Company lists · Data verified August 2026

Top 25 Advertising technology platforms based in the United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 2,430 companies tracked

There are 2,430 advertising technology platforms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 82,567 professional contacts across them, including 34,662 with verified work emails and 27,094 with mobile numbers. New York is the largest hub.

This list covers advertising technology 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. Data current as of August 28, 2026.

2,430Companies

82,567Contacts tracked

34,662Verified emails

27,094Mobile numbers

Unlock all 2,430 companies Free account · no credit card · 2 minutes

The 25 largest advertising technology platforms based in the United States

Ranked by team size

Top 25 of 2,430 advertising technology platforms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Epsilon	West Chicago, IL	5,001-10,000	9,983	4,221
2	The Trade Desk	Boston, MA	1,001-5,000	4,241	2,971
3	Zeta Global	Nashville, TN	1,001-5,000	2,570	1,644
4	Clear Channel Outdoor	New York, NY	1,001-5,000	2,453	1
5	Taboola	New York, NY	1,001-5,000	1,978	417
6	TEADS	New York, NY	1,001-5,000	1,794	965
7	RTB House	San Francisco, CA	1,001-5,000	1,339	1,008
8	Inmobi Advertising	New York	1,001-5,000	1,320	488
9	Pubmatic	Redwood City, CA	501-1,000	1,285	946
10	Samsung ADS	New York, NY	501-1,000	988	277
11	XR Extreme Reach	Burbank, CA	1,001-5,000	964	443
12	BASIS	Chicago, IL	501-1,000	886	563
13	DT	Arlington, VA	501-1,000	751	455
14	simpli.fi	Fort Worth, TX	501-1,000	677	470
15	Nexxen	New York, NY	501-1,000	666	514
16	Innovid	Chicago, IL	501-1,000	640	430
17	Perion	New York, NY	501-1,000	613	355
18	MGID	Los Angeles, CA	501-1,000	571	225
19	SKAI	San Francisco, CA	501-1,000	565	407
20	Quantcast	Seattle, WA	501-1,000	496	282
21	Billups	Nashville, TN	501-1,000	439	263
22	Outfront Media	New York, NY	1,001-5,000	336	159
23	Madhive	New York, NY	501-1,000	299	198
24	Optimum Media	New York	501-1,000	288	139
25	XANDR	New York	1,001-5,000	207	52

Showing 25 of 2,430 advertising technology platforms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 34,662 reachable decision-makers.

Free account · no credit card

See all 2,430 companies

Advertising technology platforms based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 433 HQs

27,094Contacts with mobile numbers

236Emails re-verified in last 30 days

Companies by employee count

1-10

985

11-50

940

51-200

344

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Advertising technology platforms by metro

Metro	Companies
Advertising technology platforms in New York	433
Advertising technology platforms in San Francisco	140
Advertising technology platforms in Los Angeles	109
Advertising technology platforms in Miami	78
Advertising technology platforms in Chicago	53
Advertising technology platforms in Austin	43
Advertising technology platforms in Denver	41

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “advertising technology platforms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 236 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 2,430 advertising technology platforms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Epsilon, headquartered in West Chicago, tops this list with the largest team on record.

Which city has the most advertising technology platforms?

New York leads with 433 headquartered companies, followed by San Francisco (140) and Los Angeles (109).

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 34,662 verified decision-maker contacts tracked across these 2,430 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,430 advertising technology platforms based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Advertising technology platforms by geography

Browse the directory

Browse: Companies home · All United States lists · All Advertising technology platforms lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.