Sienna Investment Managers

We are Sienna Investment Managers, a multi-expertise, pan-European asset manager and the alternative investment platform of the publicly traded investment holding company, Groupe Bruxelles Lambert (GBL). With a dedicated team of around 300 professionals spread across our offices in Paris, Luxembourg, London, Milan, Hamburg, Frankfurt, Madrid, Amsterdam, and Seoul, we are deeply rooted in the European market while maintaining a global perspective. Our core mission is to challenge the status quo and shift mindsets, driven by the firm belief that the investments we make today are instrumental in shaping the communities of tomorrow. We are committed to building bespoke and innovative solutions for our clients, always with a clear purpose in mind.

Our expertise spans a wide range of both listed and private assets, including real estate, private debt, private equity, and venture capital. This diverse capability allows us to construct hybrid investment strategies that offer our clients a unique blend of long-term performance, managed volatility, and meaningful impact. We don't just strive for financial returns; we are deeply committed to championing investments that have a positive and measurable effect on the world. We believe that in the current environment, investors are looking for more than just results. They need an asset manager that is committed to making a difference, one that can anticipate, analyze, and manage risk with agility and prudence. We leverage the extensive experience and deep knowledge of the private markets that our investment professionals have cultivated over many years within the GBL group to meet and exceed these expectations. Our DNA is to act with purpose to protect the future, focusing on major social and environmental challenges like climate change, biodiversity, and DE&I to implement real-life solutions.