Top 100 Defense Information Systems Agency Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. Top NAICS codes 541513 Computer Facilities Management Services 517110 Wired Telecommunications Carriers 541330 Engineering Services	$473,042,642	10.8%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	General Dynamics Corporation 9 awardees, including General Dynamics Information Technology, Inc., General Dynamics One Source LLC and General Dynamics Mission Systems, Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services 541513 Computer Facilities Management Services	$216,005,940	4.9%	Rank history: #2 in FY2022, #5 in FY2023, #4 in FY2024 and #5 in FY2025; unchanged since FY2020.
3	Iridium Satellite LLC 3 awardees, including Iridium Government Services LLC Top NAICS codes 517410 Satellite Telecommunications	$206,434,526	4.7%	Rank history: #9 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; up 43 since FY2020.
4	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Riverside Engineering LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$200,048,612	4.6%	Rank history: #5 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2020.
5	By Light Professional It Services LLC 3 awardees, including Phacil, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 517110 Wired Telecommunications Carriers	$105,919,245	2.4%	Rank history: #12 in FY2022, #34 in FY2023, #9 in FY2024 and #14 in FY2025; up 3 since FY2020.
6	International Business Machines Corporation 2 awardees Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services 334111 Electronic Computer Manufacturing	$87,605,630	2.0%	Rank history: #96 in FY2022, #67 in FY2023, not on the FY2024 list and #68 in FY2025; up 10 since FY2020.
7	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$71,733,899	1.6%	Rank history: #7 in FY2022, #10 in FY2023, #8 in FY2024 and #10 in FY2025; up 6 since FY2020.
8	Cisco Systems Inc. Top NAICS codes 511210 Software Publishers	$69,608,281	1.6%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
9	Lumen Technologies, Inc. 10 awardees, including Level 3 Communications, LLC, Lumen Technologies Government Solutions, Inc. and Level 3 Telecom Holdings, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers 517919 All Other Telecommunications	$69,575,937	1.6%	Rank history: #3 in FY2022, #3 in FY2023, #11 in FY2024 and #77 in FY2025; down 2 since FY2020.
10	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services	$67,240,796	1.5%	Rank history: #33 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
11	Vae, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$63,158,535	1.4%	Rank history: #35 in FY2022, #11 in FY2023, #44 in FY2024 and #93 in FY2025; down 1 since FY2020.
12	Perspecta Inc. 3 awardees, including Knight Point Systems, LLC, Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$60,256,494	1.4%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
13	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$59,287,468	1.4%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
14	Sos International LLC Top NAICS codes 541512 Computer Systems Design Services	$54,311,812	1.2%	Rank history: #11 in FY2022, #32 in FY2023, #24 in FY2024 and #28 in FY2025; up 19 since FY2020.
15	Hewlett Packard Enterprise Co 2 awardees Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$53,641,860	1.2%	Rank history: #8 in FY2022, #9 in FY2023, #15 in FY2024 and #19 in FY2025; down 9 since FY2020.
16	Norseman Inc. Top NAICS codes 541519 Other Computer Related Services	$47,567,297	1.1%	Rank history: #34 in FY2022, #50 in FY2023, #57 in FY2024 and #70 in FY2025; up 11 since FY2020.
17	On Assignment, Inc. 2 awardees, including ECS Federal, LLC and Indrasoft Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541519 Other Computer Related Services	$46,934,428	1.1%	Rank history: #37 in FY2022, #59 in FY2023, #99 in FY2024 and not on the FY2025 list; up 8 since FY2020.
18	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541512 Computer Systems Design Services 517919 All Other Telecommunications 541519 Other Computer Related Services	$43,753,288	1.0%	Rank history: #46 in FY2022, not on the FY2023 list, #38 in FY2024 and #25 in FY2025; up 2 since FY2020.
19	HP Enterprise Services LLC 7 awardees, including Peraton Enterprise Solutions LLC, Knight Point Systems, LLC and Peraton Inc. Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services 541512 Computer Systems Design Services	$42,729,499	1.0%	Rank history: #4 in FY2022, #4 in FY2023, #28 in FY2024 and not on the FY2025 list; up 28 since FY2020.
20	Jacobs Engineering Group Inc. 2 awardees, including Amentum Technology, Inc. Top NAICS codes 541330 Engineering Services	$41,047,779	0.9%	Rank history: #14 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
21	Lumen Technologies Government Solutions, Inc. 3 awardees Top NAICS codes 517311 Wired Telecommunications Carriers	$40,092,100	0.9%	Rank history: not on the FY2022–FY2023 lists, #48 in FY2024 and #4 in FY2025; up 40 since FY2020.
