Top 100 Defense Threat Reduction Agency Contractors, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CACI International Inc. 3 awardees, including Caci Nss, LLC and Charon Technologies LLC Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$165,959,551	11.0%	Rank history: #1 in FY2021, #3 in FY2023, #4 in FY2024 and #5 in FY2025; unchanged since FY2021.
2	Applied Research Associates, Inc. 2 awardees, including Neya Systems LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541990 All Other Professional, Scientific, and Technical Services 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$146,216,939	9.7%	Rank history: #3 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2021.
3	Honeywell International Inc. Through National Technology & Engineering Solutions of Sandia, LLC Top NAICS codes 561210 Facilities Support Services	$145,060,448	9.7%	Rank history: not on the FY2021 list, #2 in FY2023, #2 in FY2024 and not on the FY2025 list; new.
4	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services	$88,187,489	5.9%	Rank history: #2 in FY2021, #5 in FY2023, #3 in FY2024 and #3 in FY2025; down 2 since FY2021.
5	Noblis, Inc. Top NAICS codes 541330 Engineering Services	$66,251,860	4.4%	Rank history: #20 in FY2021, #13 in FY2023, #7 in FY2024 and #6 in FY2025; up 15 since FY2021.
6	Amentum Services, Inc. Through URS Federal Services International, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$61,370,201	4.1%	Rank history: #8 in FY2021, #4 in FY2023, #13 in FY2024 and not on the FY2025 list; up 2 since FY2021.
7	Teksynap Corporation Top NAICS codes 541513 Computer Facilities Management Services 541519 Other Computer Related Services	$61,156,951	4.1%	Rank history: #6 in FY2021, #7 in FY2023, #8 in FY2024 and #13 in FY2025; down 1 since FY2021.
8	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$60,651,281	4.0%	Rank history: #4 in FY2021, #6 in FY2023, #6 in FY2024 and #2 in FY2025; down 4 since FY2021.
9	Triad National Security, LLC Top NAICS codes 561210 Facilities Support Services	$50,563,089	3.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
10	Systems Planning and Analysis, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$33,905,465	2.3%	Rank history: #21 in FY2021, #11 in FY2023, #14 in FY2024 and #9 in FY2025; up 11 since FY2021.
11	Nakupuna Solutions, LLC Top NAICS codes 541330 Engineering Services	$28,173,043	1.9%	Rank history: not on the FY2021 list, #14 in FY2023, #11 in FY2024 and #36 in FY2025; new.
12	Arservices, Limited Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services 493110 General Warehousing and Storage	$27,878,250	1.9%	Rank history: #17 in FY2021, #16 in FY2023, #16 in FY2024 and #12 in FY2025; up 5 since FY2021.
13	PAE Government Services Inc. 2 awardees, including PAE National Security Solutions LLC and Centra Technology, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$25,245,569	1.7%	Rank history: #10 in FY2021, #33 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
14	L3Harris Technologies, Inc. 3 awardees, including Fisica Applied Technologies, Inc. and L-3 Applied Technologies, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$23,812,838	1.6%	Rank history: #9 in FY2021, #21 in FY2023, #22 in FY2024 and #17 in FY2025; down 5 since FY2021.
15	Southwest Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$21,241,531	1.4%	Rank history: #12 in FY2021, #17 in FY2023, #15 in FY2024 and #16 in FY2025; down 3 since FY2021.
16	Parsons Corporation 3 awardees, including Parsons Government Services International Inc., Blackhorse, A Parsons LLC and Ogsystems, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$21,034,582	1.4%	Rank history: #25 in FY2021, #9 in FY2023, #9 in FY2024 and #11 in FY2025; up 9 since FY2021.
17	Culmen International, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$17,692,833	1.2%	Rank history: #22 in FY2021, #10 in FY2023, #21 in FY2024 and #20 in FY2025; up 5 since FY2021.
18	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics One Source LLC Top NAICS codes 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services 334111 Electronic Computer Manufacturing	$16,798,457	1.1%	Rank history: #15 in FY2021, #19 in FY2023, #12 in FY2024 and #7 in FY2025; down 3 since FY2021.
19	Nova Global Supply and Services LLC Through Valiant Global Defense Services Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$14,457,064	1.0%	Rank history: #13 in FY2021, #18 in FY2023, #49 in FY2024 and not on the FY2025 list; down 6 since FY2021.
