Company lists · Data refreshed September 2026

Top 25 Supply side platform agencies based in New York, United States

Name: Supply side platform agencies based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 144 companies tracked

RevenueBase identified 144 supply side platform agencies headquartered in New York, United States as of September 2026 and tracks 14,321 professional contacts across them, including 6,061 with verified work emails. New York is the largest hub.

This list covers supply side platform agencies headquartered in New York, 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

144Companies

14,321Contacts tracked

6,061Verified emails

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The 25 largest supply side platform agencies based in New York, United States

Ranked by team size

Top 25 of 144 supply side platform agencies based in New York, 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 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	Taboola	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,979 contacts →
	“Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Source: company website · checked Sep 6, 2026
2	TEADS	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,789 contacts →
	“Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Source: company website · checked Sep 6, 2026
3	Freewheel	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,273 contacts →
	“FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.” Source: company website · checked Sep 6, 2026
4	Mediaocean	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,050 contacts →
	“Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: company website · checked Sep 6, 2026
5	Nexxen	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	673 contacts →
	“Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: company website · checked Sep 6, 2026
6	Innovid	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	640 contacts →
	“Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.” Source: company website · checked Sep 6, 2026
7	Operative	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	532 contacts →
	“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: company website · checked Sep 6, 2026
8	Raptive	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	525 contacts →
	“Raptive provides higher revenue through superior ad tech, expert strategy, and best-in-class support.” Source: company website · checked Sep 6, 2026
9	VERVE	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	501-1,000	436 contacts →
	“Verve is a global leading advertising technology company, connecting advertisers seeking to buy digital ad space with publishers monetizing their content.” Source: company website · checked Sep 6, 2026
10	Triplelift	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	402 contacts →
	“TripleLift is the Creative SSP that transforms digital advertising through creative technology and innovative ad formats.” Source: company website · checked Sep 6, 2026
11	Wideorbit	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	392 contacts →
	“Founded in WideOrbit helps media companies do more business by making it easier to sell advertising.” Source: company website · checked Sep 6, 2026
12	Mediavine	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	213 contacts →
	“Mediavine powers monetization for independent publishers, delivering the technology, demand infrastructure, and revenue performance that digital businesses need to grow.” Source: company website · checked Sep 6, 2026
13	XANDR	Indirect evidence	New York, United StatesHQ checked Sep 6, 2026	1,001-5,000	203 contacts →
	“Xandr, a part of Microsoft Advertising, powers a global marketplace for premium advertising.” Source: company website · checked Sep 6, 2026
14	Townsquare Ignite	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	199 contacts →
	“Townsquare Ignite is a customer-centric, data-driven technology provider of cross-platform advertising solutions including programmatic, search, marketing and client services.” Source: company website · checked Sep 6, 2026
15	start.io	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	142 contacts →
	“Start.io is a sell-side omnichannel advertising platform powered by real-time mobile audiences.” Source: company website · checked Sep 6, 2026
16	Sizmek By Amazon	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	139 contacts →
	“Sizmek by Amazon provides advertisers and agencies with solutions to create, distribute, measure, and optimize their messaging.” Source: company website · checked Sep 6, 2026
17	Clinch	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	125 contacts →
	“Clinch is an AI-powered advertising technology company that enables brands and agencies to deliver relevant advertising across all channels more efficiently and effectively.” Source: company website · checked Sep 6, 2026
18	Byyd Mobile Advertising Platform	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	120 contacts →
	“BYYD is the mobile advertising platform for real-time bidding on mobile inventory.” Source: company website · checked Sep 6, 2026
19	Danads	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	201-500	109 contacts →
	“DanAds is the leading global SaaS company empowering businesses of all sizes with an intuitive, scalable, and automated self-service advertising platform that uses AI and machine…” Source: company website · checked Sep 6, 2026
20	Boostr	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	11-50	77 contacts →
	“boostr helps companies gain the unified visibility necessary to effectively manage, maximize and scale omnichannel ad revenue profitability with user-friendly workflows…” Source: company website · checked Sep 6, 2026
21	Next Millennium Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	11-50	66 contacts →
	“We are redefining programmatic advertising by bridging the gap between advertisers and publishers with exclusive, high-impact ad formats unavailable on the open exchange.” Source: company website · checked Sep 6, 2026
22	Placements AI	Partial evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	59 contacts →
	“Placements.io is the #1 omnichannel management platform for both sellers and buyers of digital advertising.” Source: company website · checked Sep 6, 2026
23	Adwanted Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	51 contacts →
	“Everything we do simplifies the way advertising works.” Source: company website · checked Sep 6, 2026
24	Union Square Media Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	51-200	46 contacts →
	“Union Square Media is a leading digital advertising agency.” Source: company website · checked Sep 6, 2026
25	Aditude	Partial evidence	New York, United StatesHQ checked Sep 6, 2026	51-200	45 contacts →
	“Aditude is the unified ad tech platform that empowers app and web based publishers to maximize revenue, on any inventory, with complete control over their monetization strategy.” Source: company website · 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 144 supply side platform agencies based in New York, United States

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Supply side platform agencies based in New York, United States at a glance

As of Sep 6, 2026

42.3%Verified-email coverage

99.5Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 144 companies.

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.
What qualifies: Companies headquartered in New York, United States 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. Companies headquartered outside New York 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, 6,061 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 platform agencies by metro in the United States

Supply side platform agencies in New York144
Supply side platform agencies in Miami29
Supply side platform agencies in Los Angeles28
Supply side platform agencies in San Francisco28

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 based in New York, United States?

RevenueBase identified 144 supply side platform agencies headquartered in New York, 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?

Taboola, headquartered in New York, tops this list with the largest team on record.

Which city has the most supply side platform agencies?

New York leads with 144 headquartered companies, followed by Miami (29) and Los Angeles (28).

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 6,061 verified decision-maker contacts tracked across these 144 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.