Company lists · Data refreshed September 2026

Top 25 Supply side platform agencies worldwide

Name: Supply side platform agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 2,418 companies tracked

RevenueBase identified 2,418 supply side platform agencies worldwide as of September 2026 and tracks 58,174 professional contacts across them, including 22,990 with verified work emails and 9,742 with mobile numbers. The United States is the largest market and New York the largest hub.

This list covers supply side platform agencies worldwide, 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. Country and city lists for supply side platform agencies follow the table.

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

2,418Companies

58,174Contacts tracked

22,990Verified emails

9,742Mobile numbers

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The 25 largest supply side platform agencies worldwide

Ranked by team size

Top 25 of 2,418 supply side platform agencies worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to supply side platform agencies: 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	media.net	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 6, 2026	1,001-5,000	2,011 contacts →
	Partial evidence “Media.net is an independent advertising technology platform that helps publishers, advertisers, and agencies achieve measurable outcomes across all formats and mediums.” Source: RevenueBase Database · checked Sep 6, 2026
3	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
4	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
5	Inmobi Advertising	Partial evidence	Bangalore, IndiaHQ checked Sep 6, 2026	1,001-5,000	1,311 contacts →
	Partial evidence “InMobi Advertising is a leading global programmatic platform specializing in mobile-first solutions that drive customer growth.” Source: RevenueBase Database · checked Sep 6, 2026
6	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
7	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
8	Mediaocean	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,050 contacts →
	Indirect evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 6, 2026
9	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
10	Azerion	Partial evidence	Schiphol-rijk, GermanyHQ checked Sep 6, 2026	1,001-5,000	808 contacts →
	Partial evidence “Founded in 2014, Azerion (EURONEXT: AZRN) is one of Europe’s largest digital advertising and entertainment media platforms.” Source: RevenueBase Database · checked Sep 6, 2026
11	Tradedoubler	Indirect evidence	Stockholm, SwedenHQ checked Sep 6, 2026	201-500	770 contacts →
	Indirect evidence “We empower a thriving partner network where everyone wins.” Source: RevenueBase Database · checked Sep 6, 2026
12	Equativ	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	705 contacts →
	Partial evidence “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Source: RevenueBase Database · checked Sep 6, 2026
13	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
14	Index Exchange	Strong evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	501-1,000	671 contacts →
	Strong evidence “Index Exchange is a global advertising supply-side platform enabling media owners to maximize the value of their content on any screen.” Source: RevenueBase Database · checked Sep 6, 2026
15	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
16	Perion	Indirect evidence	New York, United StatesHQ checked Sep 6, 2026	501-1,000	621 contacts →
	Indirect 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 6, 2026
17	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
18	Operative	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	532 contacts →
	Indirect evidence “With $8.5B in digital ad revenue and $40B in global TV ad revenue flowing through the systems, Operative plays a crucial role in helping the world’s top media companies and…” Source: RevenueBase Database · checked Sep 6, 2026
19	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
20	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
21	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
22	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
23	BIG ADS	Partial evidence	Sydney, AustraliaHQ checked Sep 6, 2026	n/a	409 contacts →
	Partial evidence “Big Ads has been providing digital ad-tech solutions for 3 years with great success thanks to the release of Buddy, an ad-tech platform which produces rich media creative tags to…” Source: RevenueBase Database · checked Sep 6, 2026
24	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
25	Arabyads	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 6, 2026	201-500	393 contacts →
	Indirect evidence “ArabyAds is an ad-tech company that empowers ecommerce marketing.” 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 platform agencies. 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 platform agencies.
Partial evidence: Its own public description names part of supply side platform agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name supply side platform agencies. 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 2,418 supply side platform agencies worldwide

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Supply side platform agencies worldwide at a glance

As of Sep 6, 2026

39.5%Verified-email coverage

16.7%Mobile-number coverage

24.1Average contacts per company

11-50Median size (employees)

6.0%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

883

11-50

1,104

51-200

306

201-500

501-1,000

1,001-5,000

5,001-10,000

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 supply side platform agencies, 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.
Coverage: 24 countries, largest first: the United States, India, the United Kingdom, Israel, the United Arab Emirates, Hong Kong, Germany, Türkiye, Australia, Canada and 14 more. Country and city lists for supply side platform agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “supply side platform agencies”. 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 platform agencies), 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 platform agencies, and records with no verified work email.
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, 22,990 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 between September 6, 2026 and September 14, 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 platform agencies by location

41 lists · largest first

Every Supply side platform agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 platform agencies, 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 platform agencies are there worldwide?

RevenueBase identified 2,418 supply side platform agencies worldwide 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 country has the most supply side platform agencies?

The United States leads with 641 companies, followed by India (500) and the United Kingdom (139). Every supply side platform agencies list by country and city is linked on this page.

Which city has the most supply side platform agencies?

New York leads with 144 headquartered companies, followed by London (99) and Dubai (81).

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 22,990 verified decision-maker contacts tracked across these 2,418 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 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.