20	Black & Veatch Special Projects Corp. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$13,613,403	0.9%	Rank history: #5 in FY2021, #12 in FY2023, #24 in FY2024 and #30 in FY2025; down 15 since FY2021.
21	Savantage Financial Services, Inc. Top NAICS codes 541519 Other Computer Related Services	$12,730,571	0.8%	Rank history: #18 in FY2021, #22 in FY2023, #20 in FY2024 and #19 in FY2025; down 3 since FY2021.
22	Cherokee Nation Through Cherokee Nation Strategic Programs, L.L.C. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$12,220,506	0.8%	Rank history: #35 in FY2021 and not on the FY2023–FY2025 lists; up 13 since FY2021.
23	HP Enterprise Services LLC 4 awardees, including Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$11,787,875	0.8%	Rank history: #28 in FY2021, #41 in FY2023, #92 in FY2024 and #92 in FY2025; up 5 since FY2021.
24	Science Applications International Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$8,429,092	0.6%	Rank history: #7 in FY2021, #27 in FY2023, #28 in FY2024 and #18 in FY2025; down 17 since FY2021.
25	Kapili Services, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541512 Computer Systems Design Services	$8,231,898	0.5%	Rank history: not on the FY2021 list, #25 in FY2023, #39 in FY2024 and #34 in FY2025; up 149 since FY2021.
26	RTX Corporation 2 awardees, including Raytheon Company and Everfox LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 511210 Software Publishers 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$8,014,411	0.5%	Rank history: #23 in FY2021, #37 in FY2023, #18 in FY2024 and #45 in FY2025; down 3 since FY2021.
27	K2 Group, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$7,086,728	0.5%	Rank history: #32 in FY2021, not on the FY2023 list, #31 in FY2024 and #29 in FY2025; up 5 since FY2021.
28	Akima Data Management LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$7,045,689	0.5%	Rank history: #61 in FY2021, #28 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2021.
29	Premier Technology, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$6,501,814	0.4%	Rank history: #19 in FY2021, #24 in FY2023, #23 in FY2024 and #26 in FY2025; down 10 since FY2021.
30	JFL Consulting, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$6,087,768	0.4%	Rank history: #51 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2021.
31	National Strategic Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,355,396	0.4%	Rank history: #33 in FY2021, #26 in FY2023, #50 in FY2024 and #61 in FY2025; up 2 since FY2021.
32	International Aids Vaccine Initiative Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,300,000	0.4%	Rank history: #16 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2021.
33	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers 334111 Electronic Computer Manufacturing	$5,142,719	0.3%	Rank history: #39 in FY2021, #36 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
34	University of Alaska System Through University of Alaska Fairbanks Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 611310 Colleges, Universities, and Professional Schools	$4,756,051	0.3%	Rank history: #47 in FY2021, #30 in FY2023, #38 in FY2024 and not on the FY2025 list; up 13 since FY2021.
35	The Charles Stark Draper Laboratory, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$4,713,340	0.3%	Rank history: #41 in FY2021, #52 in FY2023, #81 in FY2024 and not on the FY2025 list; up 6 since FY2021.
36	Goldbelt, Incorporated Through Goldbelt Security LLC Top NAICS codes 334516 Analytical Laboratory Instrument Manufacturing	$4,698,814	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 116 since FY2021.
37	Chimera Enterprises International Incorporated Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$4,490,597	0.3%	Rank history: #44 in FY2021, #45 in FY2023, #51 in FY2024 and not on the FY2025 list; up 7 since FY2021.
38	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services	$4,221,006	0.3%	Rank history: #37 in FY2021, not on the FY2023 list, #75 in FY2024 and #55 in FY2025; down 1 since FY2021.
39	Northern Arizona University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$4,066,998	0.3%	Rank history: not on the FY2021 list, #67 in FY2023, #78 in FY2024 and #62 in FY2025; up 119 since FY2021.
40	Mantech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,861,444	0.3%	Rank history: #48 in FY2021, #64 in FY2023, #96 in FY2024 and not on the FY2025 list; up 8 since FY2021.
41	Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 511210 Software Publishers 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,695,350	0.2%	Rank history: #29 in FY2021, not on the FY2023 list, #40 in FY2024 and #37 in FY2025; down 12 since FY2021.
