Who advertises with MediaMath?
A study of 425 company websites with the MediaMath tag. We look at who they are, the other advertising platforms they use, and how they break down by sector, size and geography.
An observed sample, not a global advertiser count. Tag installation indicates measurement setup; it does not establish active spending.
#18 of 19Among DSP and programmatic platforms, ahead of AppLovin Axon.
4%of sites with the Yahoo DSP tag also carry the MediaMath tag, compared with 0% across the panel.
- 1,008,359
- company websites analysed
- 425
- domains with the MediaMath tag
- #18
- of 19 DSP and programmatic platforms same websites for every platform
- 75%
- headquartered in United States
Where MediaMath ranks
Share of the 134,794 sites in our tag-manager panel with each platform’s tag. MediaMath appears on 323 of these sites. Snapshot: 1 Nov 2026.
Who advertises with MediaMath
The companies we could match to detected domains. Each breakdown uses profiles with a known value for that field. Sector and business-model categories can overlap.
Which advertising audiences overlap most?
Sites with the Yahoo DSP tag are 18.4× as likely to carry the MediaMath tag as the average site in our panel. This is a snapshot of overlap, not a measure of adoption speed.
- Yahoo DSP4.4% · 18.4×
- Viant2.8% · 11.8×
- Simpli.fi2.5% · 10.6×
- Basis2.5% · 10.4×
- The Trade Desk2.3% · 9.8×
- Xandr Invest2.1% · 8.8×
- Spotify Ads2.0% · 8.5×
- Amazon DSP2.0% · 8.5×
- Criteo2.0% · 8.3×
- Snapchat Ads2.0% · 8.3×
- Quantcast1.8% · 7.3×
- Google DV3601.7% · 7.3×
- StackAdapt1.6% · 6.7×
- GroundTruth1.6% · 6.5×
- Nextdoor Ads1.4% · 6.0×
- AdRoll1.1% · 4.8×
- Beeswax1.1% · 4.7×
- Quora Ads1.0% · 4.0×
- Adform1.0% · 4.0×
- TikTok Ads0.8% · 3.5×
- Reddit Ads0.7% · 3.0×
- Pinterest Ads0.7% · 3.0×
- AppLovin Axon0.6% · 2.6×
- X Ads0.6% · 2.5×
- Meta Ads0.4% · 1.8×
- Microsoft Ads0.4% · 1.8×
- LinkedIn Ads0.4% · 1.7×
- ChatGPT Ads (OpenAI)0.3% · 1.4×
- RTB House0.3% · 1.2×
- Google Ads0.3% · 1.1×
The companies behind the tags
40 matched company profiles, ordered by LinkedIn following. Inclusion indicates a detected tag, not a confirmed active campaign.
| Company | Industry | Size | HQ |
|---|---|---|---|
ADP adp.com | HR, Staffing & Recruiting | 10,001+ | United States |
Valor Econômico S/A valor.globo.com | Publishing & News | 201–500 | Brazil |
Expo 2020 Dubai expo2020dubai.com | Events & Experiences | 501–1,000 | United Arab Emirates |
Iberia iberia.com | Passenger Transport & Mobility | 10,001+ | Spain |
University of Colorado Boulder colorado.edu | K-12 & Higher Education | 5,001–10,000 | United States |
Precisely precisely.com | Data & Analytics | 1,001–5,000 | United States |
Wounded Warrior Project woundedwarriorproject.org | Nonprofits & NGOs | 501–1,000 | United States |
University at Buffalo buffalo.edu | K-12 & Higher Education | 5,001–10,000 | United States |
National Wildlife Federation nwf.org | Nonprofits & NGOs | 201–500 | United States |
USP usp.org | Pharmaceuticals | 1,001–5,000 | United States |
LALIGA laliga.com | Fitness, Sports & Recreation | 501–1,000 | Spain |
DAV (Disabled American Veterans) dav.org | Nonprofits & NGOs | 501–1,000 | United States |
Square Enix square-enix-games.com | Gaming & Esports | 1,001–5,000 | United Kingdom |
Brunel University of London brunel.ac.uk | Higher Education | 1,001–5,000 | United Kingdom |
NCR Voyix ncrvoyix.com | Payments & Fintech | 10,001+ | — |
Grupo OMINT omint.com.ar | Insurance & Insurtech | 1,001–5,000 | — |
University of Staffordshire staffs.ac.uk | Higher Education | 1,001–5,000 | United Kingdom |
SOAS University of London soas.ac.uk | K-12 & Higher Education | 501–1,000 | United Kingdom |
Inova Health inova.org | Hospitals & Health Systems | 10,001+ | United States |
Boys & Girls Clubs of America bgca.org | Nonprofits & NGOs | 501–1,000 | United States |
University of Bradford bradford.ac.uk | Higher Education | 1,001–5,000 | United Kingdom |
