Our Affiliates

Natixis Investment Managers is built on a belief in the power of independent investment thinking. Each affiliated money manager in the firm is free to concentrate on those investment styles and disciplines where they have proven expertise. The end result is a selection of more than 100 investment strategies from some of the world’s most respected names in investment management.

Active Index Advisors®

Active Index Advisors® (AIA) offers custom investment solutions by combining the major benefits of both active and index management. AIA employs quantitative strategies to suit each investor’s needs and maximize efficiency, while seeking to provide enhanced after-tax returns.

* A division of Natixis Advisors, L.P.​


    • Founded: 2002
    • Headquarters: San Francisco, CA, U.S.A.
    • Expertise: Custom investments
  • AUM: $1.3B (€1.1B, £948M) as of Jun 30, 2018

AEW Capital Management


AEW is one of the world's largest real estate asset managers and has a long track record of successfully implementing core, value-add, and opportunistic investment strategies on behalf of clients. It offers a wide range of investment vehicles, including comingled funds, separate accounts, and securities mandates, across all strategies.


    • Founded: 1981
    • Headquarters: Boston, MA, U.S.A.
    • Expertise: Real estate
  • AUM: $25.7B (€22B, £19.4B) as of Jun 30, 2018

AlphaSimplex Group


AlphaSimplex Group, LLC offers alternative investment solutions designed to adapt to changing market dynamics. The products use AdaptiveVolatility Management™ to help offset the impact of short-term fluctuations in market risk. The products are liquid, actively managed, and adaptive to current market conditions.


    • Founded: 1999
    • Headquarters: Cambridge, MA, U.S.A.
    • Expertise: Alternative investment strategies
  • AUM: $7.6B (€6.5B, £5.7B) as of Jun 30, 2018

Darius Capital Partners


Darius provides customized absolute return solutions that answer investors’ needs for transparency, liquidity and risk management. The firm is regulated by the Amf and authorized to manage various types of investment vehicles, including UCITS and AIFM funds, offshore funds, and mandates. Darius selects from a broad range of products to deliver tailor-made solutions to clients.


    • Founded: 2004
    • Headquarters: Paris
    • Expertise: Absolute return solutions
  • AUM: $732M (€627M, £555M) as of Jun 30, 2018



DNCA Investments specializes in a European-focused, conviction-driven investment approach. The firm’s experienced team develops investment products for private and institutional clients. DNCA offers a comprehensive range of funds covering fixed income, absolute return, multi-asset, and equity strategies.

A brand of DNCA Finance.


    • Founded: 2000
    • Headquarters: Paris, France
    • Expertise: Conviction-based equity, fixed income, diversified, and total return portfolios

Dorval Asset Management


Dorval Asset Management* is recognized for flexible wealth management strategies and European equity selection. The firm’s conviction-based approach is characterized by active management and is unconstrained by indices. Dorval offers a complementary range of funds composed of European equities funds and flexible funds.

* A subsidiary of Ostrum Asset Management


    • Founded: 1993
    • Headquarters: France
    • Expertise: Flexible management
  • AUM: $3.5B (€3B, £2.7B) as of Jun 30, 2018

Gateway Investment Advisers


Gateway Investment Advisers, LLC specializes in low volatility equity strategies for risk-conscious investors. The firm has maintained consistent focus on reducing the risk of equity investing with index option strategies. Gateway’s core low-volatility strategy seeks to capture the majority of the returns associated with equity market investments, while exposing investors to less risk than other equity investments.


    • Founded: 1977
    • Headquarters: Cincinnati, OH, U.S.A.
    • Expertise: Low-volatility equity strategies
  • AUM: $12.1B (€10.4B, £9.2B) as of Jun 30, 2018

H2O Asset Management


H2O Asset Management is a London-based firm that primarily specializes in global macro investment strategies. H2O serves institutional, corporate, and individual investors through a range of absolute and total return UCITS, actively managed across global debt, currency, and equity markets.


    • Founded: 2010
    • Headquarters: London, England
    • Expertise: Alternative global fixed income and global macro management
  • AUM: $27.4B (€23.5B, £20.8B) as of Jun 30, 2018

Harris Associates


Harris Associates manages US, global, and international strategies. The firm employs an intensive, fundamental in-house research process to identify companies trading at a significant discount to managers' estimates of intrinsic business value. Harris Associates uses its experienced team, consistent and pervasive philosophy, repeatable and fundamental process, and long-term investment horizons as the foundation of steadfast conviction.


    • Founded: 1976
    • Headquarters: Chicago, IL, U.S.A.
    • Advisor to the Oakmark funds
    • Expertise: Value investments
  • AUM: $139.4B (€119.4B, £105.6B) as of Jun 30, 2018

Loomis, Sayles & Company


Loomis, Sayles & Company helps fulfill the investment needs of institutional and mutual fund clients worldwide. The firm’s performance-driven investors integrate deep proprietary research and integrated risk analysis to make informed, judicious decisions. Loomis Sayles looks for value across traditional asset classes and alternative investments to pursue attractive, sustainable returns.