42	Koninklijke Philips N.V. Through Philips North America LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,679,591	0.2%	Rank history: #30 in FY2021, #46 in FY2023, #73 in FY2024 and not on the FY2025 list; down 12 since FY2021.
43	Chenega It Enterprise Services, LLC Top NAICS codes 541613 Marketing Consulting Services 541611 Administrative Management and General Management Consulting Services	$3,650,000	0.2%	Rank history: #52 in FY2021, #58 in FY2023, #37 in FY2024 and not on the FY2025 list; up 9 since FY2021.
44	Broadleaf, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,547,469	0.2%	Rank history: #53 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
45	CDW Corporation Through CDW Government LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$3,474,929	0.2%	Rank history: #43 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
46	D7, LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$3,436,164	0.2%	Rank history: not on the FY2021 list, #55 in FY2023 and not on the FY2024–FY2025 lists; new.
47	Natsionalny Yaderny Tsentr Respubliki Kazakhstan, GP Top NAICS codes 541330 Engineering Services	$3,263,061	0.2%	Rank history: #58 in FY2021, #43 in FY2023, #29 in FY2024 and not on the FY2025 list; up 11 since FY2021.
48	Scitech Services Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$3,058,620	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
49	Environmental Systems Research Institute, Inc. Top NAICS codes 511210 Software Publishers	$2,980,262	0.2%	Rank history: #55 in FY2021, #60 in FY2023, #58 in FY2024 and #44 in FY2025; up 6 since FY2021.
50	World Wide Technology Holding Co. Inc. Through Asynchrony Solutions, LLC Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$2,800,435	0.2%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; up 7 since FY2021.
51	C3.Ai, Inc.	$2,535,000	0.2%	Rank history: #64 in FY2021, #80 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
52	Amyx Inc. Top NAICS codes 541330 Engineering Services	$2,508,172	0.2%	Rank history: #11 in FY2021 and not on the FY2023–FY2025 lists; down 41 since FY2021.
53	The Administrators of Tulane Educational Fund Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,475,072	0.2%	Rank history: not on the FY2021 list, #83 in FY2023, #95 in FY2024 and not on the FY2025 list; up 123 since FY2021.
54	Advanced Material Handling LLC Top NAICS codes 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$2,418,647	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
55	Novetta Solutions, LLC Through Accenture Federal Services LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,370,461	0.2%	Rank history: #66 in FY2021, #54 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2021.
56	Kbr, Inc. Through KBR Wyle Services, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$2,304,498	0.2%	Rank history: #34 in FY2021, #76 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
57	Teledyne Technologies Incorporated Through Teledyne Flir Defense, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,221,539	0.1%	Rank history: #96 in FY2021, not on the FY2023 list, #47 in FY2024 and #68 in FY2025; up 39 since FY2021.
58	Center for Strategic & International Studies Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$2,170,446	0.1%	Rank history: not on the FY2021 list, #98 in FY2023 and not on the FY2024–FY2025 lists; up 79 since FY2021.
59	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$2,155,995	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
60	Katmai Management Services LLC Top NAICS codes 561210 Facilities Support Services	$2,149,572	0.1%	Rank history: not on the FY2021 list, #65 in FY2023, #70 in FY2024 and #60 in FY2025; new.
61	The Pennsylvania State University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,137,245	0.1%	Rank history: not on the FY2021 list, #32 in FY2023, #19 in FY2024 and #21 in FY2025; new.
62	Fifth Gait Technologies, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,100,000	0.1%	Rank history: not on the FY2021 list, #70 in FY2023, not on the FY2024 list and #80 in FY2025; up 97 since FY2021.
63	Indesign LLC Top NAICS codes 541330 Engineering Services	$2,033,754	0.1%	Rank history: #59 in FY2021, #61 in FY2023, #74 in FY2024 and #67 in FY2025; down 4 since FY2021.
64	Phase LLC Top NAICS codes 541519 Other Computer Related Services	$2,032,818	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
65	Sierra Nevada Company, LLC Top NAICS codes 511210 Software Publishers 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,006,034	0.1%	Rank history: #84 in FY2021 and not on the FY2023–FY2025 lists; up 19 since FY2021.
