Sienna Capital is a fund of funds based in Strassen, Luxembourg. Established in 2013, The firm aims to generate risk-adjusted returns by constructing a diversified portfolio of investment managers. It supports managers by helping them raise money, attract talent, and source investment opportunities as well as by providing advice on governance and practices. It is the alternative investment platform of Groupe Bruxelles Lambert. The assets of the firm are managed by the board of directors.