FRAUD ALERT - VIGILANCE REQUESTED

The Sienna Investment Managers Group would like to draw your attention to the risk of identity usurpation by fraudsters inciting individual investors to invest in fraudulent financial investments. The companies of the Sienna Investment Managers Group do not approach individual investors directly and therefore we ask you to exercise the utmost vigilance by not responding to any investment solicitations via e-mail, telephone calls or social networking/instant messaging. If you have made a payment to a scammer, contact your bank immediately to block the transfer or request the return of the funds paid. You can report these practices via the government website: www.internet-signalement.gouv.fr

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Sienna IM Group

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About Us

Sienna Investment Managers is a multi-asset manager that combines listed and private assets. Sienna IM develops customized and innovative solutions for its clients to help them make the most of their investments.

Our Mission

Sienna Investment Managers seeks to challenge the status quo and change mindsets with the firm belief that today’s investments shape the communities of tomorrow. While we naturally strive for performance, we are also committed to priviledge investments that have a positive impact. In the current environment, investors are looking for more than results: their asset managers must commit to making a difference, while anticipating, analysing, and managing risk in a judicious and agile manner.

The teams at Sienna Investment Managers put all their experience and knowledge of alternative markets to work for their clients.

Awards and commitment

Sienna Investment Managers is recognized for its expertise and commitment to responsible investment. As a signatory of the PRI, we have received several awars for our capacity for innovation : Innovation Award at the Pyramides de la Gestion de Patrimoine 2025, AGEFI Innovation Award, inclusion in the list of “50 management companies that matter“, “High Profile” ranking in the Senior Debt category by Décideurs Magazine, and the Silver Trophy for Employee Savings. All if these are proof of the quality and performance of our investment solutions.

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Leadersleague Gestion D Actifs Marches Cotes Encours Superieurs A 20 Milliards D Euros Classement 2026 Societes De Gestion France 1765556779167
Leadersleague Gestion D Actifs Operations Immobilieres Investissement Classement 2026 Societes De Gestion France 1765556773965
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History

Starting with a project initiated in 2013, Sienna Investment Managers is currently managing around €33 billion of asset value and counts some 110 employees.

Sienna Investment Managers aims to become a leader in third-party asset management.

~ €33 bn
of AuM as of end 2025
+ €100m
revenues
~ 110
employees

Our team

Sienna Investment Managers employs around 110 people organised into specialised investment teams and corporate functions.

Meet our team

Business Meeting

Contact us