Top 100 Defense Counterintelligence and Security Agency Contractors, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	HP Enterprise Services LLC 2 awardees, including Peraton Risk Decision Inc. Top NAICS codes 561611 Investigation and Personal Background Check Services	$202,129,430	16.7%	Rank history: #35 in FY2021, #2 in FY2022, #4 in FY2024 and not on the FY2025 list; up 1 since FY2022.
2	CACI International Inc. 2 awardees, including Caci, Inc. - Federal and Caci Premier Technology, LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$183,673,392	15.1%	Rank history: #1 in FY2021, #3 in FY2022, #1 in FY2024 and #2 in FY2025; up 1 since FY2022.
3	Science Applications International Corporation Top NAICS codes 541512 Computer Systems Design Services	$102,122,534	8.4%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2024 and #33 in FY2025; new.
4	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 513210 Software Publishers	$49,209,036	4.1%	Rank history: #10 in FY2021, #7 in FY2022, #9 in FY2024 and #5 in FY2025; up 3 since FY2022.
5	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$39,127,530	3.2%	Rank history: #22 in FY2021, #39 in FY2022 and not on the FY2024–FY2025 lists; up 34 since FY2022.
6	Kpmg L.L.P. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$31,349,775	2.6%	Rank history: #6 in FY2021, #5 in FY2022, #8 in FY2024 and #13 in FY2025; down 1 since FY2022.
7	Echelon Services, LLC Top NAICS codes 541513 Computer Facilities Management Services 561990 All Other Support Services	$27,587,157	2.3%	Rank history: not on the FY2021 list, #6 in FY2022, #14 in FY2024 and #26 in FY2025; down 1 since FY2022.
8	Arctic Slope Regional Corporation Through Asrc Federal Professional Services, LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$26,333,500	2.2%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2024 and #4 in FY2025; new.
9	Asrc Federal Professional Services, LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$26,201,909	2.2%	Rank history: #5 in FY2021, #8 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
10	Verato, Inc. Top NAICS codes 541219 Other Accounting Services 561450 Credit Bureaus	$22,836,709	1.9%	Rank history: #8 in FY2021, #11 in FY2022, #18 in FY2024 and #70 in FY2025; up 1 since FY2022.
11	Sierra Nevada Company, LLC Top NAICS codes 511210 Software Publishers	$21,808,404	1.8%	Rank history: #12 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
12	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services	$18,216,427	1.5%	Rank history: #4 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
13	Alaska Native Government Services LLC Through Copper River Cyber Solutions, LLC Top NAICS codes 541618 Other Management Consulting Services 541519 Other Computer Related Services	$17,919,507	1.5%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and not on the FY2025 list; new.
14	The Prospective Group, LLC Top NAICS codes 541330 Engineering Services	$16,740,243	1.4%	Rank history: not on the FY2021 list, #37 in FY2022, #10 in FY2024 and #21 in FY2025; up 23 since FY2022.
15	Cherokee Insights LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541690 Other Scientific and Technical Consulting Services	$15,670,702	1.3%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and #10 in FY2025; new.
16	Metis Celestar JV LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$14,979,609	1.2%	Rank history: #14 in FY2021, #12 in FY2022, #21 in FY2024 and #63 in FY2025; down 4 since FY2022.
17	Nova-Dine LLC Through DDC It Services LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$13,919,789	1.1%	Rank history: #29 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
18	Iworks Corp Top NAICS codes 561611 Investigation and Personal Background Check Services	$12,467,558	1.0%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2024 and #8 in FY2025; new.
19	Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services	$11,247,649	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	Dynanet Corporation Top NAICS codes 541511 Custom Computer Programming Services	$10,728,847	0.9%	Rank history: #13 in FY2021, #16 in FY2022, #35 in FY2024 and #38 in FY2025; down 4 since FY2022.
21	Advanced Technology Systems Inc. 2 awardees, including Salient Federal-Sgis Inc. and Salient Crgt, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$10,527,637	0.9%	Rank history: #18 in FY2021, not on the FY2022 list, #64 in FY2024 and not on the FY2025 list; returned.
22	Relx Inc Top NAICS codes 511120 Periodical Publishers	$9,906,400	0.8%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; up 36 since FY2022.
