Sienna Gestion

What Sienna Gestion does

Sienna Gestion is a French asset management company (société de gestion) authorized by the AMF under number GP 97020 since March 13, 1997, and operating under the Sienna Investment Managers (Sienna IM) commercial brand. The firm is a wholly-owned subsidiary of Sienna Investment Managers, which in turn is owned by the Belgian holding company GBL (Group Bruxelles Lambert). Headquartered at 21 boulevard Haussmann in Paris, Sienna Gestion managed €30.5 billion in assets under management as of December 31, 2025, with €29.5 billion (approximately 95% of total AUM) integrated under Socially Responsible Investment (ISR) criteria. The firm positions itself as a pioneer of responsible investing in France since 2000 and as a pioneer of hybrid management combining listed and private assets.

Sienna Gestion operates an extensive product range spanning monetary funds, short-term and long-term bond funds (including green and social impact bonds), thematic and sovereign equity funds, multi-asset funds, hybrid treasury solutions, and private-asset vehicles (notably FCPR Sienna Private Assets Allocation and the Sienna Dette Privée Défense Europe private debt fund). The firm also manages employee savings (FCPE) products under the MH Epargne brand via its strategic partnership with Malakoff Humanis. Its responsible investment technology stack rests on a proprietary ESG scoring methodology integrating five external data providers (Sustainalytics, S&P Global Trucost, Proxinvest, EthiFinance, Humpact) across three pillars and eight themes, supplemented by sectoral exclusions, a shareholder engagement and voting policy, and a climate roadmap aligned with the Paris Agreement. The firm holds four official French labels: ISR (3 funds, €860.4M), CIES (17 funds, €3B), Finansol (14 funds, €1.4B), and Greenfin (1 fund, €316.7M).

The revenue model is subscription-based asset management fees charged on AUM, with disclosed management fees of approximately 1.50% per year for flagship equity funds, 3.00% entry fees on select share classes, no exit fees, and 20% performance fees on the master fund. Distribution is split 60% institutional (via dedicated field-sales relationship management) and 40% retail/private clients, the latter accessed through wealth management advisors (CGPs via Meilleurtaux and Patrimeta), employee savings networks, and insurance-vie wrappers. Leadership is headed by Director General Xavier Collot, with David Taieb as CIO for Listed Assets, Jean Marie Pean as Director of Responsible Finance, Raphaël Dupuy-Sallé as money market portfolio manager, and Gilles Guérin as co-manager of the FCPR private assets allocation fund.

Name

Sienna Gestion

Legal name

SIENNA GESTION

Website

https://sienna-gestion.com

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

Sienna Gestion is a French asset management company managing €30.5 billion in listed and private assets under the Sienna Investment Managers brand. It serves institutional investors (60%) and private clients (40%) with ESG-integrated, multi-asset-class funds and multiple French responsible-investment labels.

Ownership category

akta.pro rank

Product category

Asset Management

NAICS

Portfolio Management and Investment Advice (523940), Portfolio Management and Investment Advice (52394), Open-End Investment Funds (525910)

SIC

Investment Advice (6282)

akta.pro primary industry

Institutional Consulting RIAs (OCIO/Endowments/Foundations/Pensions) (FSAAACAG)

akta.pro secondary industries

Real Assets Fund of Funds (Real Estate / Infrastructure / Natural Resources FoF) (FSAHAKAG), Real Estate Portfolio & Fund Management (Institutional/REIT/PE) (BPAJAMAJ)

Keywords

• Asset management services
• Responsible investment funds
• Private debt funds
• Employee savings management
• ESG portfolio management

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Asset Management Fees: Sienna Gestion generates revenue through management fees charged on assets under management across its fund range including OPCVM, FCPE, and FIA products. Fees vary by fund type and share class, with typical management fees around 1.50% per year for equity funds.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Sienna Gestion is a French asset management company (société de gestion) that manages investment funds across monetary, fixed income, equity, private debt, and hybrid (listed-plus-private) asset classes for institutional and private investors. Its fund range includes OPCVM, FCPE (employee savings), and FIA products, with approximately €30.5 billion in listed AUM as of December 31, 2025, of which nearly 95% is integrated with socially responsible investment (ISR) criteria. The company is recognized as a pioneer in responsible investment in France since 2000 and in hybrid management combining listed and private assets.

Product overview

Sienna Gestion operates as an asset management company offering a comprehensive range of investment funds across multiple asset classes and thematic strategies. The product portfolio spans monetary funds (SIENNA MONETAIRE), short-term and long-term bond funds (SIENNA COURT TERME, SIENNA OBLIGATIONS VERTES, SIENNA OBLIGATIONS IMPACT SOCIAL), equity funds (SIENNA ACTIONS EURO, SIENNA ACTIONS TRANSITION CLIMAT, SIENNA MEGATENDANCES), multi-asset funds, and hybrid/private assets funds (FCPR SIENNA PRIVATE ASSETS ALLOCATION, SIENNA DETTE PRIVEE DEFENSE EUROPE). The company also manages employee savings funds (FCPE) under the MH EPARGNE brand. Key differentiators include responsible investment focus with multiple ESG labels (ISR, Greenfin, Finansol, CIES) and specialized thematic offerings in climate transition, social solidarity, and European sovereignty. The funds serve both institutional and retail investors through various distribution channels.

