Top 100 Contractors in NAICS 561611: Investigation and Personal Background Check Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 561611: Investigation and Personal Background Check Services, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 74% of NAICS 561611 contract dollars from July 2025 through June 2026

Contract obligations: $991,992,710 Net of deobligations, by contracts coded NAICS 561611
Contractors: 257 Parent companies with an obligation
Largest contractor: CACI International Inc. $308 million, 29.2% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CACI International Inc. Through Caci, Inc. - Federal Top agencies DCSA (Defense Counterintelligence and Security Agency) DHS (Department of Homeland Security)	$307,545,747	29.2%	Rank history: #1 in FY2021, #2 in FY2022, #2 in FY2023, #1 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Peraton Risk Decision Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DHS (Department of Homeland Security)	$276,248,330	26.2%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Arctic Slope Regional Corporation 2 awardees, including Asrc Federal Administrative Services, LLC and Asrc Federal Professional Services, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$44,987,596	4.3%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023, #4 in FY2024 and #5 in FY2025; unchanged since Jul 2024–Jun 2025.
4	Professional Risk Management, Inc. Top agencies DOJ (Department of Justice)	$27,922,360	2.7%	Rank history: #13 in FY2021, #10 in FY2022, #8 in FY2023, #5 in FY2024 and #4 in FY2025; up 1 since Jul 2024–Jun 2025.
5	Madison Associates Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) DOS (Department of State)	$26,745,319	2.5%	Rank history: #12 in FY2021, #9 in FY2022, #7 in FY2023, #8 in FY2024 and #3 in FY2025; up 2 since Jul 2024–Jun 2025.
6	Iworks Corp Top agencies DCSA (Defense Counterintelligence and Security Agency)	$24,993,244	2.4%	Rank history: #9 in FY2021, #8 in FY2022, #9 in FY2023, #9 in FY2024 and #9 in FY2025; up 2 since Jul 2024–Jun 2025.
7	Constellis, LLC Through Omniplex World Services Corporation Top agencies DHS (Department of Homeland Security)	$23,469,200	2.2%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #10 in FY2025; up 4 since Jul 2024–Jun 2025.
8	Equifax Workforce Solutions LLC Top agencies SSA (Social Security Administration) DCSA (Defense Counterintelligence and Security Agency) DOS (Department of State)	$20,570,467	2.0%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #6 in FY2025; up 43 since Jul 2024–Jun 2025.
9	Protection Strategies Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) SEC (Securities and Exchange Commission)	$15,190,083	1.4%	Rank history: #5 in FY2021, #4 in FY2022, #3 in FY2023, #6 in FY2024 and #7 in FY2025; down 5 since Jul 2024–Jun 2025.
10	Caduceus Healthcare Inc Through Caduceus Inc. Top agencies DHS (Department of Homeland Security)	$11,965,000	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
11	Five Stones Intelligence Inc. Top agencies DOJ (Department of Justice)	$10,769,672	1.0%	Rank history: #16 in FY2021, #12 in FY2022, #11 in FY2023, #11 in FY2024 and #13 in FY2025; down 2 since Jul 2024–Jun 2025.
12	Olgoonik Innovations, LLC Top agencies DOS (Department of State)	$10,588,542	1.0%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #8 in FY2025; down 6 since Jul 2024–Jun 2025.
13	Coventbridge (USA) LLC Top agencies USDA (Department of Agriculture)	$10,307,013	1.0%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Compass United Top agencies DHS (Department of Homeland Security)	$8,916,302	0.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Septimo Solutions, LLC Top agencies DHS (Department of Homeland Security)	$8,686,250	0.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
16	Capital Center for Credibility Assessment Corporation Top agencies Navy (Department of the Navy) USCYBERCOM (Department of Defense Cyber Command) USAF (Department of the Air Force)	$7,949,565	0.8%	Rank history: #11 in FY2021, #7 in FY2022, #12 in FY2023, #19 in FY2024 and #14 in FY2025; down 6 since Jul 2024–Jun 2025.
17	Lemoine Disaster Recovery LLC Top agencies DHS (Department of Homeland Security)	$7,690,000	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
18	Anasec, Inc. Top agencies DHS (Department of Homeland Security)	$6,806,735	0.6%	Rank history: #15 in FY2021, #27 in FY2022, #22 in FY2023, #20 in FY2024 and #15 in FY2025; up 9 since Jul 2024–Jun 2025.
19	Ho-Chunk, Inc. Through Ho-Chunk Shared Services Company Top agencies USAF (Department of the Air Force)	$6,715,305	0.6%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 53 since Jul 2024–Jun 2025.
20	Continuity Global Solutions LLC Top agencies DHS (Department of Homeland Security)	$6,270,128	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	Computer Evidence Specialists, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,103,235	0.6%	Rank history: #45 in FY2021, #55 in FY2022, #49 in FY2023, #38 in FY2024 and #18 in FY2025; up 14 since Jul 2024–Jun 2025.
22	Blocktrace LLC Top agencies Treasury (Department of the Treasury)	$5,602,173	0.5%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #19 in FY2025; down 6 since Jul 2024–Jun 2025.
23	Security Insights LLC Top agencies DHS (Department of Homeland Security)	$5,507,232	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	Eaglegrace Global LLC Top agencies DHS (Department of Homeland Security)	$5,236,600	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25	Ruchman and Associates, Inc. Top agencies DODIG (Department of Defense Inspector General)	$4,893,761	0.5%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 1 since Jul 2024–Jun 2025.
26	Sos International LLC Top agencies DHS (Department of Homeland Security)	$4,866,256	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27	Capgemini Government Solutions LLC Top agencies DHS (Department of Homeland Security)	$4,816,783	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	Severance Security Services LLC Top agencies DHS (Department of Homeland Security)	$4,770,000	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
29	Savvy Professor LLC Top agencies DHS (Department of Homeland Security)	$4,727,750	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	Chenega Defense & Aerospace Solutions, LLC Top agencies Treasury (Department of the Treasury)	$4,079,581	0.4%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023, #23 in FY2024 and #22 in FY2025; down 12 since Jul 2024–Jun 2025.
31	Delta Point LLC Top agencies DHS (Department of Homeland Security)	$3,910,774	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	Response Ai Solutions, LLC Top agencies DHS (Department of Homeland Security)	$3,798,720	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	The Ross Agency, Inc. Top agencies VA (Department of Veterans Affairs)	$3,482,906	0.3%	Rank history: #27 in FY2021, #26 in FY2022, #20 in FY2023, #14 in FY2024 and #16 in FY2025; down 20 since Jul 2024–Jun 2025.
34	Potomac River Group, LLC Top agencies DOJ (Department of Justice)	$3,216,326	0.3%	Rank history: #17 in FY2021, #18 in FY2022, #16 in FY2023, #21 in FY2024 and #39 in FY2025; up 2 since Jul 2024–Jun 2025.
35	Crossroads Mediation Services, Inc. Top agencies DHS (Department of Homeland Security) DOT (Department of Transportation) USDA (Department of Agriculture)	$3,208,334	0.3%	Rank history: #29 in FY2021, #29 in FY2022, #31 in FY2023, #27 in FY2024 and #29 in FY2025; down 9 since Jul 2024–Jun 2025.
36	Applied Intellect LLC Top agencies DHS (Department of Homeland Security)	$3,080,158	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Nemean Solutions LLC Top agencies Army (Department of the Army)	$2,853,703	0.3%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #17 in FY2024 and #23 in FY2025; down 20 since Jul 2024–Jun 2025.
38	Global Recovery Group, LLC Top agencies DHS (Department of Homeland Security)	$2,812,500	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Fieldprint Inc. Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security) DOJ (Department of Justice)	$2,678,931	0.3%	Rank history: not on the FY2021 list, #90 in FY2022, not on the FY2023 list, #32 in FY2024 and #20 in FY2025; down 25 since Jul 2024–Jun 2025.
