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Onyx et Cie
Onyx et Cie is a multi-family office headquartered in Geneva. The firm provides tailored wealth management, investment advisory, and succession planning...
Onyx et Cie
Onyx et Cie is a multi-family office headquartered in Geneva. The firm provides tailored wealth management, investment advisory, and succession planning services to families and entrepreneurs. With a focus on long-term capital preservation and growth, Onyx et Cie works closely with clients to address complex cross-border needs—offers integrated solutions across asset classes, estate structuring, and philanthropic initiatives to support multigenerational wealth objectives.
General information
Firm type
Multi Family Office
Year founded
1993
Location
Region
Europe
Country
Switzerland
City
Geneva
Frequently asked questions
What is Onyx et Cie?
Onyx et Cie is a multi family office headquartered in Geneva, Switzerland.
When was Onyx et Cie founded?
Onyx et Cie was founded in 1993.
Where is Onyx et Cie headquartered?
Onyx et Cie is headquartered in Geneva, Switzerland, in the Europe region.
What does Altss track for Onyx et Cie?
Altss maintains an OSINT-verified profile of Onyx et Cie covering investment focus (ESG policy, ticket size, target IRR, currency preference, regional focuses, industry focuses, technological focuses), team (service providers and advisors), deals (company deals and fund commitments), assets (real estate, public market positions, private companies, art and cultural holdings, philanthropy and foundations), and network (club memberships, associations, and event participation). Detailed values are available to Altss subscribers.
What is Onyx et Cie's website?
Onyx et Cie's public website is www.onyx-cie.ch. Verified contact details for principals and decision-makers are available to Altss subscribers.
What type of firm is Onyx et Cie?
Onyx et Cie is classified by Altss as a Multi Family Office, operating from Switzerland within the Europe region.
How does Altss source intelligence on Onyx et Cie?
Altss combines OSINT (open-source intelligence) with regulatory filings, public disclosures, and licensed data partners. Source provenance is tracked to support compliance-ready research workflows.
When was Onyx et Cie's Altss profile last updated?
Onyx et Cie's profile on Altss was last refreshed on May 29, 2026. Continuous updates are applied as new public information is verified.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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