Differentiator

Problem solved

Functional benefit

Products and services

• Sienna Monétaire Monetary fund offering short-term liquidity solutions for investors, with approximately €2.7 billion in assets under management.
• Sienna Court Terme Short-term bond fund providing liquidity and yield for medium-term investment horizons; ISR-labeled.
• Sienna Trésorerie Plus Hybrid treasury fund combining the liquidity of listed bonds with the potential yield of non-listed private debt assets.
• Sienna Dette Privée Défense Europe Private debt fund enabling direct participation in financing the European defense industry, with AMF approval from September 2025.
• Sienna Obligations Vertes Green bond fund with Greenfin label, investing in environmentally sustainable debt instruments, with approximately €316.7 million in assets.
• Sienna Obligations Impact Social Bond fund with Article 9 SFDR classification promoting social impact investments, with approximately €169 million in assets.
• Sienna Actions Transition Climat Equity fund targeting companies contributing to climate transition, with strong performance track record and ISR label.
• Sienna Impact Solidaire Solidarity fund promoting social and environmental impact investments for individual and institutional investors.
• Sienna Mégatendances Equity fund capturing long-term megatrend investments with strong performance metrics.
• Sienna Actions Euro Souveraineté Equity fund with Eurozone sovereignty theme, AMF approved in June 2025, with 1.50% annual management fee, 3.00% entry fee, and no exit fee.
• FCPR Sienna Private Assets Allocation Private equity fund (FCPR) invested across 10 strategies covering dozens of companies and infrastructure assets, with Article 8 SFDR classification and risk indicator 6/7 with >8 year investment horizon. Winner of the 2025 Coupole de l'innovation (L'AGEFI).
• Sienna Sélection Actifs Privés Fund providing selection of private assets strategies, AMF approved in July 2024, with Article 8 SFDR classification. Winner of the 2025 Prix de l'innovation (Investissement Conseils).
• MH Epargne Monétaire Employee savings monetary fund (FCPE) with CIES label, with approximately €1.31 billion in assets, distributed through the Malakoff Humanis partnership.

Quantifiable outcome

• 95% of AUM managed with ISR criteria
• +3 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered key, supporting and core.

• YCE PartnerskeyStrategic or Co-development Partner · 1 January 2024Partnership for joint research on Loi Industrie Verte impacts. Conducted the 2nd Barometer survey of major savings sector actors on green industry law implications, with findings showing 69% developed marketing/communication strategies and 75% see current context as development opportunity for green and ISR UC.
• Cedrus PartnerssupportingGTM or Marketing Partner · 1 January 2024Collaboration on Evergreen strategy conference video and educational content regarding Sienna IM's evergreen investment strategy. Cedrus Partners produced and co-hosted video interviews with Sienna IM fund managers.
• Malakoff HumaniscoreChannel Partner/ Reseller/ Distributor · 1 January 2022Strategic partnership in employee savings domain. Malakoff Humanis and Sienna Investment Managers finalized their agreement with Sienna Gestion distributing employee savings products (FCPE) under the partnership. Multiple MH Epargne branded funds are managed by Sienna Gestion, including MH Epargne Monétaire (€1.31B AUM) and MH Epargne Actions. The partnership includes joint award recognition and marketing initiatives.
• MeilleurtauxsupportingChannel Partner/ Reseller/ DistributorDistribution partner for Sienna Dette Privée Défense Europe fund, enabling subscription through Meilleurtaux platform for retail investors seeking private debt investments.
• PatrimetasupportingChannel Partner/ Reseller/ DistributorWealth management advisor portal (Vitrine des Conseillers en Gestion de Patrimoine) for distribution of Sienna Gestion products through independent advisors.

Scale indicators15 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Mirova: French sustainable investment manager (Natixis affiliate) focused on listed and private ESG strategies. Direct competitor in the ISR/impact segment where Sienna manages 95% of its AUM, with overlapping climate, green bond, and solidarity product offerings.
• Mandarine Gestion: French boutique asset manager specializing in European equities and ESG/SRI funds. Comparable mid-size French competitor with similar thematic equity strategies (climate, megatrends) overlapping with Sienna's Actions Transition Climat and Mégatendances funds.
• LBPAM (La Banque Postale Asset Management): French asset manager affiliated with La Banque Postale offering ISR, green, and solidarity-labeled funds across all asset classes. Competes directly with Sienna for French institutional mandates and retail distribution through banking networks.
• OFI Invest: French mid-size asset manager offering mutual funds, employee savings, and institutional mandates with significant ESG/ISR positioning. Direct competitor to Sienna in French institutional and employee savings segments, including similar CIES-labeled product strategies.
• La Financière de l'Échiquier: French boutique asset manager focused on European equities with strong ISR/ESG labeling and conviction-driven strategies. Comparable mid-size French competitor in thematic and ISR-labeled equity funds where Sienna holds multiple label certifications.
• Ostrum Asset Management: French institutional asset manager (Natixis affiliate) managing fixed income, equities, and multi-asset for institutional clients. Highly comparable to Sienna's listed-asset institutional franchise (€17.4B rates AUM at Sienna competes with Ostrum's bond-heavy book).
• Rothschild & Co Asset Management: French institutional asset manager offering fixed income, equities, and multi-asset solutions with ESG integration. Comparable to Sienna in institutional fixed income (Rothschild's €17B+ rates book competes with Sienna's €17.4B) and ESG methodology depth.
• Tikehau Capital: French alternative asset manager with significant private debt, private equity, and hybrid strategies. Comparable to Sienna in private assets (Sienna Private Assets Allocation, Dette Privée Défense Europe) and hybrid listed/private management positioning.
• Ecofi Investments: French ISR-focused asset manager (Groupe Crédit Coopératif) with strong ESG label portfolio and solidarity/sustainable investing heritage. Comparable mid-size competitor in the French ISR mutual fund space where Sienna holds 3 ISR-labeled funds.

Broad incumbents

• Amundi: France's largest asset manager (€2T+ AUM) offering mutual funds, ETFs, and institutional mandates across all asset classes. Direct competitor to Sienna in French institutional and retail ESG/sustainable investment, with much larger scale and broader international footprint.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sienna Gestion