Top 100 Contractors in NAICS 51929: Web Search Portals and All Other Information Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 51929: Web Search Portals and All Other Information 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 57% of NAICS 51929 contract dollars from July 2025 through June 2026

Contract obligations: $285,379,712 Net of deobligations, by contracts coded NAICS 51929 or a code under it
Contractors: 273 Parent companies with an obligation
Largest contractor: American Chemical Society $32.8 million, 11.3% of obligations
Data as of: Oct 16, 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	American Chemical Society Top agencies Commerce (Department of Commerce) Army (Department of the Army) EPA (Environmental Protection Agency)	$32,821,444	11.3%	Rank history: #43 in FY2023, #66 in FY2024 and #6 in FY2025; up 67 since Jul 2024–Jun 2025.
2	Lexisnexis Special Services Inc 4 awardees, including Relx Inc., Elsevier Inc. and Lexisnexis Risk Solutions Inc. Top agencies SSA (Social Security Administration) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$32,245,744	11.1%	Rank history: #3 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	West Publishing Corporation 3 awardees, including Clarivate Analytics (Us) LLC and Refinitiv US LLC Top agencies Treasury (Department of the Treasury) SSA (Social Security Administration) Army (Department of the Army)	$20,478,583	7.1%	Rank history: not on the FY2023 list, #8 in FY2024 and #3 in FY2025; up 2 since Jul 2024–Jun 2025.
4	Ebsco Information Services, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$15,725,056	5.4%	Rank history: #5 in FY2023, #6 in FY2024 and #8 in FY2025; up 4 since Jul 2024–Jun 2025.
5	Uptodate, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$14,307,218	4.9%	Rank history: not on the FY2023 list, #5 in FY2024 and #5 in FY2025; up 1 since Jul 2024–Jun 2025.
6	Allium US Holding LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$11,745,797	4.1%	Rank history: not on the FY2023 list, #15 in FY2024 and #2 in FY2025; down 2 since Jul 2024–Jun 2025.
7	Hypori, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,909,700	3.8%	Rank history: not on the FY2023 list, #2 in FY2024 and #7 in FY2025; down 5 since Jul 2024–Jun 2025.
8	Dun & Bradstreet, Inc. Top agencies DHS (Department of Homeland Security) EOP (Executive Office of the President) USAF (Department of the Air Force)	$9,775,966	3.4%	Rank history: not on the FY2023 list, #7 in FY2024 and #9 in FY2025; up 1 since Jul 2024–Jun 2025.
9	Gartner, Inc. Top agencies DOS (Department of State) DOE (Department of Energy) USDA (Department of Agriculture)	$9,084,002	3.1%	Rank history: #48 in FY2023, #3 in FY2024 and #4 in FY2025; down 6 since Jul 2024–Jun 2025.
10	Graham Advisory Network Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$7,769,085	2.7%	Rank history: #6 in FY2023, #16 in FY2024 and #16 in FY2025; up 24 since Jul 2024–Jun 2025.
11	Bloomberg Finance LP Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) DOI (Department of the Interior)	$7,135,921	2.5%	Rank history: not on the FY2023 list, #9 in FY2024 and #10 in FY2025; down 1 since Jul 2024–Jun 2025.
12	IHS Global Inc 2 awardees Top agencies DOI (Department of the Interior) Commerce (Department of Commerce) USAF (Department of the Air Force)	$5,775,140	2.0%	Rank history: not on the FY2023 list, #17 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
13	Cox Subscriptions, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences)	$5,558,434	1.9%	Rank history: #23 in FY2023, #10 in FY2024 and #12 in FY2025; unchanged since Jul 2024–Jun 2025.
14	Moody'S Corporation Through Moody's Analytics, Inc. Top agencies HUD (Department of Housing and Urban Development) Treasury (Department of the Treasury) DFC (International Development Finance Corporation)	$5,331,296	1.8%	Rank history: #1 in FY2023, #4 in FY2024 and #15 in FY2025; down 7 since Jul 2024–Jun 2025.
15	Clarivate Analytics (Us) LLC Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture) DOE (Department of Energy)	$5,135,814	1.8%	Rank history: #17 in FY2023, #14 in FY2024 and #13 in FY2025; down 3 since Jul 2024–Jun 2025.
