Best AdTech Companies in Illinois, United States
The 47 best AdTech companies in Illinois, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: ABCS Insights.
Ranked: Best AdTech companies in Illinois
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ABCS Insights Cloud-based ad attribution analytics solutions provider | $50M | 18 mo ago | Series C | Jerome Shimizu CEO | 2020 | WordPressMySQLPHP+27 | — | 1 internship · 1 expansion |
| 2 | 4C Insights Cloud-based market intelligence solution across closed ecosystems | $32M | 118 mo ago | Acquired | — | 2011 | — | 24 patents AI-driven enterprise data analytics and classification for talent, product, and defense applications | — |
| 3 | Dotomi Marketing solutions harmonizing consumer engagement across paid, owned, and earned channels | $28M | 262 mo ago | Acquired | — | 2003 | — | 9 patents Secure identity management and collaborative user-driven data networking platforms | — |
| 4 | StreamLayer Video content management and monetization solutions provider 37Moat top 25%Patents top 33%Innovation top 34%News top 38% All 10 signals ▾Moattop 25% Patentstop 33% Innovationtop 34% Newstop 38% Talenttop 38% Fundingtop 42% Producttop 47% Techbottom 46% Globalbottom 31% Marketbottom 25% Moat: Editorial + unicorn rating 7/10 · IP moat: 24 patents Patents: 24 patents matched (strict assignee match) · 17 filings since 2022 vs 7 in 2017-21 rank vs industry peers · Fliar Intelligence Index 37/100 | $13M | 15 mo ago | Series A | John Ganschow Co-Founder | 2018 | WebflowSentryWistia+17 | 24 patents Real-time interactive video streaming with dynamic overlay graphics and audience engagement | 1 partnership |
| 5 | AdYapper Digital Advertising Optimisation | $7M | 133 mo ago | Series A | Elliot Hirsch Founder & CEO | 2013 | — | — | — |
| 6 | Tap.Me Connecting pilots and passengers for unforgettable flight experiences since 1994 | $5M | 173 mo ago | Acqui-Hired | — | 2009 | — | 18 patents Pressurized beverage container caps and dispensing hardware for tap-based drink systems | — |
| 7 | Clearstream Media buying platform focused on streaming video | $2M | 150 mo ago | Acqui-Hired | — | 2011 | — | 2 patents Online video advertising delivery and targeting system | — |
| 8 | Kixer Mobile App Recommendation Platform | $1M | 144 mo ago | Acqui-Hired | Omar Nicola Founder & President | 2014 | — | — | — |
| 9 | Adshift AI-powered marketing platform optimizing user acquisition and maximizing return on investment | $650K | 125 mo ago | Deadpooled | — | 2011 | — | — | — |
Top 11 AdTech companies in Illinois
#1
Series C · Chicago, Illinois · founded 2020 · 17 employees$50Mraised▾
Cloud-based ad attribution analytics solutions provider. The platform offers an omnichannel view of ROAS, by understanding campaign impact on customers, purchases & others. The generated insights help businesses in optimizing campaigns, and sales.
- Feb 2025Series C$50M
#2
Series A · Chicago, Illinois · founded 2018 · 20 employees$12.8Mraised▾
Video content management and monetization solutions provider. It offers technology solutions for video content and video monetization. It offers an audience engagement platform focused on streaming video that provides engagement between viewers, premium rights holders, and sponsors.
- May 2025Series A$1.8M
- May 2025Conventional Debt—
- Oct 2024Conventional Debt—
- Oct 2024Series A$756K
#3
Acquired · Chicago, Illinois · founded 2011 · 282 employees$31.6Mraised▾
4C Insights offers a cloud-based market intelligence solution across closed ecosystems. The company offers a technology that turns social data into actionable marketing intelligence. It is a hosted platform, which provides a SaaS application interface, requiring no infrastructure for its customers. The solution serves linear television, streaming video, digital commerce, and social media.
- Sep 2016Series C$26M
- Feb 2015Conventional Debt—
- Jan 2014Series B$5M
- Sep 2012Seed$650K
#4
Acquired · Chicago, Illinois · founded 2003 · 160 employees$27.5Mraised▾
Marketing solutions harmonizing consumer engagement across paid, owned, and earned channels. The company empowers marketers with the ability to create personalized experiences for each individual at scale. It provides a comprehensive view of potential buyers, enabling marketers to understand who they are, what they care about, and what they buy. With its solutions, marketers know what to say, when, where, how often, and how much to spend to engage any individual. The company enables marketers to connect media to the consumers that matter most to them, harmonizing engagement across paid, owned, and earned channels. It offers customer clean room, data services, messaging, loyalty, digital, retail media, and website solutions. The company helps identify high-value customers and stay with them. It unifies and cleanses first-party data and connects messages across email and digital media. The company offers cloud based platform, peoplecloud products, and solutions for various industries.