40	Bluehawk LLC Top agencies DHS (Department of Homeland Security)	$2,656,328	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	DNI Emerging Technologies, LLC Top agencies HHS (Department of Health and Human Services)	$2,536,823	0.2%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #25 in FY2024 and #26 in FY2025; down 19 since Jul 2024–Jun 2025.
42	Chenega Naswik International LLC Top agencies Navy (Department of the Navy)	$2,377,981	0.2%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #24 in FY2025; down 21 since Jul 2024–Jun 2025.
43	National Protective Services, LLC Top agencies DHS (Department of Homeland Security)	$2,076,250	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	The Baptiste Group, LLC Top agencies DHS (Department of Homeland Security)	$2,073,250	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	S.j. Bashen, Inc. Top agencies GSA (General Services Administration) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$2,008,165	0.2%	Rank history: #42 in FY2021, #38 in FY2022, #28 in FY2023, #34 in FY2024 and #25 in FY2025; down 20 since Jul 2024–Jun 2025.
46	EAP Consultants, LLC Top agencies SSA (Social Security Administration) DOI (Department of the Interior) USDA (Department of Agriculture)	$1,988,237	0.2%	Rank history: #18 in FY2021, #16 in FY2022, #14 in FY2023, #13 in FY2024 and #21 in FY2025; down 34 since Jul 2024–Jun 2025.
47	David Jones CPA PC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$1,888,283	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #35 in FY2024 and #33 in FY2025; down 15 since Jul 2024–Jun 2025.
48	Sierra Tahoe Investigations Top agencies VA (Department of Veterans Affairs)	$1,820,923	0.2%	Rank history: #39 in FY2021, #57 in FY2022, #45 in FY2023, #36 in FY2024 and #30 in FY2025; down 10 since Jul 2024–Jun 2025.
49	Origin Investigations Inc. Top agencies DHS (Department of Homeland Security)	$1,812,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
50	Old Harbor Solutions LLC Top agencies DHS (Department of Homeland Security)	$1,726,647	0.2%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	Government Retirement & Benefits, Inc. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce) Treasury (Department of the Treasury)	$1,719,487	0.2%	Rank history: #38 in FY2021, #32 in FY2022, #34 in FY2023, #26 in FY2024 and #27 in FY2025; down 31 since Jul 2024–Jun 2025.
52	The Ravens Group, Inc. Top agencies VA (Department of Veterans Affairs)	$1,649,376	0.2%	Rank history: #46 in FY2021, #52 in FY2022, #51 in FY2023, #41 in FY2024 and #32 in FY2025; down 10 since Jul 2024–Jun 2025.
53	The GEO Group, Inc. Through B.i. Incorporated Top agencies DHS (Department of Homeland Security)	$1,624,500	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
54	Critical Response Strategies, LLC Top agencies DHS (Department of Homeland Security)	$1,614,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
55	Connexus Hub Inc. Top agencies Navy (Department of the Navy)	$1,603,384	0.2%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; down 25 since Jul 2024–Jun 2025.
56	Information Discovery Services, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,296,178	0.1%	Rank history: #58 in FY2021, #61 in FY2022, #59 in FY2023, #65 in FY2024 and #35 in FY2025; down 23 since Jul 2024–Jun 2025.
57	Martin Miser Cody & Associates LLC Top agencies VA (Department of Veterans Affairs)	$1,278,044	0.1%	Rank history: #40 in FY2021, #47 in FY2022, #46 in FY2023, #39 in FY2024 and #36 in FY2025; down 18 since Jul 2024–Jun 2025.
58	Amentum Holdings, Inc. Through Amentum Services, Inc. Top agencies Army (Department of the Army)	$1,161,434	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
59	Alpha Recovery LLC Top agencies DHS (Department of Homeland Security)	$1,055,544	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	City of Hawthorne Police Department Top agencies SSA (Social Security Administration)	$891,082	0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61	Geauga County Of Top agencies SSA (Social Security Administration)	$879,199	0.1%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; down 17 since Jul 2024–Jun 2025.
