# Horizon21 AG

Horizon21 AG is a Single Family Office based in Zuerich, Switzerland.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Zuerich, Switzerland
- **Region:** Europe
- **Address:** Pfaffikon SZ, Switzerland
- **Founded:** 2004
- **Assets under management:** Undisclosed
- **Website:** horizon21.com
- **LinkedIn:** https://www.linkedin.com/company/horizon21

## Regulatory record

- **Reports private funds:** No

## About

Horizon21 AG was established in 2004 by Rainer-Marc Frey. The firm manages the fortune generated by the 2002 sale of RMF Investment Group to Man Group. Frey serves as founder and chairman. The office allocates across buyout, early-stage, late-stage and seed investments. Asset classes include private equity, private credit, venture vehicles, real estate, commodities and insurance-linked strategies. Confirmed positions and co-investments span Lonrho Holdings Ltd alongside Thomas Schmidheiny. Geographic reach covers Europe, North America, Asia, South America and the Caribbean. Adrian Janser serves as CEO. The firm maintains offices in Pfaffikon SZ and Zurich. Adjacent structures include the Frey Charitable Foundation, where Tatjana Frey and Adrian Janser hold board roles. No verifiable operational events from the last 24 months appear in available records.

## Sectors

- Private Equity
- Private Credit
- Venture Capital
- Real Estate

## Offices

- Zurich, Switzerland

## People

- Rainer-Marc Frey — Founder and Chairman
- Adrian Janser — CEO

## Questions

### Who runs investment decisions at Horizon21 AG?

Rainer-Marc Frey serves as founder and chairman. Adrian Janser acts as CEO and participates in board oversight of related vehicles including the Frey Charitable Foundation.

### Does Horizon21 AG participate in fund commitments or only direct deals?

The firm deploys through a mix that includes fund-of-funds vehicles alongside direct private equity, private credit and venture positions.

### What investment stages does Horizon21 AG typically target?

Confirmed stages include buyout, early stage, late stage and seed.

### How is Horizon21 AG related to the Frey Charitable Foundation?

The Frey Charitable Foundation operates as an adjacent philanthropic vehicle. Rainer-Marc Frey, Tatjana Frey and Adrian Janser hold governance roles across both entities.

## Related profiles

- [Horatio Investments](https://altss.com/profile/horatio-investments-adam-norris-family-office)
- [Horizon Advisors](https://altss.com/profile/horizon-advisors)

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

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