- Sep 2004Series A$10.5M
- Series A$17M
#5
Series A · Chicago, Illinois · founded 2013 · 1 employees$6.7Mraised▾
AdYapper optimizes the digital advertising efforts and generates real-time analytics across the entire ad buying ecosystem and centralize the data into one platform to identify wasted ad spend while providing direction on how best to reallocate the recovered ad spend to make in-flight campaign decisions. AdYapper makes advertising performance data actionable so advertisers can optimize, and increase the efficacy of, their ad buys. Headquartered in Chicago, AdYapper is backed by startup accelerator Techstars and KGC Capital.
- Jul 2015Series A$4.5M
- May 2014Seed$1M
- Sep 2013Seed$1.2M
#6
Acqui-Hired · Chicago, Illinois · founded 2009 · 12 employees$5.4Mraised▾
Connecting pilots and passengers for unforgettable flight experiences since 1994. It is an online platform that facilitates booking scenic flights and day trips with licensed pilots. With a wide selection of flight offerings, users can search for flights based on location and preferences. The platform connects individuals with vetted private and commercial pilots, ensuring safety and a personalized experience. It offers gift vouchers for various amounts, redeemable for any flight on the site. The booking process involves searching for a flight, selecting a date and time, and coordinating directly with the pilot after confirmation. The platform caters to both individual adventurers and groups seeking custom flight experiences. It also provides an opportunity for pilots to share their passion for flying and offset flight costs by connecting with passengers. The website offers pilot registration, login, search, cart, and secure payment options.
- Mar 2012Series C$3.2M
- Dec 2011Series B$423.9K
- May 2011Series B$1.5M
- Sep 2010Series A$325K
#7
Acqui-Hired · Chicago, Illinois · founded 2011 · 28 employees$1.5Mraised▾
Clearstream operates video advertising platform that provides advertisers and agencies to access ad inventory across various websites. Clearstream addresses the problem of accountability and transparency in tracking the placement of online video ads. Clearstream provides standardization with evaluation, auditing and reporting of video environments, including premium in-stream, in-banner, in-game, auto-play and below-fold placements. Also evaluates in-stream content for quality and contextual mapping. Clearstream partnered with pointroll, adtricity, vindico, Nielsen, Doubleclick, Sizmek among many others.
- Jan 2014Series A$1.5M
- Dec 2011Conventional Debt$100K
#8
Acqui-Hired · Toluca, Illinois · founded 2014 · 6 employees$1Mraised▾
Kixer is a mobile native advertising company which helps mobile developers generate revenue. The service charges customers based on the number of application installations rather than the rate of impressions or clicks. The customers include IGN, TMZ and E!Online to name a few.
- Jul 2014Seed$1M
#9
Deadpooled · Chicago, Illinois · founded 2011 · 14 employees$650Kraised▾
AI-powered marketing platform optimizing user acquisition and maximizing return on investment. It is a B2B SaaS platform that leverages real-time user behavior and predictive algorithms to drive measurable growth for mobile app marketing. The platform offers performance insights, attribution engine, fraud prevention, and user journey optimization. It empowers marketers to track and analyze ad performance, understand conversion sources, ensure user quality, and seamlessly integrate with ad tech partners. The platform enables data-driven decisions through deep commerce data and AI, providing real-time analytics to monitor campaign results and optimize strategies. It offers marketing measurement and ROI optimization, fraud prevention and ad spend protection, user journey and retention optimization, and omnichannel and partner data integration. The platform provides solutions for marketing, data & analytics, fraud prevention, incrementality, and deep linking. Capabilities include regaining iOS visibility, kickstarting app growth, increasing engagement, and maximizing ROAS.
- Feb 2016Seed$650K
#10
Deadpooled · Chicago, Illinois · founded 2010 · 3 employees—raised▾
Education Funding Partners provides an ad network to connect educational organizations and advertisers. Offers EFP adNet which helps the clients to find relevant, education-friendly ads from vetted national and local companies to generate revenue from their digital communication assets. Puts the power of national brand marketing resources to work for public education by linking selected brands and school districts.
- Sep 2016Seed—
#11
Seed · Chicago, Illinois · founded 2013 · 3 employees—raised▾
Operator of an online digital advertising platform intended to create a responsive banner. The company's platform provides advertising campaigns for users that can be run on different devices, enabling advertisers to automatically optimize ads that are contextually relevant for the ad space, device and market without creating and managing multiple ads for the same message.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of AdTech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising