About us

Your Zurich private bank

Maerki Baumann & Co. AG is an independent Swiss private bank headquartered in Zurich. The owners, management, and staff all pursue long-term objectives and strive to ensure lasting bonds. We cultivate a family-like corporate culture that is based on trust.

Our philosophy

As a family-owned private bank, we attach great importance to independence and security. Owners, management and employees pursue long-term goals and connections. Our services are fully tailored to the needs and satisfaction of our clients. The focus on client needs is firmly rooted in our corporate culture. As a family business, Maerki Baumann stands for a personal, honest and transparent service philosophy. We cultivate a familiar corporate culture based on trust.

Tradition and change

The private bank Maerki Baumann & Co. AG was founded in Zurich in 1932. It has offered proven strategies for generation, and it stands out through its innovative approach.

Hans G. Syz‑Witmer

Hans G. Syz‑Witmer

Chairman of the Board of Directors
Dr. Carole Schmied‑Syz

Dr Carole Schmied-Syz

Vice‑Chairwoman of the Board of Directors

The Zurich-based Syz family, which owns the private bank Maerki Baumann & Co. AG, is renowned for its long-term outlook and entrepreneurial approach. It is convinced that the bank can be run independently, even in the face of challenging parameters. One success factor in the bank's history is the art of combining tradition and change.

Maerki Baumann & Co. AG is currently in the hands of the second generation of the family. The siblings Hans G. Syz-Witmer and Dr iur. Carole Schmied-Syz act as Chair and Vice-Chair of the Board of Directors respectively. Together they own about 95% of the shares. From an operating perspective, the bank is managed by the Executive Board under the stewardship of Dr Stephan A. Zwahlen.

Dr. Stephan A. Zwahlen

Trust can not be bought, one has to earn it. Our long-standing client relationship bear witness to this.

Dr Stephan A. Zwahlen, Chief Executive Officer

Key figures 2023

Maerki Baumann & Co. AG has a robust financial base. More than 90 employees work with great care for our clients every day. The bank’s conservative risk and business policy is reflected in excellent balance sheet figures.

Core Capital (T1)
CHF 84 m
Client assets
CHF 9.2 bn
Tier 1 capital ratio
Number of employees

In our annual reports you can find out more about our bank and our financial strenght.