# Onyx & Cie SA

Onyx & Cie SA is a Multi Family Office based in Geneva, Switzerland.

## Overview

- **Organization type:** Multi Family Office
- **Headquarters:** Geneva, Switzerland
- **Region:** Europe
- **Address:** Geneva, Switzerland
- **Founded:** 1993
- **Assets under management:** Undisclosed
- **Website:** onyx-cie.ch
- **LinkedIn:** https://ch.linkedin.com/company/onyx-&-cie-sa

## Regulatory record

- **Reports private funds:** No

## About

Onyx & Cie SA was established in 1993. It originates from the Croce family's legal practice and remains fully owned by members of that Swiss family. The firm operates as part of the Croce & Associés group, which includes law offices in Geneva, London, Singapore and Shanghai plus a New Zealand trust company. Services cover wealth management, legal and tax advice, estate planning via trusts and holdings, concierge administration of real estate, yachts and aircraft, and philanthropy coordination. Investment types include direct co-investments and SPVs, hedge funds, private equity, real estate and collectibles. Geographic reach spans Europe, Asia and Oceania with an ESG lens applied to technology-related decisions. The firm holds CHF 500,000 in share capital and belongs to the Association Suisse des Gérants de Fortune. It applies Swiss standards for asset management and investment advice. No dated operational events from the last 24 months appear in public records. Ownership by a single Swiss lawyer family creates a structural link between legal practice and family-office services that is uncommon among independent multi-family offices.

## Sectors

- Luxury
- Real Estate
- Private Equity
- Hedge Funds

## People

- Manuela Robutti-Croce — Contact person

## Questions

### Who runs investment decisions at Onyx & Cie SA?

Investment decisions rest with the lawyer-led board drawn from the owning Croce family. The firm applies Swiss regulatory standards and long-term multi-generational criteria.

### How does Onyx & Cie SA source proprietary deal flow?

Deal flow arrives through the family's cross-border legal network and the group's offices in London, Singapore and Shanghai.

### Is Onyx & Cie SA structured as a single family office or does it operate more like a venture firm?

It functions as a multi-family office that also provides legal, tax and concierge services to multiple European and Asian families.

### Does Onyx & Cie SA participate in fund commitments or only direct deals?

The firm uses both fund commitments and direct co-investments or SPVs across private equity, hedge funds and real estate.

### What investment stages does Onyx & Cie SA typically target?

The firm targets long-term holdings suited to multi-generational wealth preservation rather than early-stage venture.

### How is Onyx & Cie SA related to Croce & Associés?

Onyx & Cie SA forms part of the Croce & Associés group and shares ownership with the group's law firm and New Zealand trust company.

## Related profiles

- [Onerock Investments](https://altss.com/profile/onerock-investments)
- [Opal Family Office](https://altss.com/profile/opal-family-office)

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Last updated: 2026-08-10T15:54:10.904Z

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