88	Belcan Corporation Through Belcan Government Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command)	$4,250,000	0.1%	Rank history: #90 in FY2021, #78 in FY2022, not on the FY2023 list and not on the FY2025 list; up 315 since FY2023.
89	Ardent Management Consulting, LLC Top agencies DHS (Department of Homeland Security)	$4,182,706	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; up 107 since FY2023.
90	Essex Management LLC Top agencies HHS (Department of Health and Human Services)	$4,180,272	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; up 32 since FY2023.
91	Carahsoft Technology Corp Top agencies USDA (Department of Agriculture) USAF (Department of the Air Force) PBGC (Pension Benefit Guaranty Corporation)	$4,169,565	0.1%	Rank history: #17 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 76 since FY2023.
92	Techniko LLC Top agencies DOS (Department of State)	$4,155,199	0.1%	Rank history: #47 in FY2021, #41 in FY2022, #24 in FY2023 and not on the FY2025 list; down 68 since FY2023.
93	Belcan Government Solutions, Inc. Top agencies USSOCOM (United States Special Operations Command)	$4,150,663	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
94	Indrasoft Inc. Top agencies DISA (Defense Information Systems Agency)	$4,104,347	0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
95	LGS Innovations LLC Top agencies Army (Department of the Army)	$4,037,663	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Aermor LLC Top agencies Navy (Department of the Navy)	$3,941,298	0.1%	Rank history: #88 in FY2021, #66 in FY2022, #50 in FY2023 and not on the FY2025 list; down 46 since FY2023.
97	Ironclad Technology Services LLC Top agencies DHS (Department of Homeland Security)	$3,862,594	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 90 since FY2023.
98	Superior Government Solutions LLC Top agencies Army (Department of the Army)	$3,823,598	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 45 since FY2023.
99	Potomacwave Consulting Inc. Through Potomacwave, Inc. Top agencies DOS (Department of State)	$3,777,941	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 82 since FY2023.
100	Cerner Corporation Through Cerner Federal Solutions LLC Top agencies VA (Department of Veterans Affairs)	$3,739,135	0.1%	Rank history: #13 in FY2021, #10 in FY2022, #85 in FY2023 and #68 in FY2025; down 15 since FY2023.

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 $4.08 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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