22	World Wide Technology Holding Co. Inc. Through World Wide Technology LLC Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$39,119,206	0.9%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
23	Koniag, Inc. 4 awardees, including Tuknik Government Services LLC, Koniag Information Security Services LLC and Koniag Technology Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$37,478,217	0.9%	Rank history: #16 in FY2022, #16 in FY2023, #62 in FY2024 and not on the FY2025 list; up 13 since FY2020.
24	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services	$36,952,975	0.8%	Rank history: #10 in FY2022, #14 in FY2023, #7 in FY2024 and #6 in FY2025; down 7 since FY2020.
25	Sirius Computer Solutions, LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$36,432,844	0.8%	Rank history: #56 in FY2022, #45 in FY2023, #93 in FY2024 and not on the FY2025 list; up 24 since FY2020.
26	Arrow Electronics, Inc. 2 awardees, including EC America, Inc. and Immixtechnology Inc. Top NAICS codes 443120 Computer and Software Stores 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$34,860,240	0.8%	Rank history: not on the FY2022–FY2023 lists, #78 in FY2024 and #81 in FY2025; up 2 since FY2020.
27	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$34,409,762	0.8%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
28	Global Telecom & Technology Inc. 3 awardees, including GTT Americas, LLC and GTT Global Telecom Government Services, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers 517911 Telecommunications Resellers	$34,257,905	0.8%	Rank history: #32 in FY2022, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; up 12 since FY2020.
29	DLT Solutions LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$33,662,485	0.8%	Rank history: not on the FY2022–FY2025 lists; up 60 since FY2020.
30	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$32,852,651	0.8%	Rank history: #52 in FY2022, not on the FY2023 list, #58 in FY2024 and #78 in FY2025; up 94 since FY2020.
31	Amar Health IT, LLC Top NAICS codes 541512 Computer Systems Design Services	$32,832,968	0.8%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
32	The Johns Hopkins University Through The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541512 Computer Systems Design Services	$32,340,458	0.7%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; up 37 since FY2020.
33	Mantech International Corporation 3 awardees, including Tapestry Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$31,668,319	0.7%	Rank history: #27 in FY2022, #26 in FY2023, #71 in FY2024 and not on the FY2025 list; up 163 since FY2020.
34	Science Applications International Corporation 3 awardees Top NAICS codes 541512 Computer Systems Design Services 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing 541511 Custom Computer Programming Services	$31,143,652	0.7%	Rank history: #15 in FY2022, #12 in FY2023, #25 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
35	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 541713 Research and Development in Nanotechnology	$30,100,000	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$29,307,252	0.7%	Rank history: #18 in FY2022, #20 in FY2023, #14 in FY2024 and #24 in FY2025; up 26 since FY2020.
37	Oracle Corporation Through Oracle America, Inc. Top NAICS codes 541519 Other Computer Related Services	$28,696,667	0.7%	Rank history: #21 in FY2022, #30 in FY2023, #39 in FY2024 and not on the FY2025 list; down 15 since FY2020.
38	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$27,505,388	0.6%	Rank history: #28 in FY2022, #19 in FY2023, #23 in FY2024 and not on the FY2025 list; up 6 since FY2020.
39	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334111 Electronic Computer Manufacturing	$27,264,963	0.6%	Rank history: #68 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2020.
40	RTX Corporation 5 awardees, including Raytheon Company and Everfox LLC Top NAICS codes 811213 Communication Equipment Repair and Maintenance 611420 Computer Training 541330 Engineering Services	$26,767,356	0.6%	Rank history: #76 in FY2022, #27 in FY2023, #30 in FY2024 and #43 in FY2025; down 5 since FY2020.
41	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 443120 Computer and Software Stores	$26,092,076	0.6%	Rank history: #39 in FY2022, #21 in FY2023, #18 in FY2024 and #16 in FY2025; up 17 since FY2020.
42	At&T Inc. 12 awardees, including Att Mobility LLC, At&T Technical Services Company, Inc. and At&T Enterprises, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite)	$24,759,937	0.6%	Rank history: #26 in FY2022, #17 in FY2023, #59 in FY2024 and #36 in FY2025; down 23 since FY2020.
43	Nova-Dine LLC 3 awardees, including DDC It Services LLC and Dine' Source, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$24,419,654	0.6%	Rank history: #44 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
44	NCR Corporation Through NCR Government Systems LLC Top NAICS codes 511210 Software Publishers	$23,775,128	0.5%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
45	Unisys Corporation Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$23,525,898	0.5%	Rank history: not on the FY2022–FY2025 lists; down 34 since FY2020.
46	Validatek-Citi, LLC Top NAICS codes 541512 Computer Systems Design Services	$23,290,370	0.5%	Rank history: #29 in FY2022, #29 in FY2023, #34 in FY2024 and #27 in FY2025; up 26 since FY2020.