23	Global Connections To Employment, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$9,490,122	0.8%	Rank history: #15 in FY2021, #14 in FY2022, #11 in FY2024 and #30 in FY2025; down 9 since FY2022.
24	Team Carney, Inc. Top NAICS codes 611430 Professional and Management Development Training	$8,653,250	0.7%	Rank history: #27 in FY2021, #29 in FY2022, #17 in FY2024 and #15 in FY2025; up 5 since FY2022.
25	Agile Decision Sciences, LLC Top NAICS codes 541513 Computer Facilities Management Services	$7,778,525	0.6%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and not on the FY2025 list; new.
26	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$6,662,872	0.5%	Rank history: not on the FY2021 list, #21 in FY2022, #31 in FY2024 and #25 in FY2025; down 5 since FY2022.
27	Intelligenesis LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$5,976,313	0.5%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2024 and not on the FY2025 list; new.
28	Addon Services LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$5,471,639	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
29	Insight Public Sector Inc. Through Pcmg, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$5,457,811	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	A3 Consulting LLC Top NAICS codes 541511 Custom Computer Programming Services	$5,454,446	0.4%	Rank history: #28 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
31	International Business Machines Corporation Top NAICS codes 541511 Custom Computer Programming Services	$5,374,032	0.4%	Rank history: #25 in FY2021, #23 in FY2022, #38 in FY2024 and #24 in FY2025; down 8 since FY2022.
32	National Student Clearinghouse Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$5,300,000	0.4%	Rank history: #63 in FY2021, #27 in FY2022, #37 in FY2024 and #32 in FY2025; down 5 since FY2022.
33	Minburn Technology Group, LLC Top NAICS codes 511210 Software Publishers	$5,273,583	0.4%	Rank history: #23 in FY2021, #24 in FY2022, #23 in FY2024 and #14 in FY2025; down 9 since FY2022.
34	Consolidated Nuclear Security, LLC Top NAICS codes 561210 Facilities Support Services	$5,158,785	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #61 in FY2025; new.
35	SJ Tech LLC Top NAICS codes 541512 Computer Systems Design Services	$4,997,348	0.4%	Rank history: #26 in FY2021, #26 in FY2022, #54 in FY2024 and not on the FY2025 list; down 9 since FY2022.
36	Nana Regional Corporation Inc Through Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$4,123,742	0.3%	Rank history: #7 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
37	Frontier Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,001,758	0.3%	Rank history: #24 in FY2021, #42 in FY2022, #34 in FY2024 and #19 in FY2025; up 5 since FY2022.
38	Enlightened, Inc. Top NAICS codes 541512 Computer Systems Design Services	$3,868,478	0.3%	Rank history: #31 in FY2021, #31 in FY2022, #42 in FY2024 and #47 in FY2025; down 7 since FY2022.
39	Cacg, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,818,432	0.3%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2024 and #40 in FY2025; new.
40	Keystone Vocational Services Inc. Top NAICS codes 561499 All Other Business Support Services	$3,670,976	0.3%	Rank history: #33 in FY2021, #38 in FY2022, #47 in FY2024 and #45 in FY2025; down 2 since FY2022.
41	Manta Group LLC Top NAICS codes 541330 Engineering Services	$3,560,511	0.3%	Rank history: #36 in FY2021, #34 in FY2022, #48 in FY2024 and #39 in FY2025; down 7 since FY2022.
42	R3 Government Solutions, LLC Top NAICS codes 541612 Human Resources Consulting Services	$3,176,246	0.3%	Rank history: #47 in FY2021, #36 in FY2022, #50 in FY2024 and #43 in FY2025; down 6 since FY2022.
43	Cloud Lake Technology LLC Top NAICS codes 541512 Computer Systems Design Services	$2,997,472	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	WWC Global LLC Top NAICS codes 541330 Engineering Services	$2,936,554	0.2%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
45	Island Empire Technology Systems LLC Top NAICS codes 611430 Professional and Management Development Training	$2,911,729	0.2%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2024 and #62 in FY2025; new.
46	Rockwood Company LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,866,707	0.2%	Rank history: #42 in FY2021, #30 in FY2022, #67 in FY2024 and #54 in FY2025; down 16 since FY2022.
47	Revolutional, LLC Top NAICS codes 541511 Custom Computer Programming Services	$2,594,563	0.2%	Rank history: #37 in FY2021, #41 in FY2022, #70 in FY2024 and #48 in FY2025; down 6 since FY2022.
48	Trussworks Inc. Top NAICS codes 541512 Computer Systems Design Services	$2,393,856	0.2%	Rank history: not on the FY2021 list, #22 in FY2022, #63 in FY2024 and not on the FY2025 list; down 26 since FY2022.
49	Equifax Inc. Through Equifax Workforce Solutions LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$2,290,814	0.2%	Rank history: #48 in FY2021, #59 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
50	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$2,096,908	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and #51 in FY2025; up 89 since FY2022.
51	Arrowpoint Corporation Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$2,023,687	0.2%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and not on the FY2025 list; new.
52	Goldbelt Nighthawk, LLC Top NAICS codes 541519 Other Computer Related Services	$1,824,661	0.2%	Rank history: #30 in FY2021, #28 in FY2022, #29 in FY2024 and #58 in FY2025; down 24 since FY2022.
53	At&T Inc. 4 awardees, including At&T Mobility National Accounts LLC and At&T Enterprises, LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517111 Wired Telecommunications Carriers 517919 All Other Telecommunications	$1,669,358	0.1%	Rank history: #44 in FY2021, #52 in FY2022, #65 in FY2024 and #72 in FY2025; down 1 since FY2022.
54	University System of Maryland Through University of Maryland, College Park Top NAICS codes 611310 Colleges, Universities, and Professional Schools	$1,606,240	0.1%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
55	Goodwill Commercial Services, Inc. Top NAICS codes 561720 Janitorial Services	$1,549,136	0.1%	Rank history: #45 in FY2021, #54 in FY2022, #100 in FY2024 and #96 in FY2025; down 1 since FY2022.
56	Rivertech LLC Top NAICS codes 561210 Facilities Support Services	$1,543,190	0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #25 in FY2024 and not on the FY2025 list; down 21 since FY2022.
57	Center for Creative Leadership Top NAICS codes 611430 Professional and Management Development Training	$1,534,564	0.1%	Rank history: #61 in FY2021, #82 in FY2022, #60 in FY2024 and #65 in FY2025; up 25 since FY2022.
58	Beat LLC Through Business Enabled Acquisition and Technology, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,517,676	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2024 and #53 in FY2025; new.
59	G2 Global Solutions, LLC Top NAICS codes 541330 Engineering Services	$1,484,900	0.1%	Rank history: #73 in FY2021, #49 in FY2022, #72 in FY2024 and not on the FY2025 list; down 10 since FY2022.
60	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,423,474	0.1%	Rank history: not on the FY2021 list, #47 in FY2022, #57 in FY2024 and #90 in FY2025; down 13 since FY2022.
61	Bloomberg LP Through Bloomberg Finance LP Top NAICS codes 519190 All Other Information Services	$1,361,370	0.1%	Rank history: #66 in FY2021, #60 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
62	Nextstep Technology Inc. Top NAICS codes 541330 Engineering Services	$1,336,004	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and #66 in FY2025; new.
63	Palantir Technologies Inc. Top NAICS codes 511210 Software Publishers	$1,287,668	0.1%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and #16 in FY2025; new.
64	Global Skills Exchange Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,206,709	0.1%	Rank history: #49 in FY2021, #51 in FY2022, #84 in FY2024 and not on the FY2025 list; down 13 since FY2022.
65	PAT V Mack Inc Top NAICS codes 541512 Computer Systems Design Services	$1,060,202	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
66	Dell Federal Systems L.P. Through Dell Marketing L.P. Top NAICS codes 511210 Software Publishers	$1,060,200	0.1%	Rank history: not on the FY2021 list, #67 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
67	BKM Construction LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$871,740	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Rbr-Technologies, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$871,325	0.1%	Rank history: #21 in FY2021, #53 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
69	Mantech Tsg-2 Joint Venture Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$869,357	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2024 and not on the FY2025 list; new.
70	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$850,453	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #76 in FY2025; new.
71	RTX Corporation Through Everfox LLC Top NAICS codes 541519 Other Computer Related Services	$847,957	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #77 in FY2024 and not on the FY2025 list; down 5 since FY2022.
72	Fedresults, Inc. Top NAICS codes 511210 Software Publishers 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$838,191	0.1%	Rank history: #84 in FY2021, #75 in FY2022, #79 in FY2024 and not on the FY2025 list; up 3 since FY2022.
73	Four LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$808,903	0.1%	Rank history: #60 in FY2021, #70 in FY2022, #78 in FY2024 and #98 in FY2025; down 3 since FY2022.
74	NCS Pearson Inc. Top NAICS codes 611710 Educational Support Services	$790,191	0.1%	Rank history: #80 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
75	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$718,876	0.1%	Rank history: #71 in FY2021, #71 in FY2022, #95 in FY2024 and not on the FY2025 list; down 4 since FY2022.
76	Integrity Management Consulting, Inc. 2 awardees, including MHM Innovations, Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$698,977	0.1%	Rank history: #96 in FY2021, #95 in FY2022, #82 in FY2024 and not on the FY2025 list; up 19 since FY2022.
77	Purdy Group LLC Top NAICS codes 561210 Facilities Support Services	$679,162	0.1%	Rank history: #54 in FY2021, #99 in FY2022, #80 in FY2024 and #85 in FY2025; up 22 since FY2022.
78	Idemia Identity & Security USA LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$588,323	<0.1%	Rank history: #82 in FY2021, #86 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
79	Talu LLC Top NAICS codes 337127 Institutional Furniture Manufacturing	$587,657	<0.1%	Rank history: not on the FY2021 list, #45 in FY2022, #28 in FY2024 and not on the FY2025 list; down 34 since FY2022.
80	REI Systems Inc. Top NAICS codes 541512 Computer Systems Design Services	$581,672	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Thomas & Reed LLC Top NAICS codes 621330 Offices of Mental Health Practitioners (except Physicians)	$549,268	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	DH Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$535,911	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$511,105	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2024 and #68 in FY2025; up 45 since FY2022.
84	Pherson Associates, LLC Top NAICS codes 611430 Professional and Management Development Training	$506,135	<0.1%	Rank history: not on the FY2021 list, #77 in FY2022, #62 in FY2024 and #50 in FY2025; down 7 since FY2022.
85	AECOM Through AECOM Technical Services, Inc. Top NAICS codes 541310 Architectural Services	$477,751	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Salter Contracting LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$467,477	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	Broadleaf, Inc. Top NAICS codes 541512 Computer Systems Design Services	$450,179	<0.1%	Rank history: #9 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; down 72 since FY2022.
88	Skillsoft Corporation Through Skillsoft (Us) LLC Top NAICS codes 511210 Software Publishers	$442,500	<0.1%	Rank history: #74 in FY2021, #81 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
89	National Association for Public Health Statistics and Information Systems, Inc. Top NAICS codes 813920 Professional Organizations	$422,471	<0.1%	Rank history: #81 in FY2021, #84 in FY2022, #87 in FY2024 and #87 in FY2025; down 5 since FY2022.
90	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$422,414	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2024 and not on the FY2025 list; up 50 since FY2022.
91	Stephen Paul Mangum Top NAICS codes 333310 Commercial and Service Industry Machinery Manufacturing	$404,475	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Datamaxx Group, Inc. Through Datamaxx Applied Technologies, Inc. Top NAICS codes 511210 Software Publishers	$375,632	<0.1%	Rank history: #83 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
93	Toffler Associates, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$355,653	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Frontier Technologies Inc. Top NAICS codes 541519 Other Computer Related Services	$354,325	<0.1%	Rank history: #88 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
95	Adnet Systems Inc. Top NAICS codes 541511 Custom Computer Programming Services	$299,988	<0.1%	Rank history: #79 in FY2021, #87 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
96	Thomson Reuters (Tax & Accounting) Inc. Through West Publishing Corporation Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals 519190 All Other Information Services	$291,136	<0.1%	Rank history: #98 in FY2021, #88 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
97	Network Runners Inc Top NAICS codes 541330 Engineering Services	$260,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Bestpass Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$225,975	<0.1%	Rank history: #95 in FY2021, #93 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
99	Celerity Government Solutions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$223,673	<0.1%	Rank history: #40 in FY2021, #89 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
100	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$215,800	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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 $1.21 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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