American wealth manager Tiedemann Advisors has partnered with a Swiss boutique to create a new Zurich-based investment office, led by a team of former Credit Suisse private bankers.

Tiedemann, which manages more than $20 billion in the US, along with Switzerland consultancy Constantia Partners, has launched Tiedemann Constantia, which will provide investment and wealth management services to high net worth individuals, families, family offices and foundations on “multiple continents”, the firms said.

The firm is led by chief executive and Constantia Partners founder Robert Weeber, a former Credit Suisse banker who h...