The chief executive of 3A, the fund of funds arm of Swiss private bank Syz & Co., has resigned after five years at the helm. Jean Keller, a well-known figure in the hedge fund industry, was instrumental in building the firm's business outside of Switzerland and grew assets to a peak of $4.5bn from $1.1bn during his tenure.

Keller confirmed his departure. He told Financial News that when his gardening leave ends in February he will join Argos Managers, a small boutique asset manager based in Geneva, to help grow its business.