66	Jacobs Engineering Group Inc. 2 awardees, including Ch2M Hill, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,858,930	0.1%	Rank history: #14 in FY2021, #23 in FY2023 and not on the FY2024–FY2025 lists; down 52 since FY2021.
67	Avantus Federal LLC Through Occam's Razor Technologies LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,818,192	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
68	Kyrus Tech, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,762,242	0.1%	Rank history: #67 in FY2021, #57 in FY2023, #33 in FY2024 and #27 in FY2025; down 1 since FY2021.
69	Sealing Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$1,713,774	0.1%	Rank history: #45 in FY2021 and not on the FY2023–FY2025 lists; down 24 since FY2021.
70	Stemboard LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,661,845	0.1%	Rank history: not on the FY2021 list, #68 in FY2023 and not on the FY2024–FY2025 lists; new.
71	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,634,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 44 since FY2021.
72	Red Wire Technologies LLC	$1,612,804	0.1%	Rank history: #82 in FY2021, not on the FY2023 list, #82 in FY2024 and not on the FY2025 list; up 10 since FY2021.
73	Aurora Systems Consulting Inc. Top NAICS codes 541519 Other Computer Related Services	$1,596,503	0.1%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; up 10 since FY2021.
74	ICR Inc Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,594,065	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #68 in FY2024 and #70 in FY2025; new.
75	Integration Technologies Group, Inc. Top NAICS codes 334112 Computer Storage Device Manufacturing 541519 Other Computer Related Services	$1,504,470	0.1%	Rank history: #78 in FY2021, not on the FY2023 list, #93 in FY2024 and #100 in FY2025; up 3 since FY2021.
76	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$1,452,729	0.1%	Rank history: #88 in FY2021, not on the FY2023 list, #94 in FY2024 and #33 in FY2025; up 12 since FY2021.
77	Dager Technology , LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,444,925	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 50 since FY2021.
78	Mountain Horse LLC Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$1,435,800	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Cantada, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,400,602	0.1%	Rank history: #80 in FY2021 and not on the FY2023–FY2025 lists; up 1 since FY2021.
80	Document Storage Systems, Inc. Through SBG Technology Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,371,900	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
81	Centeio Associates Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,323,935	0.1%	Rank history: #90 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
82	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$1,320,224	0.1%	Rank history: #26 in FY2021, #69 in FY2023 and not on the FY2024–FY2025 lists; down 56 since FY2021.
83	Nana Regional Corporation Inc 3 awardees, including Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$1,284,307	0.1%	Rank history: #63 in FY2021, #73 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2021.
84	Appddictionstudio Limited Liability Company Top NAICS codes 541511 Custom Computer Programming Services	$1,232,157	0.1%	Rank history: not on the FY2021 list, #77 in FY2023 and not on the FY2024–FY2025 lists; new.
85	Able Force, Inc. Top NAICS codes 561110 Office Administrative Services	$1,210,761	0.1%	Rank history: #95 in FY2021 and not on the FY2023–FY2025 lists; up 10 since FY2021.
86	The Boeing Company Through Boeing Intelligence & Analytics, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,195,713	0.1%	Rank history: #91 in FY2021 and not on the FY2023–FY2025 lists; up 5 since FY2021.
87	Nevada State Veterans Home Through Board of Regents of Nevada System of Higher Education Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$1,156,583	0.1%	Rank history: #62 in FY2021, #96 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2021.
88	Po`okela Solutions, LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$1,155,561	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 35 since FY2021.
89	Sonalysts Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,149,269	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 114 since FY2021.
90	Nu-Trek, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,147,658	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
91	Exmat Research Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,133,992	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Aeris LLC Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$1,128,871	0.1%	Rank history: not on the FY2021 list, #87 in FY2023, #77 in FY2024 and #42 in FY2025; up 30 since FY2021.
93	Arzeda Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,118,433	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
94	Parabon Nanolabs, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,099,957	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #59 in FY2025; up 113 since FY2021.
95	Welkin Sciences, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,099,801	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 111 since FY2021.
96	Clear Scientific, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,096,531	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 36 since FY2021.
97	Knowledge Based Systems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,095,878	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
98	Integrated Solutions for Systems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,093,793	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Northwest Research Associates, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,093,735	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 112 since FY2021.
100	University of Hawaii Systems Through University of Hawaii Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,061,830	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 3 since FY2021.

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 $1.5 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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