Ostrum Asset Management

What Ostrum Asset Management does

Ostrum Asset Management is a Paris-headquartered European institutional asset manager that manages €388 billion in assets as of March 31, 2026, of which €269 billion is insurance-related. The firm, rebranded in November 2020 from Natixis Asset Management, operates as an affiliate of Natixis Investment Managers within the multi-affiliate structure of Groupe BPCE, France's second-largest banking group. It serves large institutional clients — primarily insurers, pension funds, health insurers, and corporations — through a direct enterprise sales motion and is ranked the 9th largest European institutional asset manager in the IPE Top 500 2025 (as of December 31, 2024).

The platform spans six core capabilities: Investment Solutions, Insurance Solutions & Management, Fixed Income, Equities, Multi-Asset, and Quantitative Management. Fixed Income, the strategic anchor, covers money market, short-term solutions, investment grade credit, crossover credit, high-yield credit, hold-to-maturity, total return bonds, aggregate, emerging bonds, sovereign bonds, inflation-linked bonds, and a 'Just Transition' strategy. The Quantitative Management division runs Minimum Volatility, ESG Focus, Global Macro, Multi-Strategies, Volatility Risk Premium, and Overlay approaches, combining quantitative methods with experienced portfolio management teams. ESG integration is firm-wide: 100% of analyzed assets are run through ESG criteria, 91% of open-ended fund AUM carries the French Label ISR, 70% of open-ended fund assets are rated 4 or 5 stars by Morningstar, and €47 billion sits in green and sustainable bonds. The firm is also a long-standing PRI signatory (since 2008) and has appeared in the RIBI Index for seven consecutive years.

The commercial model is B2B institutional asset management: revenue is generated through management fees as a percentage of customized AUM, billed annually with terms not publicly disclosed. Distribution is direct, via relationship managers targeting large enterprises across 17 country sites spanning Europe, APAC (Hong Kong, Singapore, Taiwan), and Latin America (Chile, Peru). Operational leadership comprises CEO Olivier Houix (appointed December 2023), Global CIO Gaëlle Malléjac (appointed October 2024), CIO Quantitative Management Emmanuel Bourdeix, COO Gaëlle Théaud-Gautheron, Head of Sustainable Transitions Maud Pierre-Minuit (appointed February 2026), Secretary General Vanessa Casano, and Head of Business Development Matthieu Mouly. The investment team totals 125 professionals including 80 portfolio managers, 29 insurance management experts, 9 ESG & CSR strategists, and more than 50 research experts.

Name

Ostrum Asset Management

Legal name

Ostrum Asset Management

Website

https://ostrum.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

251–500 employees

Short description

Ostrum Asset Management is a Paris-based European institutional asset manager serving insurers, pension funds, health insurers, and corporations with €388 billion AUM across fixed income, equities, multi-asset, insurance solutions, and quantitative management.

Ownership category

akta.pro rank

Product category

Institutional Asset Management

NAICS

Portfolio Management and Investment Advice (52394)

SIC

Investment Advice (6282)

akta.pro primary industry

OCIO & Multi-Asset Outsourced Portfolio Management (FSAAAJAF)

akta.pro secondary industries

OCIO Providers (Outsourced CIO) (FSAAAGAH), Managed Accounts & Unified Managed Accounts (UMAs) — Multi-Asset (FSAAAJAE)

Keywords

• Institutional asset management
• Fixed income management
• Insurance portfolio management
• Quantitative investment solutions
• ESG investment strategies

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, Infrastructure, Others

Revenue model

1. Asset Management Fees: Management fees charged as a percentage of assets under management (AUM). Ostrum AM manages €388 billion in assets as at March 31, 2026, generating revenue through tiered management fees based on asset class and strategy type.
2. Insurance Portfolio Management: Specialized liability-driven insurance portfolio management services including equities, bonds, and multi-asset portfolios with €269 billion in insurance-related management.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Ostrum Asset Management is a Paris-based European institutional asset manager providing investment management solutions across fixed income, equities, multi-asset, and quantitative strategies. The firm manages €388 billion in assets (as at March 31, 2026), including €269 billion in insurance-related mandates, with deep specialization in liability-driven insurance portfolio management and ESG-integrated fixed income strategies. It serves large institutional clients including insurers, pension funds, health insurers, and corporations through a comprehensive platform of investment solutions.

