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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryFinance & InsuranceAsset managerGenevaOnyx et Cie SA
Onyx et Cie SA Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Onyx et Cie SA is a multi-family office providing family wealth management and financial advice. Its services include investment advice, wealth and succession planning, and the establishment of structures such as trusts, foundations and holding companies, as well as legal, accounting and personal support services.

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Products & services

Industry:Asset manager
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3.8/5

Onyx et Cie SA

✓ Offered6
Wealth management
Wealth management, investment advice, discretionary or advisory mandates, diversification of assets, monthly or quarterly and consolidated reporting of holdings.
Wealth and estate planning
Wealth and estate structures, trusts, family foundations, holdings, marriage contracts, family charters, life insurance and international relocation.
Personal assistance
Private accounting, tax returns, consolidation of wealth, budget and invoice management, legal services, concierge, asset administration and insurance.
Business development
Financial consulting, acquisition and disposal of assets, structuring of family businesses, target search, joint ventures, mergers, audits, credit and setup in Asia.
Family governance
Family meetings, family council, family charter and support to organise the relationship between family and business, to preserve harmony and continuity.
Philanthropic projects
Philanthropy consulting, setting up trusts and charitable foundations, organising fundraising events and monitoring the projects according to the applicable regulations.
Trust & reputation

ranQ Trust Score of Onyx et Cie SA: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of November 2026

Onyx et Cie SA scores 53.8 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.70.824%
  • 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.27.910%
  • 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.35.08%
Onyx et Cie SA scores 89.3 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.70.07%
Onyx et Cie SA 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%
Onyx et Cie SA scores 3.7 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 35.7.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Onyx et Cie SA reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

May 26, 2021Media
À Genève, trois gérants indépendants s’unissent sous la bannière de la durabilité
agefi.com

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Location

Rue des Alpes 7
1201 Geneva
Opening hours
Mon
08:00 - 13:00, 14:00 - 19:00
Tue
08:00 - 13:00, 14:00 - 19:00
Wed
08:00 - 13:00, 14:00 - 19:00
Thu
08:00 - 13:00, 14:00 - 19:00
Fri
08:00 - 13:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.605.040
Founded
2000 · 26 years
Last commercial register change
March 9, 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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