Company lists · Data refreshed September 2026

Top 25 Supply-side platforms based in the United States

Name: Supply-side 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 6, 2026 567 companies tracked

RevenueBase identified 567 supply-side platforms headquartered in the United States as of September 2026 and tracks 27,093 professional contacts across them, including 12,423 with verified work emails and 8,095 with mobile numbers. New York is the largest hub.

This list covers supply-side 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 6, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

567Companies

27,093Contacts tracked

12,423Verified emails

8,095Mobile numbers

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The 25 largest supply-side platforms based in the United States

Ranked by team size

Top 25 of 567 supply-side platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to supply-side 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	The Trade Desk	Indirect evidence	Ventura, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	4,307 contacts →
	Indirect evidence “It's more than just clicks.” Source: RevenueBase Database · checked Sep 6, 2026
2	Taboola	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,979 contacts →
	Indirect 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 6, 2026
3	TEADS	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,789 contacts →
	Partial 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 6, 2026
4	Pubmatic	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 6, 2026	501-1,000	1,297 contacts →
	Indirect evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 6, 2026
5	Freewheel	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,273 contacts →
	Indirect evidence “FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.” Source: RevenueBase Database · checked Sep 6, 2026
6	BASIS	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	891 contacts →
	Indirect evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 6, 2026
7	Nexxen	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	673 contacts →
	Partial evidence “Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: RevenueBase Database · checked Sep 6, 2026
8	Innovid	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	640 contacts →
	Strong 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 6, 2026
9	MGID	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	501-1,000	568 contacts →
	Partial 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 6, 2026
10	Raptive	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	525 contacts →
	Partial evidence “Raptive provides higher revenue through superior ad tech, expert strategy, and best-in-class support.” Source: RevenueBase Database · checked Sep 6, 2026
11	OPENX	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 6, 2026	201-500	464 contacts →
	Indirect evidence “OpenX is The Intelligent SSP™, simplifying advertising through quality standards, data leadership, and future-ready infrastructure with a clear promise: to make media work better…” Source: RevenueBase Database · checked Sep 6, 2026
12	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	446 contacts →
	Indirect evidence “Affinity is a leading global AdTech company, empowering publishers to maximize revenue and enabling advertisers to reach their ideal audiences.” Source: RevenueBase Database · checked Sep 6, 2026
13	VERVE	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	436 contacts →
	Indirect evidence “Verve is a global leading advertising technology company, connecting advertisers seeking to buy digital ad space with publishers monetizing their content.” Source: RevenueBase Database · checked Sep 6, 2026
14	Viant Technology	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	201-500	418 contacts →
	Indirect evidence “Viant Technology Inc.(NASDAQ: DSP) is a leader in AI-powered programmatic advertising, dedicated to driving innovation in digital marketing.” Source: RevenueBase Database · checked Sep 6, 2026
15	Triplelift	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	402 contacts →
	Indirect evidence “TripleLift is the Creative SSP that transforms digital advertising through creative technology and innovative ad formats.” Source: RevenueBase Database · checked Sep 6, 2026
16	Databeat	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 6, 2026	201-500	357 contacts →
	Indirect evidence “At DataBeat, we redefine what's possible in AdTech, simplifying AdTech complexities into actionable strategies that drive revenue.” Source: RevenueBase Database · checked Sep 6, 2026
17	Admedia	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	201-500	242 contacts →
	Indirect evidence “AdMedia helps Agencies and Brands meet their KPIs and hit their ROI objectives.” Source: RevenueBase Database · checked Sep 6, 2026
18	Mediavine	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	213 contacts →
	Indirect evidence “Mediavine powers monetization for independent publishers, delivering the technology, demand infrastructure, and revenue performance that digital businesses need to grow.” Source: RevenueBase Database · checked Sep 6, 2026
19	EZOIC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 6, 2026	201-500	207 contacts →
	Partial evidence “Ezoic is an award-winning technology platform that helps digital publishers maximize ad revenue and grow their audiences through advanced, easy-to-use solutions.” Source: RevenueBase Database · checked Sep 6, 2026
20	XANDR	Indirect evidence	New York, United StatesHQ checked Sep 6, 2026	1,001-5,000	203 contacts →
	Indirect evidence “Xandr, a part of Microsoft Advertising, powers a global marketplace for premium advertising.” Source: RevenueBase Database · checked Sep 6, 2026
21	Appodeal, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	201 contacts →
	Indirect evidence “Appodeal is a global player in ad tech and mobile publishing.” Source: RevenueBase Database · checked Sep 6, 2026
22	Townsquare Ignite	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	199 contacts →
	Partial evidence “Townsquare Ignite is a customer-centric, data-driven technology provider of cross-platform advertising solutions including programmatic, search, marketing and client services.” Source: RevenueBase Database · checked Sep 6, 2026
23	SOVRN	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 6, 2026	51-200	183 contacts →
	Indirect evidence “Sovrn is a software and data company built for the people who power the open internet.” Source: RevenueBase Database · checked Sep 6, 2026
24	Adpushup	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 6, 2026	51-200	174 contacts →
	Partial evidence “AdPushup was formed in 2014 with a simple idea: While A/B testing was becoming popular, no one was using it to optimize publisher-side ad layouts.” Source: RevenueBase Database · checked Sep 6, 2026
25	start.io	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	142 contacts →
	Strong evidence “Start.io is a sell-side omnichannel advertising platform powered by real-time mobile audiences.” Source: RevenueBase Database · checked Sep 6, 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: supply-side 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 supply-side platforms.
Partial evidence: Its own public description names part of supply-side platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name supply-side 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 567 supply-side platforms based in the United States

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Supply-side platforms based in the United States at a glance

As of Sep 6, 2026

45.9%Verified-email coverage

29.9%Mobile-number coverage

47.8Average contacts per company

11-50Median size (employees)

23.3%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

174

11-50

248

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

11,5870–30

73631–60

1061–90

590–180

85180+

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 supply-side 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 “supply-side 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 supply-side 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 supply-side 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, 12,423 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 6, 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.

Supply-side 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 supply-side 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 supply-side platforms are there based in the United States?

RevenueBase identified 567 supply-side 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?

The Trade Desk, headquartered in Ventura, tops this list with the largest team on record.

Which city has the most supply-side platforms?

New York leads with 132 headquartered companies, followed by San Francisco (25) and Miami (24).

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 12,423 verified decision-maker contacts tracked across these 567 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 6, 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.