Company lists · Data refreshed September 2026

Top 25 B2B advertising platforms based in Chicago, United States

Name: B2B advertising platforms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 88 companies tracked

RevenueBase identified 88 B2B advertising platforms headquartered in Chicago, United States as of September 2026 and tracks 2,510 professional contacts across them, including 1,306 with verified work emails. New York is the largest hub.

This list covers B2B advertising platforms headquartered in Chicago, 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 27, 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 27, 2026 86% judged on-target in blind review

88Companies

2,510Contacts tracked

1,306Verified emails

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The 25 largest B2B advertising platforms based in Chicago, United States

Ranked by team size

Top 25 of 88 B2B advertising platforms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to B2B 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	BASIS	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	891 contacts →
	Partial evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 27, 2026
2	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 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 27, 2026
3	Walker Sands	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	199 contacts →
	Partial evidence “Walker Sands is an integrated B2B growth services agency with expertise in strategy, data, content, creative, strategic communications, digital marketing and RevOps.” Source: RevenueBase Database · checked Sep 27, 2026
4	Strike Social	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	161 contacts →
	Partial evidence “Strike Social’s machine learning technology is an end-to-end YouTube, Meta, TikTok, and all-biddable social execution platform built to generate savings for agencies and deliver…” Source: RevenueBase Database · checked Sep 27, 2026
5	Almoh Media	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	140 contacts →
	Partial evidence “We are Almoh Media, a fully integrated B2B marketing agency specializing in lead generation, account-based marketing, demand generation, digital marketing, account management, and…” Source: RevenueBase Database · checked Sep 27, 2026
6	DOE Media	Strong evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	85 contacts →
	Strong evidence “DOE Media is a leading independently owned and operated data-driven direct response advertising platform providing sophisticated solutions to partners ranging from startups to…” Source: RevenueBase Database · checked Sep 27, 2026
7	Envisionit	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	69 contacts →
	Indirect evidence “Envisionit is an award-winning, full-service digital marketing agency headquartered in Chicago with in-house Media, Creative, Tech, Strategy and Analytics teams.” Source: RevenueBase Database · checked Sep 27, 2026
8	Demandworks	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	51 contacts →
	Partial evidence “DemandWorks is a B2B demand generation partner that helps technology, SaaS, and enterprise brands reach, engage, and convert the buying committees that matter most.” Source: RevenueBase Database · checked Sep 27, 2026
9	Marcel Digital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	50 contacts →
	Partial evidence “Marcel Digital is a premier B2B digital marketing and web development agency purpose-built to drive measurable growth, deeper insight, and transformative digital experiences for…” Source: RevenueBase Database · checked Sep 27, 2026
10	I-Prowess	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	24 contacts →
	Indirect evidence “Since 2016, we’ve been your trusted partner in cutting-edge digital marketing and performance-driven success.” Source: RevenueBase Database · checked Sep 27, 2026
11	Losasso Integrated Marketing	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Complex B2B is our comfort zone.” Source: RevenueBase Database · checked Sep 27, 2026
12	Perfect Search Media	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	19 contacts →
	Indirect evidence “Perfect Search Media is a top-rated, Chicago-based digital marketing agency.” Source: RevenueBase Database · checked Sep 27, 2026
13	Accuen	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	18 contacts →
	Partial evidence “Accuen is Omnicom Media Group’s programmatic agency, operating the industry’s first open and flexible platform for programmatic media buying for the world's leading marketers.” Source: RevenueBase Database · checked Sep 27, 2026
14	Next Click Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	17 contacts →
	Partial evidence “We are an advertising technology company based in Chicago.” Source: RevenueBase Database · checked Sep 27, 2026
15	Symmetri Marketing Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	17 contacts →
	Indirect evidence “Symmetri Marketing Group has joined Yes & , an independent, fully-integrated creative agency designed to redefine what’s possible.” Source: RevenueBase Database · checked Sep 27, 2026
16	Xamtac Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	15 contacts →
	Partial evidence “Digital Marketing Agency that takes a scientific approach to -Digital Marketing -Paid Ad Platforms -Marketing Creatives -Landing Pages -Email/SMS Campaigns & Automated Flows…” Source: RevenueBase Database · checked Sep 27, 2026
17	Hippo Media	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	12 contacts →
	Partial evidence “Hippo Media is a digital media company specializing in video production, content creation, and targeted advertising.” Source: RevenueBase Database · checked Sep 27, 2026
18	Visualfizz	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	11 contacts →
	Partial evidence “We are VisualFizz, a Chicago-based marketing and branding agency built for B2B growth.” Source: RevenueBase Database · checked Sep 27, 2026
19	MBUY	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	9 contacts →
	Indirect evidence “MBuy is the leading everychannel media partner.” Source: RevenueBase Database · checked Sep 27, 2026
20	Allied Digital Strategies	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	8 contacts →
	Partial evidence “Integrated Search Solutions \| Cross-Platform Social Solutions \| E-Commerce Campaign Solutions Allied Digital Strategies connects agencies and brands with the industry’s leading…” Source: RevenueBase Database · checked Sep 27, 2026
21	Team Odea	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	8 contacts →
	Indirect evidence “Be curious.” Source: RevenueBase Database · checked Sep 27, 2026
22	Supplemental Oxygen Digital	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	7 contacts →
	Indirect evidence “sO2 Digital is an ROI driven, industry leading team of digital thought leaders guiding our partners on their climb to optimized workflow, best in class products and services, and…” Source: RevenueBase Database · checked Sep 27, 2026
23	Channel Clarity	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	7 contacts →
	Partial evidence “Channel Clarity is a Chicago-based advertising technology company.” Source: RevenueBase Database · checked Sep 27, 2026
24	RED Gobo	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	7 contacts →
	Indirect evidence “Red Gobo leverages proprietary search marketing data to pinpoint user interests and intent across CTV, OLV, DOOH and Display.” Source: RevenueBase Database · checked Sep 27, 2026
25	Varro Media	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	6 contacts →
	Indirect evidence “Varro Media is an NMSDC-certified business dedicated to helping brands and agencies reach their full potential through innovative and effective marketing strategies.” Source: RevenueBase Database · checked Sep 27, 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: B2B 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 B2B advertising platforms.
Partial evidence: Its own public description names part of B2B advertising platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B 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 88 B2B advertising platforms based in Chicago, United States

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B2B advertising platforms based in Chicago, United States at a glance

As of Sep 27, 2026

52.0%Verified-email coverage

28.5Average contacts per company

1-10Median size (employees)

379.5%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 88 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 B2B 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 Chicago, United States whose own description of what they do matches “B2B 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 B2B 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 B2B advertising platforms, and records with no verified work email. Companies headquartered outside Chicago 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, 1,306 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 27, 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.

B2B advertising platforms by metro in the United States

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 B2B 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 B2B advertising platforms are there based in Chicago, United States?

RevenueBase identified 88 B2B advertising platforms headquartered in Chicago, 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?

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

Which city has the most B2B advertising platforms?

New York leads with 334 headquartered companies, followed by Los Angeles (142) and San Francisco (114).

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 1,306 verified decision-maker contacts tracked across these 88 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 27, 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.