Quartet Family Office

Overview

Quartet is a multi-family office serving ultra-high-net-worth families, asset managers, and collectors. Founded in 2020, it supplies alternative investable assets and advice on specialist wealth management outside usual global markets, with a process from sourcing through delivery. Its areas of interest include alternative investments, funds, luxury goods, cars, and other alternative assets.

Services

• Alternative asset sourcing
• Specialist wealth management

Location

See more firms in Spain.

Sources and last checked

• Family Office Club research database, 2026 edition

Last checked October 21, 2026.

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