Who advertises with MediaMath?
A study of 950 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.
#17 of 19Among DSP and programmatic platforms, ahead of GroundTruth and AppLovin Axon.
6%of sites with the Yahoo DSP tag also carry the MediaMath tag, compared with 0% across the panel.
- 1,268,817
- company websites analysed
- 950
- domains with the MediaMath tag
- #17
- of 19 DSP and programmatic platforms same websites for every platform
- 60%
- headquartered in United States
Where MediaMath ranks
Share of the 468,601 sites in our tag-manager panel with each platform’s tag. MediaMath appears on 761 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 35.2× 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 DSP5.7% · 35.2×
- Viant3.4% · 21.2×
- Criteo3.2% · 20.0×
- Amazon DSP2.9% · 18.1×
- Simpli.fi2.3% · 13.9×
- The Trade Desk2.2% · 13.5×
- Xandr Invest2.0% · 12.4×
- Basis1.7% · 10.3×
- Google DV3601.6% · 10.1×
- Nextdoor Ads1.5% · 9.1×
- Quantcast1.5% · 9.1×
- StackAdapt1.4% · 8.9×
- Spotify Ads1.4% · 8.6×
- Snapchat Ads1.2% · 7.4×
- GroundTruth1.1% · 6.9×
- Beeswax1.1% · 6.5×
- AppLovin Axon0.9% · 5.8×
- Adform0.9% · 5.6×
- AdRoll0.8% · 4.8×
- Quora Ads0.7% · 4.5×
- Pinterest Ads0.6% · 3.7×
- X Ads0.6% · 3.6×
- Reddit Ads0.6% · 3.4×
- TikTok Ads0.5% · 3.3×
- LinkedIn Ads0.3% · 2.1×
- Microsoft Ads0.3% · 1.9×
- Meta Ads0.3% · 1.9×
- Feathr0.3% · 1.8×
- ChatGPT Ads (OpenAI)0.3% · 1.6×
- RTB House0.2% · 1.1×
- Google Ads0.2% · 1.0×
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 |
Unacademy unacademy.com | EdTech & E-Learning | 5,001–10,000 | India |
Valor Econômico S/A valor.globo.com | Publishing & News | 201–500 | Brazil |
Pakistan State Oil psopk.com | Oil, Gas & Mining | 1,001–5,000 | Pakistan |
Expo 2020 Dubai expo2020dubai.com | Events & Experiences | 501–1,000 | United Arab Emirates |
Savills savills.com | Real Estate (brokerage & services) | 10,001+ | United Kingdom |
Policybazaar.com policybazaar.com | Insurance & Insurtech | 10,001+ | India |
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 |
PUC Minas pucminas.br | Higher Education | 1,001–5,000 | Brazil |
Precisely precisely.com | Data & Analytics | 1,001–5,000 | United States |
Even even.com.br | Construction & Contracting | 1,001–5,000 | Brazil |
Bottomline bottomline.com | Payments & Fintech | 1,001–5,000 | United States |
Wounded Warrior Project woundedwarriorproject.org | Nonprofits & NGOs | 501–1,000 | United States |
Direcional Engenharia direcional.com.br | Construction & Contracting | 5,001–10,000 | Brazil |
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 |
Universal Orlando Resort universalorlandojobs.com | Events & Experiences | 10,001+ | United States |
Mamaearth mamaearth.in | Beauty & Personal Care | 51–200 | India |
USP usp.org | Pharmaceuticals | 1,001–5,000 | United States |
LALIGA laliga.com | Fitness, Sports & Recreation | 501–1,000 | Spain |
Hero Vired herovired.com | EdTech & E-Learning | 201–500 | India |
DAV (Disabled American Veterans) dav.org | Nonprofits & NGOs | 501–1,000 | United States |
Quatá Alimentos quataalimentos.com.br | Food & Beverage (CPG / manufacturing) | 1,001–5,000 | Brazil |
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+ | — |
Institut Curie curie.fr | Hospitals & Health Systems | 1,001–5,000 | France |
Rent The Runway renttherunway.com | Fashion & Apparel | 501–1,000 | United States |
Grupo OMINT omint.com.ar | Insurance & Insurtech | 1,001–5,000 | — |
Baptist Health careers.baptisthealth.net | Hospitals & Health Systems | 10,001+ | United States |
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 |
Pret A Manger pret.co.uk | Restaurants & Food Service | 10,001+ | United Kingdom |
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 |
Every company we've detected, filterable by sector, size and location, with the marketing leaders to contact. And it's a live list: we re-scan monthly, so you see who just added the MediaMath tag and who removed it. Book a call and we'll walk you through it.
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 950 domains among 1,268,817 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, 6% of sites with the Yahoo DSP tag also carry the MediaMath tag, against 0.2% of the full panel. Next come Viant (3%), Criteo (3%) and Amazon DSP (3%).
Which companies use MediaMath for advertising?
They include ADP, Unacademy, Valor Econômico S/A, Pakistan State Oil and Expo 2020 Dubai. The table on this page lists more.
How does MediaMath compare to other ad platforms?
Within our 468,601-site tag-manager panel, MediaMath ranks #17 of 19 DSP and programmatic platforms by detected sites — ahead of GroundTruth and 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.