16	S&P Global Market Intelligence LLC Top agencies Treasury (Department of the Treasury) Commerce (Department of Commerce) DOE (Department of Energy)	$4,665,009	1.6%	Rank history: not on the FY2023 list, #21 in FY2024 and #18 in FY2025; up 9 since Jul 2024–Jun 2025.
17	Refinitiv US LLC Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) DOE (Department of Energy)	$3,332,524	1.1%	Rank history: not on the FY2023 list, #18 in FY2024 and #20 in FY2025; down 1 since Jul 2024–Jun 2025.
18	Bloomberg LP 2 awardees, including Bloomberg Industry Group, Inc. Top agencies Treasury (Department of the Treasury) PBGC (Pension Benefit Guaranty Corporation) DOJ (Department of Justice)	$3,115,485	1.1%	Rank history: #2 in FY2023, #12 in FY2024 and #23 in FY2025; up 13 since Jul 2024–Jun 2025.
19	Lnrs Data Services Inc. Top agencies DOT (Department of Transportation) DOE (Department of Energy) NTSB (National Transportation Safety Board)	$2,930,516	1.0%	Rank history: not on the FY2023 list, #22 in FY2024 and #28 in FY2025; up 19 since Jul 2024–Jun 2025.
20	Prenax Inc. Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$2,825,712	1.0%	Rank history: not on the FY2023–FY2025 lists; up 92 since Jul 2024–Jun 2025.
21	Ntrepid, LLC Top agencies DOJ (Department of Justice)	$2,605,039	0.9%	Rank history: not on the FY2023–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	National Student Clearinghouse Top agencies DCSA (Defense Counterintelligence and Security Agency)	$2,601,730	0.9%	Rank history: not on the FY2023 list, #11 in FY2024 and #14 in FY2025; down 8 since Jul 2024–Jun 2025.
23	TRM Labs, Inc. Top agencies Treasury (Department of the Treasury)	$2,432,800	0.8%	Rank history: not on the FY2023–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Fiscalnote Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) FCC (Federal Communications Commission)	$2,360,013	0.8%	Rank history: not on the FY2023 list, #35 in FY2024 and #33 in FY2025; up 16 since Jul 2024–Jun 2025.
25	Pen-Link, Ltd Top agencies DHS (Department of Homeland Security)	$2,284,750	0.8%	Rank history: not on the FY2023–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Chickasaw Business Solutions, LLC Top agencies DOE (Department of Energy)	$2,135,837	0.7%	Rank history: not on the FY2023–FY2024 lists and #19 in FY2025; down 9 since Jul 2024–Jun 2025.
27	Factiva Inc. Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) DOS (Department of State)	$2,112,414	0.7%	Rank history: not on the FY2023 list, #24 in FY2024 and #17 in FY2025; down 1 since Jul 2024–Jun 2025.
28	Logical Images, Inc. Top agencies VA (Department of Veterans Affairs)	$1,782,496	0.6%	Rank history: not on the FY2023 list, #28 in FY2024 and #27 in FY2025; down 1 since Jul 2024–Jun 2025.
29	Costar Realty Information, Inc. Top agencies HUD (Department of Housing and Urban Development) GSA (General Services Administration) VA (Department of Veterans Affairs)	$1,744,173	0.6%	Rank history: not on the FY2023 list, #19 in FY2024 and #26 in FY2025; down 11 since Jul 2024–Jun 2025.
30	Bloomberg Industry Group Inc. Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) DOL (Department of Labor)	$1,678,210	0.6%	Rank history: #2 in FY2023, #12 in FY2024 and not on the FY2025 list; down 8 since Jul 2024–Jun 2025.
31	Unison Virtual Acquisition Office LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) Treasury (Department of the Treasury)	$1,665,291	0.6%	Rank history: not on the FY2023 list, #13 in FY2024 and #22 in FY2025; down 3 since Jul 2024–Jun 2025.
32	Thundercat Technology LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$1,603,793	0.6%	Rank history: #31 in FY2023, #27 in FY2024 and #35 in FY2025; down 13 since Jul 2024–Jun 2025.