Australian Catholic University acu.edu.au | K-12 & Higher Education | 1,001–5,000 | Australia |
Cardiff Metropolitan University cardiffmet.ac.uk | Higher Education | 1,001–5,000 | United Kingdom |
Allbirds allbirds.com | Fashion & Apparel | 201–500 | United States |
Groupama groupama-gan-recrute.com | Insurance & Insurtech | 10,001+ | France |
CenterPoint Energy centerpointenergy.com | Utilities & Power | 5,001–10,000 | United States |
Onedio.com onedio.com | Internet Media & Social Platforms | 51–200 | Türkiye |
Patterson Dental pattersondental.com | Medical Devices & Diagnostics | 1,001–5,000 | United States |
ZestMoney zestmoney.in | Lending & Credit | 501–1,000 | India |
Workhuman workhuman.com | HR, Staffing & Recruiting | 1,001–5,000 | United States |
DTE Energy dteenergy.com | Utilities & Power | 10,001+ | United States |
Oceana oceana.org | Nonprofits & NGOs | 201–500 | — |
Graybar graybar.com | Electrical & Electronics Manufacturing | 5,001–10,000 | United States |
Defenders of Wildlife defenders.org | Nonprofits & NGOs | 51–200 | United States |
Cuyahoga Community College tri-c.edu | K-12 & Higher Education | 1,001–5,000 | United States |
Hill Group UK hill.co.uk | Construction & Contracting | 501–1,000 | United Kingdom |
Good Apple goodapple.com | Advertising & Media Agencies | 51–200 | United States |
Mazars in the UK mazars.co.uk | Accounting & Tax | 1,001–5,000 | United Kingdom |
LBC Express, Inc. lbcexpress.com | Freight, Trucking & Logistics | 5,001–10,000 | Philippines |
Frette frette.com | Home, Furniture & Décor | 201–500 | Italy |
Find relevant companies by sector, size and location, then identify the marketing leaders to contact. We can walk you through the available records.
Book a call →company_tech on gtm.dev →How to check a site for the MediaMath tag
- Open the site in Chrome and open DevTools (⌥⌘I on Mac, Ctrl+Shift+I on Windows), then the Network tab.
- Reload and filter for pixel.mathtag.com. A request to it means the tag is live on that page.
- Not there? It may only fire on conversion pages, or sit inside Google Tag Manager. Search the container’s tags (or the gtm.js response) for pixel.mathtag.com.
MediaMath advertisers: common questions
Is this the total number of MediaMath advertisers?
No. We detected the MediaMath tag on 425 domains among 1,008,359 company websites analysed. This is an observed sample of companies and startups, not an estimate of the platform's whole advertiser base.
Which advertisers are most likely to also use MediaMath?
In our comparison panel, 4% of sites with the Yahoo DSP tag also carry the MediaMath tag, against 0.2% of the full panel. Next come Viant (3%), Simpli.fi (3%) and Basis (2%).
Which companies use MediaMath for advertising?
They include ADP, Valor Econômico S/A, Expo 2020 Dubai, Iberia and University of Colorado Boulder. The table on this page lists more.
How does MediaMath compare to other ad platforms?
Within our 134,794-site tag-manager panel, MediaMath ranks #18 of 19 DSP and programmatic platforms by detected sites — ahead of AppLovin Axon, behind Google DV360, The Trade Desk, StackAdapt, AdRoll and Simpli.fi.
What is pixel.mathtag.com?
It serves event pixel — the tag advertisers add so MediaMath can measure ad clicks and conversions on their own site. Its presence means a site has set up MediaMath measurement; it does not tell you how much, or whether, they are currently spending.
How can I check if a website has the MediaMath tag?
Open the site in Chrome, open DevTools → Network, reload, and filter for "pixel.mathtag.com". A request to it means the tag is live on that page. If the site uses Google Tag Manager, the tag can also sit inside the container and fire only on certain pages.
More advertiser studies
Put the research to work
Selling to MediaMath advertisers — as a platform, agency or ad-tech vendor? Talk to us about finding the companies and marketing teams that fit your business.