62	Gant Global Services (GGS) Inc. Top agencies HUD (Department of Housing and Urban Development) VA (Department of Veterans Affairs)	$774,732	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #31 in FY2024 and #51 in FY2025; down 34 since Jul 2024–Jun 2025.
63	Adept Services, Inc. Top agencies DOJ (Department of Justice)	$773,419	0.1%	Rank history: #41 in FY2021, #45 in FY2022, #40 in FY2023, #50 in FY2024 and #44 in FY2025; down 13 since Jul 2024–Jun 2025.
64	Constellation Inc. Top agencies DHS (Department of Homeland Security)	$767,469	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
65	GSS - Government Support Services LLC Top agencies DHS (Department of Homeland Security)	$741,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	County of ST Louis Through ST. Louis County, Missouri Top agencies SSA (Social Security Administration)	$713,372	0.1%	Rank history: #55 in FY2021, #48 in FY2022, #48 in FY2023, #48 in FY2024 and #46 in FY2025; down 18 since Jul 2024–Jun 2025.
67	Icris, LLC Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce) FCC (Federal Communications Commission)	$710,329	0.1%	Rank history: #56 in FY2021, #60 in FY2022, #83 in FY2023, #62 in FY2024 and #56 in FY2025; down 12 since Jul 2024–Jun 2025.
68	Harris County Top agencies SSA (Social Security Administration)	$697,480	0.1%	Rank history: #77 in FY2021, #67 in FY2022, #44 in FY2023, #56 in FY2024 and #60 in FY2025; down 2 since Jul 2024–Jun 2025.
69	Ai Solutions 87 LLC Top agencies DHS (Department of Homeland Security)	$636,500	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	Skopenow Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$525,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, #52 in FY2024 and #53 in FY2025; up 57 since Jul 2024–Jun 2025.
71	Business Decisions Information Inc. Top agencies USDA (Department of Agriculture) DHS (Department of Homeland Security)	$474,473	<0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #73 in FY2023, #49 in FY2024 and #59 in FY2025; down 19 since Jul 2024–Jun 2025.
72	Advanced EEO Solutions LLC Top agencies Navy (Department of the Navy) RRB (Railroad Retirement Board) DOE (Department of Energy)	$454,211	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #63 in FY2023, #46 in FY2024 and #48 in FY2025; down 31 since Jul 2024–Jun 2025.
73	Gravitas Professional Services, LLC Top agencies DHS (Department of Homeland Security)	$427,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
74	Idemia Identity & Security USA LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$407,326	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Talon East Fuel Services LLC Top agencies OSD (Office of the Secretary of Defense)	$369,680	<0.1%	Rank history: not on the FY2021 list, #39 in FY2022, not on the FY2023–FY2024 lists and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
76	Fraud Inc. Top agencies DHS (Department of Homeland Security)	$348,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	City of Chicago Top agencies SSA (Social Security Administration)	$325,348	<0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #58 in FY2025; down 23 since Jul 2024–Jun 2025.
78	Madison County Prosecutor Top agencies SSA (Social Security Administration)	$305,615	<0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #57 in FY2025; down 22 since Jul 2024–Jun 2025.
79	Department of Police Puerto Rico Top agencies SSA (Social Security Administration)	$279,178	<0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; down 22 since Jul 2024–Jun 2025.
80	Key Bridge Foundation for Education and Research Top agencies DOJ (Department of Justice)	$263,168	<0.1%	Rank history: #64 in FY2021, #63 in FY2022, #41 in FY2023, #53 in FY2024 and #50 in FY2025; down 35 since Jul 2024–Jun 2025.
81	Morales & Associates LLC Top agencies USDA (Department of Agriculture) EEOC (Equal Employment Opportunity Commission)	$224,578	<0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #97 in FY2025; down 6 since Jul 2024–Jun 2025.
