Quantitative Equity Portfolio Manager (F/O) - Ostrum

Natixis; Paris; Hybrid; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

Career development

Training programs

Job summary

Ostrum Asset Management is seeking a Quantitative Equity Portfolio Manager (F/O) based in Paris. You will join a six-member Model Management team responsible for modelled management of equity and related portfolios for institutional clients.

The role emphasizes active portfolio decisions, model development, and client interactions. The position operates in an international setting, with hybrid work options in Paris.

Qualifications

• Strong understanding of equity markets and macro environment.
• Proficient in quantitative analysis and developing models/strategies.
• Able to explain quantitative concepts in economic terms to clients or team.

Responsibilities

• Manage equity portfolios and participate in investment decisions.
• Develop models and tools to improve investment processes.
• Support commercial activity with meetings with clients or prospects.

Skills

Equity markets

Quantitative analysis

Computer science

English C1

Communication

Autonomy

Teamwork

Job description

Quantitative Equity Portfolio Manager (F/O) - Ostrum

• Permanent
• 21653
• Paris

Company Description

A responsible 1 European institutional investment management leader 2 , Ostrum Asset Management supports its clients across the entire investment value chain, with a full range of solutions, a set of insurance-based (equities, fixed income, multi-assets), active (fixed income, money market, equities) and quantitative management offerings, with €393 billion under management 3 , combined with a comprehensive suite of dedicated services.

• Ostrum AM was one of the first French asset manager signatories to the PRI in 2008. More details: www.unpri.org
• IPE Top 500 Asset Managers (Investment & Pensions Europe) ranked Ostrum AM as the 12 th largest institutional asset manager, as at 12/31/2025. Any reference to a ranking, a rating or an award provides no guarantee for future performance.
• Source: Ostrum Asset Management, consolidated data at end-June 2026.

Job Description

You are joining the Model Management team as an Equity portfolio manager. Composed of 6 quantitative managers, the team is in charge of modelled management of equity, fixed income, multi-asset, overlay and structured portfolios on behalf of Ostrum’s mainly institutional clients. This management, where models are at the heart of performance generation, totals an outstanding amount of more than €5 billion. It aims to be active and dynamic, both in the daily management of portfolios and in the continuous improvement of underlying models.

On a daily basis, your tasks are to:

• manage portfolios equities: active participation in investment decisions, placing orders, performance analysis, reporting,
• develop models and tools to improve existing investment processes and create new strategies,
• support commercial activity : meetings with clients or prospects, frequent interactions with the Investment Specialists and commercial entities.

You work in an international environment, within a community of experts who place excellence, impact and collective action at the heart of everything they do.

This position is based in Paris with the possibility to work from home.

We place our employees at the center of our attention. Internal mobility, career development and training programs allow you to grow and flourish throughout your journey.

You work in a hybrid, inclusive and collaborative working environment.

About the recruitment process

You will be contacted by one of our recruiters before meeting our business experts (manager, team member or business sector).

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Required Skills/Qualifications/Experience

About you: If you recognize yourself in the following description, you are made to work with us!

You master:

• the equity markets as well as the economic and financial environment
• quantitative analysis and computer science to test and develop new strategies

You have excellent interpersonal skills, a very good ability to listen; you are:

• comfortable in business relationships,
• able to explain and translate quantitative management into economic and financial concepts,
• curious and rigorous,
• autonomous and possessing a strong team spirit,

You master English with a minimum C1 level.

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