33	National Law Enforcement Telecommunication System (Nlets), Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) SSA (Social Security Administration) VA (Department of Veterans Affairs)	$1,537,530	0.5%	Rank history: #28 in FY2023, #63 in FY2024 and #38 in FY2025; up 16 since Jul 2024–Jun 2025.
34	Fitch Solutions, Inc. Top agencies Treasury (Department of the Treasury) HUD (Department of Housing and Urban Development) Commerce (Department of Commerce)	$1,478,006	0.5%	Rank history: not on the FY2023–FY2024 lists and #50 in FY2025; up 31 since Jul 2024–Jun 2025.
35	Adenza Inc Top agencies CFTC (Commodity Futures Trading Commission)	$1,437,503	0.5%	Rank history: not on the FY2023–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Synergy Enterprises, Inc. Top agencies HHS (Department of Health and Human Services)	$1,370,453	0.5%	Rank history: #9 in FY2023, #32 in FY2024 and #32 in FY2025; unchanged since Jul 2024–Jun 2025.
37	Proquest LLC Top agencies DODEA (Department of Defense Education Activity) GAO (Government Accountability Office) DOJ (Department of Justice)	$1,314,122	0.5%	Rank history: not on the FY2023 list, #25 in FY2024 and #29 in FY2025; down 16 since Jul 2024–Jun 2025.
38	Montage + Magnum, LLC Top agencies NSF (National Science Foundation)	$1,301,193	0.4%	Rank history: not on the FY2023 list, #34 in FY2024 and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Tax Analysts Top agencies Treasury (Department of the Treasury) GAO (Government Accountability Office)	$1,198,839	0.4%	Rank history: #16 in FY2023, #38 in FY2024 and #37 in FY2025; unchanged since Jul 2024–Jun 2025.
40	S&P Global Inc. 3 awardees, including Crisil Irevna US LLC and Markit North America Inc. Top agencies Treasury (Department of the Treasury) SEC (Securities and Exchange Commission)	$1,124,395	0.4%	Rank history: #90 in FY2023, not on the FY2024 list and #76 in FY2025; up 115 since Jul 2024–Jun 2025.
41	Leadership Connect, Inc. Top agencies GAO (Government Accountability Office) Commerce (Department of Commerce) EPA (Environmental Protection Agency)	$1,065,461	0.4%	Rank history: #72 in FY2023, #56 in FY2024 and #36 in FY2025; up 3 since Jul 2024–Jun 2025.
42	CQ-Roll Call Inc 3 awardees, including Financial Times Limited(The) and The Economist Intelligence Unit, NA, Incorporated Top agencies Commerce (Department of Commerce) SEC (Securities and Exchange Commission) Navy (Department of the Navy)	$1,060,780	0.4%	Rank history: #33 in FY2023, #69 in FY2024 and #57 in FY2025; up 22 since Jul 2024–Jun 2025.
43	Argus Media Inc. Top agencies DOE (Department of Energy) Treasury (Department of the Treasury)	$1,038,836	0.4%	Rank history: #19 in FY2023, #41 in FY2024 and #39 in FY2025; down 1 since Jul 2024–Jun 2025.
44	Cadca Top agencies DOJ (Department of Justice)	$998,002	0.3%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	John Wiley & Sons Inc. Top agencies USDA (Department of Agriculture) USUHS (DOD Uniformed Services University of the Health Sciences) Navy (Department of the Navy)	$995,226	0.3%	Rank history: not on the FY2023 list, #46 in FY2024 and #41 in FY2025; unchanged since Jul 2024–Jun 2025.
46	Thorn Top agencies DHS (Department of Homeland Security)	$933,920	0.3%	Rank history: not on the FY2023–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	LRP Publications, Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$921,760	0.3%	Rank history: #27 in FY2023, #51 in FY2024 and #40 in FY2025; down 4 since Jul 2024–Jun 2025.
48	Institute of Electrical & Electronics Engineers Inc. Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) GAO (Government Accountability Office)	$876,680	0.3%	Rank history: not on the FY2023 list, #40 in FY2024 and #46 in FY2025; down 19 since Jul 2024–Jun 2025.
49	Mcgraw Hill LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$863,436	0.3%	Rank history: not on the FY2023–FY2024 lists and #43 in FY2025; up 145 since Jul 2024–Jun 2025.
