ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIT & CommunicationAdvertising AgenciesZurichGroupM Services AG
GroupM Services AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

GroupM Services AG provides media and advertising services, offering media planning and buying, data‑driven marketing solutions, creative production and measurement and analytics capabilities.

AI-generated
Offering

Products & services

Industry:Advertising Agencies
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.2/5

GroupM Services AG

✓ Offered
3
Media planning and media buying
Media planning, media buying and media delivery across digital and traditional channels; including data-driven optimisation, targeting and measurement.
Creative, production and data solutions
Creative, production, data and commerce solutions for integrated brand communication; linked with personalised delivery of media content.
Open Intelligence
Data solution with a Large Marketing Model for predictive intelligence, to improve marketing performance and business results.
Trust & reputation

ranQ Trust Score of GroupM Services AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

GroupM Services AG scores 63.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.69.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.35.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
GroupM Services AG scores 95.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.96.07%
GroupM Services AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
GroupM Services AG scores 63.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.26.74%
Qualifications+0.00

GroupM Services AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 3 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

May 30, 2025Media
WPP Media: GroupM wird zu KI-Medienunternehmen
persoenlich.com
January 31, 2023Media
GroupM: Aus MediaCom Zürich wird EssenceMediacom
persoenlich.com

Knowledge

No knowledge articles yet

Once GroupM Services AG has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

GroupM Services AG in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank GroupM Services AG by reviews, experience and specialisations.

Is this your company?

Claim the company profile of GroupM Services AG to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Hardturmstrasse 133
8005 Zurich
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-202.827.885
Founded
2011 · 15 years
Last commercial register change
September 9, 2026
Employees
101 to 500
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    DG
    doppelrahm GmbH
    Zurich
    PM
    Publicis Media Switzerland AG
    Zurich
    AG
    A. Gallati GmbH
    Hedingen
    MG
    MashupMedia GmbH
    Zurich
    MS
    Mediaplus Suisse AG
    Zurich
    MS
    Mediakeys Swiss AG
    Glattbrugg
    OM
    Omnicom Media Group Schweiz AG
    Zurich
    MC
    Metam Communication GmbH
    Zurich