47	T-Mobile US Inc. 3 awardees, including T-Mobile Secure Federal Operations LLC, T-Mobile Usa, Inc. and Sprint Communications Co LP Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517919 All Other Telecommunications	$22,971,040	0.5%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; up 115 since FY2020.
48	Arctic Slope Regional Corporation 3 awardees, including Asrc Communications, Ltd. and Asrc Federal Data Network Technologies, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$21,260,905	0.5%	Rank history: #31 in FY2022, #25 in FY2023, #49 in FY2024 and #38 in FY2025; up 220 since FY2020.
49	Expression Networks LLC Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services	$20,664,001	0.5%	Rank history: #57 in FY2022, #39 in FY2023, #61 in FY2024 and #50 in FY2025; up 3 since FY2020.
50	Tetra Tech, Inc. Through Bluewater Federal Solutions, Inc. Top NAICS codes 541512 Computer Systems Design Services	$20,465,780	0.5%	Rank history: #54 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
51	Thundercat Technology, LLC Top NAICS codes 541519 Other Computer Related Services	$20,109,418	0.5%	Rank history: #23 in FY2022, #23 in FY2023, #17 in FY2024 and #17 in FY2025; down 6 since FY2020.
52	Qbase, LLC Top NAICS codes 541519 Other Computer Related Services	$19,698,843	0.5%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 92 since FY2020.
53	Trace Systems Holdings Inc. Through Trace Systems, Inc. Top NAICS codes 541512 Computer Systems Design Services	$18,691,990	0.4%	Rank history: #22 in FY2022, #24 in FY2023, #69 in FY2024 and not on the FY2025 list; down 10 since FY2020.
54	Vion Corporation Top NAICS codes 541519 Other Computer Related Services	$18,163,347	0.4%	Rank history: #67 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
55	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$18,037,939	0.4%	Rank history: #49 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2020.
56	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$16,736,801	0.4%	Rank history: #83 in FY2022, #72 in FY2023, #27 in FY2024 and #46 in FY2025; up 10 since FY2020.
57	CA Inc. Top NAICS codes 511210 Software Publishers	$16,137,949	0.4%	Rank history: #60 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
58	DH Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$15,388,248	0.4%	Rank history: #95 in FY2022, #62 in FY2023, #76 in FY2024 and #61 in FY2025; up 44 since FY2020.
59	Creative It Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services	$14,886,028	0.3%	Rank history: #63 in FY2022, #65 in FY2023, #68 in FY2024 and #85 in FY2025; down 6 since FY2020.
60	Ipkeys Technologies LLC Top NAICS codes 541519 Other Computer Related Services	$14,708,266	0.3%	Rank history: #55 in FY2022, #44 in FY2023, #45 in FY2024 and #67 in FY2025; up 7 since FY2020.
61	Computer World Services, Corp. Top NAICS codes 541519 Other Computer Related Services	$14,556,242	0.3%	Rank history: #87 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
62	Foxhole Technology LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$14,409,818	0.3%	Rank history: #74 in FY2022, #56 in FY2023, #80 in FY2024 and #76 in FY2025; down 30 since FY2020.
63	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top NAICS codes 541519 Other Computer Related Services	$14,341,399	0.3%	Rank history: #59 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
64	Ritenet Corp. Top NAICS codes 517410 Satellite Telecommunications 517911 Telecommunications Resellers	$13,975,504	0.3%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
65	Verizon Business Network Services LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$13,731,149	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Amentum Services, Inc. Top NAICS codes 541519 Other Computer Related Services 517110 Wired Telecommunications Carriers 541330 Engineering Services	$13,237,672	0.3%	Rank history: #69 in FY2022, #69 in FY2023, #96 in FY2024 and not on the FY2025 list; up 46 since FY2020.
67	Decisionone Corporation Top NAICS codes 541519 Other Computer Related Services	$12,595,324	0.3%	Rank history: not on the FY2022–FY2025 lists; down 38 since FY2020.
68	Compqsoft, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$11,213,423	0.3%	Rank history: #45 in FY2022, #37 in FY2023, #36 in FY2024 and #37 in FY2025; up 25 since FY2020.
69	Ryan Consulting Group Inc. Top NAICS codes 541512 Computer Systems Design Services	$10,294,667	0.2%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
70	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services	$10,227,581	0.2%	Rank history: #77 in FY2022, #57 in FY2023, #86 in FY2024 and not on the FY2025 list; up 72 since FY2020.
71	Competitive Range Solutions LLC Top NAICS codes 541330 Engineering Services 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$9,634,393	0.2%	Rank history: #17 in FY2022, #15 in FY2023, #22 in FY2024 and #23 in FY2025; unchanged since FY2020.