82	HR Anew Inc. Top agencies DHS (Department of Homeland Security)	$215,175	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #40 in FY2024 and #49 in FY2025; down 33 since Jul 2024–Jun 2025.
83	ManTech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy)	$207,717	<0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
84	Sontiq, Inc. Top agencies DOT (Department of Transportation)	$189,723	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	Kentech Consulting Inc. Top agencies DOJ (Department of Justice) SEC (Securities and Exchange Commission)	$168,655	<0.1%	Rank history: #47 in FY2021, #68 in FY2022, #75 in FY2023, #66 in FY2024 and #62 in FY2025; up 19 since Jul 2024–Jun 2025.
86	Graham Inc. Top agencies DOE (Department of Energy)	$159,565	<0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; down 5 since Jul 2024–Jun 2025.
87	Echelon Services, LLC Top agencies Army (Department of the Army)	$123,822	<0.1%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #74 in FY2025; down 22 since Jul 2024–Jun 2025.
88	Brian Shemonsky Top agencies DOJ (Department of Justice)	$122,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
89	Wilson Scott M Top agencies DOJ (Department of Justice)	$122,000	<0.1%	Rank history: #91 in FY2021, #91 in FY2022, #80 in FY2023, not on the FY2024 list and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Mind Your Business Inc Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$103,865	<0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #73 in FY2024 and #70 in FY2025; down 16 since Jul 2024–Jun 2025.
91	National Law Enforcement Telecommunication System (Nlets), Inc. Top agencies DHS (Department of Homeland Security)	$91,834	<0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #80 in FY2025; down 15 since Jul 2024–Jun 2025.
92	Gotham Dynamics Inc. Top agencies DOJ (Department of Justice) Peace Corps	$80,060	<0.1%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #92 in FY2025; up 4 since Jul 2024–Jun 2025.
93	Rock Solid Options Inc. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) EXIM (Export Import Bank of the US)	$75,835	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; down 11 since Jul 2024–Jun 2025.
94	Renaissance Associates Ltd Top agencies DOJ (Department of Justice)	$74,900	<0.1%	Rank history: #65 in FY2021, #79 in FY2022, not on the FY2023–FY2024 lists and #85 in FY2025; down 5 since Jul 2024–Jun 2025.
95	Relx Inc. 4 awardees, including Lexisnexis Risk Solutions Inc., Lexisnexis Risk Solutions FL Inc. and Lexisnexis Special Services Inc. Top agencies Treasury (Department of the Treasury) DOJ (Department of Justice) DHS (Department of Homeland Security)	$68,789	<0.1%	Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and #87 in FY2025; down 42 since Jul 2024–Jun 2025.
96	Forensic Case Solutions Inc. Top agencies DHS (Department of Homeland Security)	$60,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Lebby, Nicole V Top agencies DOJ (Department of Justice)	$56,294	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; down 9 since Jul 2024–Jun 2025.
98	Kreller Group Inc. Through Kreller Business Information Group Inc. Top agencies EXIM (Export Import Bank of the US)	$55,210	<0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; down 12 since Jul 2024–Jun 2025.
99	Kovacs, Andrew S Top agencies DOJ (Department of Justice)	$54,164	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 41 since Jul 2024–Jun 2025.
100	Berry William C Top agencies FCC (Federal Communications Commission)	$50,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 13 since Jul 2024–Jun 2025.

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100 of 257 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $1.05 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 561611 contractors in Jul 2025–Jun 2026?

1. CACI International Inc. ($308M), 2. Peraton Risk Decision Inc. ($276M), 3. Arctic Slope Regional Corporation ($45M), 4. Professional Risk Management, Inc. ($27.9M), 5. Madison Associates Inc. ($26.7M), 6. Iworks Corp ($25M), 7. Constellis, LLC ($23.5M), 8. Equifax Workforce Solutions LLC ($20.6M), 9. Protection Strategies Inc. ($15.2M), 10. Caduceus Healthcare Inc ($12M).

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