Company lists · Data refreshed September 2026

Top 25 Digital advertising platforms based in the United States

Name: Digital advertising platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 3,106 companies tracked

RevenueBase identified 3,106 digital advertising platforms headquartered in the United States as of September 2026 and tracks 73,452 professional contacts across them, including 28,522 with verified work emails and 24,711 with mobile numbers. New York is the largest hub.

This list covers digital advertising platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

3,106Companies

73,452Contacts tracked

28,522Verified emails

24,711Mobile numbers

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The 25 largest digital advertising platforms based in the United States

Ranked by team size

Top 25 of 3,106 digital advertising platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to digital advertising platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	HIBU	Partial evidence	Cedar Rapids, IA, United States	1,001-5,000	4,480 contacts →
	Partial evidence “Hibu is a leading provider of technology-driven, integrated digital marketing solutions for America’s local businesses, trusted by tens of thousands of local business owners.” Source: RevenueBase Database · checked Sep 1, 2026
2	The Trade Desk	Indirect evidence	Boston, MA, United States	1,001-5,000	4,241 contacts →
	Indirect evidence “It's more than just clicks.” Source: RevenueBase Database · checked Sep 1, 2026
3	Clear Channel Outdoor	Partial evidence	New York, NY, United States	1,001-5,000	2,453 contacts →
	Partial evidence “Clear Channel Outdoor Holdings, Inc.(NYSE: CCO) is at the forefront of driving innovation in the out-of-home advertising industry.” Source: RevenueBase Database · checked Sep 1, 2026
4	Taboola	Partial evidence	New York, NY, United States	1,001-5,000	1,978 contacts →
	Partial evidence “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Source: RevenueBase Database · checked Sep 1, 2026
5	TEADS	Strong evidence	New York, NY, United States	1,001-5,000	1,794 contacts →
	Strong evidence “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Source: RevenueBase Database · checked Sep 1, 2026
6	Constant Contact	Partial evidence	Gainesville, FL, United States	1,001-5,000	1,636 contacts →
	Partial evidence “We deliver for small businesses with powerful tools to simplify and amplify digital marketing.” Source: RevenueBase Database · checked Sep 1, 2026
7	Localiq	Partial evidence	New York, NY, United States	1,001-5,000	1,541 contacts →
	Partial evidence “Grow your business with digital marketing powered by AI and local expertise.” Source: RevenueBase Database · checked Sep 1, 2026
8	Inmobi Advertising	Strong evidence	New York, United States	1,001-5,000	1,320 contacts →
	Strong evidence “InMobi Advertising is a leading global programmatic platform specializing in mobile-first solutions that drive customer growth.” Source: RevenueBase Database · checked Sep 1, 2026
9	Pubmatic	Strong evidence	Redwood City, CA, United States	501-1,000	1,285 contacts →
	Strong evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 1, 2026
10	CJ	Indirect evidence	Santa Barbara, CA, United States	501-1,000	1,209 contacts →
	Indirect evidence “From pioneering affiliate marketing to powering the future of connected commerce, CJ has been the trusted leader in partnership-based growth since 1998.” Source: RevenueBase Database · checked Sep 1, 2026
11	Centerfield	Indirect evidence	Los Angeles, CA, United States	1,001-5,000	1,057 contacts →
	Indirect evidence “Super-powered customer acquisition.” Source: RevenueBase Database · checked Sep 1, 2026
12	Quinstreet	Partial evidence	Foster City, CA, United States	501-1,000	1,025 contacts →
	Partial evidence “Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: RevenueBase Database · checked Sep 1, 2026
13	Samsung ADS	Partial evidence	New York, NY, United States	501-1,000	988 contacts →
	Partial evidence “Samsung Ads is Samsung Electronics’ advertising ecosystem, spanning hundreds of millions of smart devices across TV, mobile, desktop, and beyond.” Source: RevenueBase Database · checked Sep 1, 2026
14	Ibotta	Strong evidence	Denver, CO, United States	501-1,000	974 contacts →
	Strong evidence “Built in Denver, CO, Ibotta ("I bought a.")(NYSE: IBTA) is a performance marketing platform allowing brands to deliver digital promotions to over 200 million consumers through a…” Source: RevenueBase Database · checked Sep 1, 2026
15	Logical Position	Indirect evidence	Lake Oswego, OR, United States	501-1,000	899 contacts →