Product overview

Ostrum Asset Management is a European institutional asset management company offering a comprehensive platform of investment solutions. The core offerings include Investment Solutions, Insurance Solutions & Management, Fixed Income, Equities, Multi-Asset, and Quantitative Management strategies. Fixed Income capabilities encompass Just Transition, Money Market, Investment Grade Credit, Crossover Credit, High-Yield Credit, Hold to Maturity, Total Return Bonds, Aggregate, Emerging Bonds, Sovereign Bonds, and Inflation-Linked Bonds. The Quantitative Management division offers Minimum Volatility, ESG Focus, Global Macro, Multi-Strategies, and Volatility Risk Premium strategies. Notable fund products include the Ostrum SRI Credit 6M fund, Actions CAC 40 Strategy, Euro Inflation Strategy, and Global Emerging Bonds Strategy. The firm manages €388 billion in assets under management as of March 2026.

Differentiator

Problem solved

Functional benefit

Products and services

• Investment Solutions

Quantifiable outcome

• 70% of assets in open-ended funds rated 4 or 5 stars by Morningstar (as at March 31, 2026)
• +3 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• CNP AssurancescoreStrategic or Co-development Partner · 14 November 202440-year partnership between Ostrum Asset Management and CNP Assurances, marked by a special seminar on November 14, 2024 at the Maison de la Recherche celebrating the fruitful collaboration in asset management.
• Natixis Investment ManagerscoreStrategic or Co-development PartnerOstrum Asset Management is an affiliate of Natixis Investment Managers, which operates a multi-affiliate approach connecting clients to independent thinking and focused expertise of more than 15 active managers. Natixis Investment Managers is part of Groupe BPCE, the second-largest banking group in France.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Candriam: European institutional asset manager recognized for ESG and sustainable investment capabilities and a broad fixed income / multi-asset offering; comparable scale and competes for similar ESG-led European institutional mandates.
• Amundi: Europe's largest asset manager headquartered in Paris, with comparable institutional focus, fixed income and multi-asset capabilities, and similar ESG positioning. Direct competitor for the same European pension fund, insurer, and corporate treasury RFPs.
• AXA Investment Managers: Insurance-affiliated European institutional asset manager with a comparable liability-driven investment proposition, strong fixed income franchise and ESG credentials. Directly competes for the same insurer-owned mandates.
• BNP Paribas Asset Management: French bank-affiliated institutional asset manager offering fixed income, equities, multi-asset and quantitative strategies; comparable scale and product breadth, with overlapping insurer and pension fund client relationships across Europe.
• Allianz Global Investors: Insurance-affiliated asset manager offering fixed income, multi-asset and ESG solutions to European institutional clients, with analogous LDI/insurance portfolio capabilities and a comparable European institutional client base.
• Generali Investments: Insurance-affiliated European asset manager offering fixed income and multi-asset solutions to insurance and pension clients. Direct peer in the insurance-driven institutional asset management segment.
• Groupama Asset Management: French insurance-affiliated asset manager with deep fixed income and ALM expertise, direct competitor for French life insurer mandates. The new Global CIO of Ostrum previously held senior leadership roles at Groupama AM, making it a particularly close talent-pool comparable.
• LGIM (Legal & General Investment Management): UK-based institutional asset manager with deep LDI and pension fund expertise, scale comparable to Ostrum and overlapping client base across European pension schemes and insurance balance sheets.

Broad incumbents

• Natixis Investment Managers: The parent multi-affiliate platform of Ostrum and 15+ other specialized managers, providing the distribution umbrella and shared back-office; not a direct competitor but a structurally related entity that shapes Ostrum's strategic context.

Regional players

• La Banque Postale Asset Management: French bank-affiliated institutional asset manager focused on French fixed income and insurance portfolio management; competing primarily on French institutional RFPs with similar product mix.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/ostrumam
• YouTubeyoutube.com/c/OstrumAssetManagement
• LinkedInlinkedin.com/company/ostrum-asset-management

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Ostrum Asset Management