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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesZurichDiethelm Keller Holding AG
Diethelm Keller Holding AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Diethelm Keller Holding AG is a family-owned company and an active long-term investor that holds and manages a portfolio of brands and investments across premium and household goods, BBQ, industrial activities, strategic investments and real estate.

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Products & services

Industry:Holding Companies
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Diethelm Keller Holding AG

✓ Offered2
Strategic holdings
Long-term strategic holdings in selected companies, including as an anchor shareholder of DKSH Holding Ltd. and with a significant minority interest in Bergos.
Real estate management
Management of the group’s real estate activities as a distinct asset class, with a portfolio held long-term in Switzerland and selected international markets.
Trust & reputation

ranQ Trust Score of Diethelm Keller Holding AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

Diethelm Keller Holding AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Diethelm Keller Holding AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.70.07%
Diethelm Keller Holding AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Diethelm Keller Holding AG scores 68.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.77.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.60.04%
Qualifications+0.00

Diethelm Keller Holding AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, so the score is backed by part of the criteria. As of October 2026.

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

Press

Media

November 6, 2023Media
Schweizer Grill-Europameister wird German
insideparadeplatz.ch
February 4, 2022Media
Tourasia-Roemer übernimmt Diethelm Travel komplett
abouttravel.ch
December 2, 2020Media
Das hat Diethelm Keller mit seiner Reisesparte vor
abouttravel.ch
November 27, 2020Media
Globetrotter gehört nicht mehr zur DK Travel Holding
travelnews.ch
September 30, 2020Media
STA Travel : «Einen geordneten Konkurs gibt es leider nicht»
travelnews.ch
September 29, 2020Media
Konzept lag bereits vor Jahren vor: STA Travel hat Verkauf verpasst
bilanz.ch
July 13, 2020Media
«Ich täusche mich laufend, ich korrigiere mich laufend, ich lerne laufend: Das ist Management by Failure»
nzz.ch
May 31, 2019Media
Vielfältige Interessen der Diethelm Keller Group
nzz.ch

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Location

Mühlebachstrasse 20
8008 Zurich

At a glance

Legal form
Corporation
UID
CHE-107.903.346
Founded
1969 · 57 years
Last commercial register change
June 4, 2026
Employees
11 to 20
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

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