50	CCH Incorporated Top agencies SEC (Securities and Exchange Commission) SSA (Social Security Administration) Treasury (Department of the Treasury)	$856,632	0.3%	Rank history: not on the FY2023 list, #48 in FY2024 and #48 in FY2025; up 1 since Jul 2024–Jun 2025.
51	Ho-Chunk, Inc. 2 awardees, including Allnative Solutions Corporation and Flatwater, Incorporated Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$814,072	0.3%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	The Ives Group, Inc. Top agencies SEC (Securities and Exchange Commission)	$800,695	0.3%	Rank history: not on the FY2023–FY2024 lists and #47 in FY2025; down 5 since Jul 2024–Jun 2025.
53	Informa Business Media Inc. 3 awardees, including Taylor & Francis Group LLC, Informa Media LLC and Informa TECH LLC Top agencies USDA (Department of Agriculture) DOT (Department of Transportation) Navy (Department of the Navy)	$796,293	0.3%	Rank history: not on the FY2023 list, #47 in FY2024 and #64 in FY2025; down 12 since Jul 2024–Jun 2025.
54	Factset Research Systems Inc. Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) CFTC (Commodity Futures Trading Commission)	$677,928	0.2%	Rank history: #25 in FY2023, #52 in FY2024 and #49 in FY2025; down 1 since Jul 2024–Jun 2025.
55	William S. Hein & Co., Inc. Top agencies Treasury (Department of the Treasury) DOJ (Department of Justice) DOS (Department of State)	$670,905	0.2%	Rank history: #50 in FY2023, #65 in FY2024 and #55 in FY2025; up 4 since Jul 2024–Jun 2025.
56	Datix (USA) Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$627,927	0.2%	Rank history: not on the FY2023 list, #58 in FY2024 and #58 in FY2025; unchanged since Jul 2024–Jun 2025.
57	Jane's Group UK Limited Top agencies DHS (Department of Homeland Security)	$583,200	0.2%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Stryder Corp. Top agencies OPM (Office of Personnel Management) HHS (Department of Health and Human Services)	$570,115	0.2%	Rank history: not on the FY2023 list, #33 in FY2024 and #74 in FY2025; down 26 since Jul 2024–Jun 2025.
59	American Psychiatric Association Top agencies VA (Department of Veterans Affairs)	$553,088	0.2%	Rank history: #26 in FY2023, #54 in FY2024 and #59 in FY2025; down 4 since Jul 2024–Jun 2025.
60	Poplicus Incorporated Top agencies Commerce (Department of Commerce)	$540,000	0.2%	Rank history: not on the FY2023 list, #43 in FY2024 and #61 in FY2025; down 12 since Jul 2024–Jun 2025.
61	Inventory Locator Service, LLC Top agencies DLA (Defense Logistics Agency)	$521,261	0.2%	Rank history: not on the FY2023 list, #67 in FY2024 and #62 in FY2025; unchanged since Jul 2024–Jun 2025.
62	Heights Labs, Inc. Top agencies DHS (Department of Homeland Security)	$500,000	0.2%	Rank history: not on the FY2023–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Ebsco Industries Inc. Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury) FTC (Federal Trade Commission)	$499,195	0.2%	Rank history: not on the FY2023–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Potomacwave, Inc. Top agencies DOS (Department of State)	$490,720	0.2%	Rank history: not on the FY2023–FY2024 lists and #52 in FY2025; down 14 since Jul 2024–Jun 2025.
65	Morningstar Inc. 2 awardees, including Pitchbook Data Inc. Top agencies SEC (Securities and Exchange Commission) Treasury (Department of the Treasury) PBGC (Pension Benefit Guaranty Corporation)	$486,524	0.2%	Rank history: #11 in FY2023, not on the FY2024 list and #65 in FY2025; up 34 since Jul 2024–Jun 2025.
66	Oclc, Inc. Top agencies USDA (Department of Agriculture) DHS (Department of Homeland Security) Navy (Department of the Navy)	$476,802	0.2%	Rank history: not on the FY2023–FY2024 lists and #73 in FY2025; up 19 since Jul 2024–Jun 2025.
67	Loveland Technologies LLC Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce)	$474,350	0.2%	Rank history: not on the FY2023–FY2024 lists and #77 in FY2025; up 31 since Jul 2024–Jun 2025.
