---
title: "W5 Group: Single-Family Office in Miami Beach"
description: "W5 Group, a single-family office in Miami Beach, United States. Key facts, people and strategy, from public filings, company sites and press."
url: https://vestdoor.com/family-office/w5-group
updated: 2026-11-11
---

# W5 Group

Single family office: transatlantic, family-held investment office of the Winter family.

## Decision makers

| Name | Role |
| --- | --- |
| Ralph Winter | Founder and principal |

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## Latest investments

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## Investment strategy

Invests the family's own capital with patience and a generational horizon; ownership rather than exposure

| Focus | Detail |
| --- | --- |
| Asset classes | Real estate (core), direct stakes in operating businesses |
| Sectors | Residential and commercial real estate; technology and emerging ideas (next gen) |
| Geographies | Europe and United States |
| Direct vs funds | Direct |

## Key facts

- **Type:** Single-family office
- **Headquarters:** Miami Beach, United States
- **Family:** Winter family (founder/principal Ralph Winter; next-generation principal Celine Winter)
- **Source of wealth:** Ralph Winter's real-estate investment and development in Europe and the US
- **Other offices:** Frankfurt · Zurich · Zug
- **Website:** [w5-group.com](https://w5-group.com/)

## Listed in

- [Family offices in Switzerland](https://vestdoor.com/family-offices/europe/switzerland)

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## Frequently asked questions

### What type of organisation is W5 Group?

W5 Group is described as: Single family office: transatlantic, family-held investment office of the Winter family.

### Where is W5 Group based?

W5 Group is headquartered in Miami Beach, United States. It also lists Frankfurt, Zurich and Zug.

### Which family is behind W5 Group?

Winter family (founder/principal Ralph Winter; next-generation principal Celine Winter). Source of wealth: Ralph Winter's real-estate investment and development in Europe and the US.

### Who runs W5 Group?

Public roles include Ralph Winter (Founder and principal).

### What does W5 Group invest in?

Invests the family's own capital with patience and a generational horizon; ownership rather than exposure.

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Canonical: https://vestdoor.com/family-office/w5-group
Markdown twin: https://vestdoor.com/family-office/w5-group.md