    • Founded: 1926
    • Headquarters: Boston, MA, U.S.A.
    • Expertise: Actively managed equity, fixed income, and alternative investments
  • AUM: $248.6B (€212.9B, £188.3B) as of Jun 30, 2018

Managed Portfolio Advisors®


Managed Portfolio Advisors®​* offers flexible, customized overlay management services. The firm provides a comprehensive suite of services including product development, portfolio construction, and investment management, where recommendations from multiple money managers are implemented in a single, integrated portfolio.

* A division of Natixis Advisors, L.P.


    • Founded: 2005
    • Headquarters: San Francisco, CA, U.S.A.
    • Expertise: Overlay management, taxable wealth management, and investment solutions
  • AUM: $31.2B (€26.7B, £23.6B) as of Jun 30, 2018

McDonnell Investment Management


McDonnell Investment Management, LLC delivers quality-focused fixed income strategies to a diverse client base – including institutions, family offices, mutual fund companies, and individual investors. They follow a disciplined, research-driven, risk-managed process to pinpoint attractive relative value within high-quality municipal opportunities and investment-grade taxable bonds.


    • Founded: 2001
    • Headquarters: Oakbrook Terrace, IL, U.S.A.
    • Expertise: Quality-focused fixed income specialist managing taxable and tax-exempt strategies
  • AUM: $11.3B (€9.7B, £8.6B) as of Jun 30, 2018



Mirova* is an investment manager dedicated to responsible investing through a conviction-driven approach. The firm’s goal is to combine value creation over the long term with sustainable development. Mirova is a pioneer in sustainable finance and dedicated to developing impactful solutions for its clients.

*Mirova is operated in the U.S. through Ostrum Asset Management U.S., LLC (Ostrum U.S.). Ostrum U.S., which launched in 2014, is majority‐owned by Ostrum Asset Management and minority‐owned by Mirova. Ostrum U.S. had $561M assets under management as of 12/31/2017.


    • Founded: 2012
    • Headquarters: Paris, France
    • Expertise: Responsible investment solutions
  • AUM: $11.5B (€9.8B, £8.7B) as of Jun 30, 2018



Ossiam is an expert in smart beta solutions that manages rules-based, systematic investment strategies across asset classes for institutional clients, private banks, and financial advisors. The firm offers a range of ETFs, open-ended funds, dedicated funds, and mandates across a variety of asset classes and themes.


    • Founded: 2010
    • Headquarters: Paris, France
    • Expertise: Smart beta ETFs
  • AUM: $3.5B (€3B, £2.7B) as of Jun 30, 2018

Ostrum Asset Management


Ostrum Asset Management has been committed to helping clients to provide for their future for more than 30 years. Ostrum Asset Management is a leading asset manager in Europe that provides a full range of high-performance fixed income, equity and insurance investment management strategies, with an active and fundamental approach.


    • Founded: 1984
    • Headquarters: Paris, France
    • Expertise: Credit, interest rates, private debt, equity and cross-asset insurance portfolio investments​​​
  • AUM: $409.7B (€350.9B, £310.3B) as of Jun 30, 2018

Private Equity Division

Private Equity Division* comprises a group of private equity affiliates. Through its unique multi-affiliate model, the division offers management in venture capital, fund of funds, and traditional private equity across a wide spectrum of risk/return profiles.

* Comprising six distinct private equity companies. Not available in all jurisdictions. Investor type limitations may apply.




Seeyond* specializes in active quantitative portfolio management. By adding active oversight to disciplined quantitative investment processes, Seeyond's investment strategies seek to optimally reward risk within three core expertises: equity strategies, multi-asset strategies, volatility & overlay strategies. The strategies leverage strong proprietary quantitative skills and long-term market experience.

*Seeyond is operated in the U.S. through Ostrum Asset Management U.S., LLC (Ostrum U.S.). Ostrum U.S., which launched in 2014, is majority‐owned by Ostrum Asset Management (Ostrum) and minority‐owned by Mirova, which is in turn wholly‐owned by Ostrum. Ostrum U.S. had $561M assets under management as of 12/31/2017.


    • Founded: 2012
    • Headquarters: Paris, France
    • Expertise: Active management
  • AUM: $9.8B (€8.4B, £7.4B) as of Jun 30, 2018

Vaughan Nelson Investment Management


Vaughan Nelson Investment Management specializes in US equities with a focus on targeted return. The firm employs a bottom-up, fundamental research process to capitalize on temporary information and liquidity inefficiencies in equities markets. The firm’s long-term, consistent approach draws on in-depth research and consistent process across all market capitalizations.


    • Founded: 1970
    • Headquarters: Houston, TX, U.S.A.
    • Expertise: US equity investments
  • AUM: $11.1B (€9.5B, £8.4B) as of Jun 30, 2018

Vega Investment Managers


VEGA Investment Managers develops responsive investment solutions for institutional and high net worth individual investors. The firm serves the needs of its clients with products that draw on strong know-how in “growth” stock picking, external fund selection, and separately managed accounts.


    • Founded: 2012
    • Headquarters: Paris, France
    • Expertise: Responsive investment solutions specialist
  • AUM: $8B (€6.8B, £6B) as of Jun 30, 2018