72	3Vesta, LLC Top NAICS codes 541512 Computer Systems Design Services	$9,579,508	0.2%	Rank history: #85 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
73	CMA Technology Inc. Top NAICS codes 541519 Other Computer Related Services	$9,060,561	0.2%	Rank history: #92 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
74	Indrasoft Inc. Top NAICS codes 541519 Other Computer Related Services	$9,014,314	0.2%	Rank history: not on the FY2022–FY2024 lists and #65 in FY2025; up 87 since FY2020.
75	Lightgrid LLC Top NAICS codes 541512 Computer Systems Design Services	$9,005,026	0.2%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
76	Four LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$8,982,444	0.2%	Rank history: #36 in FY2022, #28 in FY2023, #20 in FY2024 and #73 in FY2025; down 52 since FY2020.
77	Appian Corporation Top NAICS codes 541512 Computer Systems Design Services	$8,974,948	0.2%	Rank history: #79 in FY2022, #97 in FY2023, #90 in FY2024 and #87 in FY2025; up 4 since FY2020.
78	Itellect LLC Top NAICS codes 541512 Computer Systems Design Services 541618 Other Management Consulting Services	$8,950,205	0.2%	Rank history: #88 in FY2022, #83 in FY2023, #87 in FY2024 and not on the FY2025 list; up 8 since FY2020.
79	Intific Inc Through Cubic Digital Intelligence Inc. Top NAICS codes 541512 Computer Systems Design Services	$8,880,758	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
80	Cavalier Telephone L.L.C. Top NAICS codes 517311 Wired Telecommunications Carriers 517110 Wired Telecommunications Carriers 517911 Telecommunications Resellers	$8,669,876	0.2%	Rank history: not on the FY2022–FY2025 lists; up 61 since FY2020.
81	VET Advisor LLC Through Three Wire Systems, LLC Top NAICS codes 541519 Other Computer Related Services	$8,442,329	0.2%	Rank history: #78 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 106 since FY2020.
82	Red River Technology LLC Top NAICS codes 541519 Other Computer Related Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334111 Electronic Computer Manufacturing	$8,362,199	0.2%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 56 since FY2020.
83	Integrated Computer Solutions, Inc. Top NAICS codes 541512 Computer Systems Design Services	$8,249,427	0.2%	Rank history: #97 in FY2022, #68 in FY2023, #35 in FY2024 and #30 in FY2025; up 2 since FY2020.
84	Virginia Energy and Lighting, LLC Top NAICS codes 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing 335311 Power, Distribution, and Specialty Transformer Manufacturing	$8,206,256	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$8,184,258	0.2%	Rank history: not on the FY2022–FY2023 lists, #65 in FY2024 and #54 in FY2025; up 87 since FY2020.
86	Sigma Defense Systems LLC Top NAICS codes 334290 Other Communications Equipment Manufacturing	$8,166,705	0.2%	Rank history: #65 in FY2022, #36 in FY2023, #32 in FY2024 and #44 in FY2025; up 156 since FY2020.
87	Akira Technologies Inc. Top NAICS codes 541511 Custom Computer Programming Services	$8,157,468	0.2%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
88	Francisco Partners Management Through Everfox LLC Top NAICS codes 611420 Computer Training	$8,026,056	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
89	Anacapa Micro Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$7,890,811	0.2%	Rank history: not on the FY2022–FY2025 lists; up 308 since FY2020.
90	Integrated Finance and Accounting Solutions, Llc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$7,852,399	0.2%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
91	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$7,622,126	0.2%	Rank history: #19 in FY2022, #70 in FY2023, not on the FY2024 list and #35 in FY2025; down 36 since FY2020.
92	Indigenous Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$7,550,226	0.2%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
93	Applied Research Institute Inc.	$7,158,146	0.2%	Rank history: #20 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
94	Intellibridge, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$7,097,489	0.2%	Rank history: not on the FY2022–FY2025 lists; down 68 since FY2020.
95	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$7,056,936	0.2%	Rank history: not on the FY2022–FY2025 lists; up 322 since FY2020.
96	Beyon B.s.c Top NAICS codes 517311 Wired Telecommunications Carriers	$6,956,470	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Enterprise Resource Planning International, LLC Top NAICS codes 541512 Computer Systems Design Services	$6,937,463	0.2%	Rank history: #81 in FY2022, #78 in FY2023, #56 in FY2024 and #33 in FY2025; up 187 since FY2020.
98	22Nd Century Technologies, Inc. Top NAICS codes 541512 Computer Systems Design Services	$6,905,716	0.2%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
99	Data Systems Analysts Inc. Top NAICS codes 541512 Computer Systems Design Services	$6,702,973	0.2%	Rank history: #72 in FY2022, #95 in FY2023, not on the FY2024 list and #88 in FY2025; up 22 since FY2020.
100	Sienna Systems Corp Top NAICS codes 541511 Custom Computer Programming Services	$6,566,018	0.2%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.

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 $4.37 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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