68	Corelogic Solutions, LLC Top agencies HUD (Department of Housing and Urban Development) Treasury (Department of the Treasury)	$455,862	0.2%	Rank history: not on the FY2023–FY2025 lists; up 79 since Jul 2024–Jun 2025.
69	Ivix TECH Inc. Top agencies Treasury (Department of the Treasury)	$450,000	0.2%	Rank history: not on the FY2023–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Technology - Management & Innovative Solutions, LLC Top agencies DHS (Department of Homeland Security)	$438,384	0.2%	Rank history: #36 in FY2023, #42 in FY2024 and #67 in FY2025; down 8 since Jul 2024–Jun 2025.
71	J.e. Federal Enterprises, Llc. Top agencies VA (Department of Veterans Affairs)	$422,632	0.1%	Rank history: #46 in FY2023, #70 in FY2024 and #72 in FY2025; unchanged since Jul 2024–Jun 2025.
72	Symplr Software LLC Top agencies DHA (Defense Health Agency)	$383,312	0.1%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Cision US Inc. Top agencies Treasury (Department of the Treasury) NSF (National Science Foundation) ED (Department of Education)	$368,027	0.1%	Rank history: not on the FY2023 list, #55 in FY2024 and #98 in FY2025; unchanged since Jul 2024–Jun 2025.
74	Dtn, LLC Top agencies CFTC (Commodity Futures Trading Commission) USDA (Department of Agriculture)	$367,760	0.1%	Rank history: not on the FY2023–FY2024 lists and #75 in FY2025; down 11 since Jul 2024–Jun 2025.
75	American Society for Testing and Materials Top agencies Army (Department of the Army) Navy (Department of the Navy) NRC (Nuclear Regulatory Commission)	$363,556	0.1%	Rank history: not on the FY2023–FY2025 lists; up 54 since Jul 2024–Jun 2025.
76	American Registry for Internet Numbers, Ltd. Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$359,100	0.1%	Rank history: not on the FY2023–FY2025 lists; up 145 since Jul 2024–Jun 2025.
77	Data Axle, Inc. Top agencies USDA (Department of Agriculture)	$350,000	0.1%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
78	Jane's Group US LLC Top agencies Army (Department of the Army) EXIM (Export Import Bank of the US) Navy (Department of the Navy)	$326,828	0.1%	Rank history: #29 in FY2023, #57 in FY2024 and not on the FY2025 list; down 9 since Jul 2024–Jun 2025.
79	National Association for Public Health Statistics and Information Systems, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency)	$320,535	0.1%	Rank history: not on the FY2023–FY2024 lists and #54 in FY2025; down 27 since Jul 2024–Jun 2025.
80	Octus Intelligence, Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation) Treasury (Department of the Treasury) DOJ (Department of Justice)	$311,517	0.1%	Rank history: #96 in FY2023, #71 in FY2024 and not on the FY2025 list; up 151 since Jul 2024–Jun 2025.
81	Thomson Reuters (Tax & Accounting), Inc. Top agencies Treasury (Department of the Treasury)	$307,030	0.1%	Rank history: #21 in FY2023, #31 in FY2024 and #78 in FY2025; down 2 since Jul 2024–Jun 2025.
82	Calcbench, Inc. Top agencies SEC (Securities and Exchange Commission)	$302,400	0.1%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
83	State Analysis, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$293,646	0.1%	Rank history: not on the FY2023 list, #84 in FY2024 and #86 in FY2025; down 7 since Jul 2024–Jun 2025.
84	Microhealth LLC Top agencies DOE (Department of Energy)	$292,346	0.1%	Rank history: not on the FY2023 list, #26 in FY2024 and #25 in FY2025; down 69 since Jul 2024–Jun 2025.
85	Ibisworld Inc. Top agencies Army (Department of the Army) Treasury (Department of the Treasury) DOT (Department of Transportation)	$279,709	0.1%	Rank history: not on the FY2023 list, #89 in FY2024 and #83 in FY2025; down 2 since Jul 2024–Jun 2025.
86	Vikusa LLC Top agencies FCC (Federal Communications Commission)	$271,234	0.1%	Rank history: not on the FY2023 list, #39 in FY2024 and #56 in FY2025; down 12 since Jul 2024–Jun 2025.