	Indirect evidence “Logical Position (LP) is an Inc.” Source: RevenueBase Database · checked Sep 1, 2026
16	BASIS	Partial evidence	Chicago, IL, United States	501-1,000	886 contacts →
	Partial evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 1, 2026
17	DT	Indirect evidence	Arlington, VA, United States	501-1,000	751 contacts →
	Indirect evidence “DT (NASDAQ: APPS) is unifying the mobile ecosystem by connecting advertisers, app owners, and device partners through on-device integrations, direct app partnerships, and…” Source: RevenueBase Database · checked Sep 1, 2026
18	simpli.fi	Indirect evidence	Fort Worth, TX, United States	501-1,000	677 contacts →
	Indirect evidence “Simpli.fi provides marketing technologies, solutions, and workflow automation for advertisers and agencies of all sizes.” Source: RevenueBase Database · checked Sep 1, 2026
19	Nexxen	Strong evidence	New York, NY, United States	501-1,000	666 contacts →
	Strong evidence “Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: RevenueBase Database · checked Sep 1, 2026
20	Innovid	Partial evidence	Chicago, IL, United States	501-1,000	640 contacts →
	Partial evidence “Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.” Source: RevenueBase Database · checked Sep 1, 2026
21	Perion	Partial evidence	New York, NY, United States	501-1,000	613 contacts →
	Partial evidence “Perion is helping agencies, brands and retailers get better results with their marketing investments by providing advanced technology across all major digital channels.” Source: RevenueBase Database · checked Sep 1, 2026
22	MGID	Strong evidence	Los Angeles, CA, United States	501-1,000	571 contacts →
	Strong evidence “MGID is a global advertising platform helping brands and publishers succeed on the open web with performance-driven, AI-powered native solutions.” Source: RevenueBase Database · checked Sep 1, 2026
23	SKAI	Partial evidence	San Francisco, CA, United States	501-1,000	565 contacts →
	Partial evidence “Skai is the leading omnichannel platform for commerce media, enabling brands and agencies to connect data, insights, and execution across the world’s largest publishers and…” Source: RevenueBase Database · checked Sep 1, 2026
24	Quantcast	Partial evidence	Seattle, WA, United States	501-1,000	496 contacts →
	Partial evidence “Quantcast is the AI-powered ad platform built for performance marketers.” Source: RevenueBase Database · checked Sep 1, 2026
25	Localedge	Partial evidence	Buffalo, NY, United States	501-1,000	386 contacts →
	Partial evidence “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: digital advertising platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names digital advertising platforms.
Partial evidence: Its own public description names part of digital advertising platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name digital advertising platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 3,106 digital advertising platforms based in the United States

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Digital advertising platforms based in the United States at a glance

As of Sep 1, 2026

38.8%Verified-email coverage

33.6%Mobile-number coverage

23.6Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

1,615

11-50

1,005

51-200

316

201-500

501-1,000

1,001-5,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among digital advertising platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “digital advertising platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names digital advertising platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among digital advertising platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 28,522 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Digital advertising platforms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names digital advertising platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many digital advertising platforms are there based in the United States?

RevenueBase identified 3,106 digital advertising platforms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

HIBU, headquartered in Cedar Rapids, tops this list with the largest team on record.

Which city has the most digital advertising platforms?

New York leads with 369 headquartered companies, followed by Los Angeles (130) and San Francisco (129).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 28,522 verified decision-maker contacts tracked across these 3,106 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.