Delivering Investments for change

Sienna Investment Managers challenges the status quo and mindsets to deliver investment solutions for positive change. Sienna also assesses the impact that investment decisions can have on the future of the planet and people.

With increased efficiency and improved compliance with ESG requirements, Sienna offers alternative assets and innovative processes to manage a portfolio that delivers meaningful performance.

About us

Sienna Investment Managers is the alternative investment platform of the publicly-traded investment holding company GBL (Groupe Bruxelles Lambert). Sienna is present in Luxembourg, London and, since spring 2021, Paris. With extensive experience in asset management, Sienna Investment Managers has now started to invest on behalf of third-parties.

With the acquisition of L'Etoile Properties, Sienna now oversees €10 billion (including €2.7 billion of permanent capital or NAV) on behalf of its shareholder GBL as well as international clients, mainly through real estate assets, investments in private market funds as well as through direct equity investments in unlisted companies.

Acquisition of L’Etoile Properties

Sienna Investment Managers has recently announced the acquisition of pan-European real estate investment manager L’Etoile Properties, a market-leading real estate firm with €7 billion in AuM, from its founders. L’Etoile Properties has attracted capital from international institutional investors for more than 30 years, focusing on the investment and management of real estate assets including offices, hotels, and logistics centres.

The business has 85 employees across offices in Amsterdam, Hamburg, Paris, Madrid, London and South Korea

Press releases

Sienna Investment Managers passes the €30bn AuM milestone

L’Etoile Properties launches its European “broken core” office strategy for German institutional investors