Sienna Investment Managers (SIM), a subsidiary of Groupe Bruxelles Lambert (GBL), Europe's largest investment holding company, has been operating as a pan-European investment company since 2021, offering and managing a variety of liquid and illiquid investment solutions for predominantly institutional clients. With over €30 billion in assets under management (AuM) and more than 300 colleagues, we are one of the major European market participants. Together, we develop ...