87	Oxford University Press LLC Through The Chancellor Masters & Scholars of the University of Oxford Top agencies USDA (Department of Agriculture) DOJ (Department of Justice) Navy (Department of the Navy)	$256,144	0.1%	Rank history: not on the FY2023 list, #73 in FY2024 and #82 in FY2025; down 3 since Jul 2024–Jun 2025.
88	Getty Images (Us), Inc. Top agencies Treasury (Department of the Treasury) SEC (Securities and Exchange Commission) DOS (Department of State)	$255,056	0.1%	Rank history: not on the FY2023 list, #91 in FY2024 and not on the FY2025 list; up 18 since Jul 2024–Jun 2025.
89	Domaintools LLC Top agencies USCYBERCOM (Department of Defense Cyber Command) Treasury (Department of the Treasury) DOJ (Department of Justice)	$249,275	0.1%	Rank history: #80 in FY2023 and not on the FY2024–FY2025 lists; up 76 since Jul 2024–Jun 2025.
90	Samples Professional Healthcare Consulting, LLC Top agencies DOJ (Department of Justice)	$243,383	0.1%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Wood Mackenzie Inc Top agencies DOE (Department of Energy) DOI (Department of the Interior)	$243,214	0.1%	Rank history: not on the FY2023 list, #74 in FY2024 and #69 in FY2025; unchanged since Jul 2024–Jun 2025.
92	Digital Vertex Federal, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$230,971	0.1%	Rank history: not on the FY2023–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
93	Transitsecurityreport.com Inc. Top agencies USAF (Department of the Air Force)	$225,000	0.1%	Rank history: not on the FY2023 list, #99 in FY2024 and #91 in FY2025; up 8 since Jul 2024–Jun 2025.
94	Politico, LLC Top agencies GAO (Government Accountability Office)	$224,169	0.1%	Rank history: not on the FY2023 list, #30 in FY2024 and #84 in FY2025; down 34 since Jul 2024–Jun 2025.
95	News Corporation Through Dow Jones & Company, Inc. Top agencies USAF (Department of the Air Force)	$221,624	0.1%	Rank history: #63 in FY2023, #87 in FY2024 and #92 in FY2025; down 3 since Jul 2024–Jun 2025.
96	Cerifi LLC Top agencies SSA (Social Security Administration) DOJ (Department of Justice)	$220,490	0.1%	Rank history: #71 in FY2023, #93 in FY2024 and #93 in FY2025; down 1 since Jul 2024–Jun 2025.
97	Resonance Alliance Inc. Top agencies DOS (Department of State)	$220,000	0.1%	Rank history: not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Vistra Communications, LLC Top agencies VA (Department of Veterans Affairs)	$215,308	0.1%	Rank history: not on the FY2023 list, #95 in FY2024 and #87 in FY2025; down 5 since Jul 2024–Jun 2025.
99	Cengage Learning Holdings II Inc. Through Cengage Learning, Inc. Top agencies USAF (Department of the Air Force) DOJ (Department of Justice)	$201,557	0.1%	Rank history: not on the FY2023–FY2024 lists and #53 in FY2025; down 42 since Jul 2024–Jun 2025.
100	Paydesk Limited Top agencies USAGM (US Agency for Global Media)	$200,000	0.1%	Rank history: not on the FY2023–FY2024 lists and #94 in FY2025; new, not ranked in Jul 2024–Jun 2025.

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100 of 273 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 51929

Code	Net obligations	Largest contractor
519290 Web Search Portals and All Other Information Services	$285,379,712	American Chemical Society

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 $290 million 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 FY2023, #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 51929 contractors in Jul 2025–Jun 2026?

1. American Chemical Society ($32.8M), 2. Lexisnexis Special Services Inc ($32.2M), 3. West Publishing Corporation ($20.5M), 4. Ebsco Information Services, LLC ($15.7M), 5. Uptodate, Inc. ($14.3M), 6. Allium US Holding LLC ($11.7M), 7. Hypori, Inc. ($10.9M), 8. Dun & Bradstreet, Inc. ($9.78M), 9. Gartner, Inc. ($9.08M), 10. Graham Advisory Network Inc. ($7.77M).

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