Since 1926, Loomis, Sayles & Company has helped 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. Using foresight and flexibility, Loomis Sayles looks far and wide for value – across traditional asset classes and alternative investments – to pursue attractive, sustainable returns for clients.

Assets Under Management

$302.1* billion at 03/31/2023

*Please note that fund and account values may not total to firm AUM due to rounding

Funds and their amounts
color in donut fund amount
US Mutual Funds$82.4B

US Separate Accounts$157.3B

Non-US Mutual Funds$30.4B

Non-US Separate Accounts$32.0B

Loomis Sayles is an Affiliate of Natixis Investment Managers

Natixis Investment Managers

Natixis Investment Managers serves financial professionals with more insightful ways to construct portfolios. Powered by the expertise of more than 20 specialized investment managers globally, we apply Active Thinking® to deliver proactive solutions that help clients pursue better outcomes in all markets. Natixis ranks among the world’s largest asset management firms 1 ($917.1/€802.1 billion AUM 2).

Natixis Investment Managers includes all of the investment management and distribution entities affiliated with Natixis Distribution, LLC and Natixis Investment Managers S.A. Services/products are not available to all investors in all jurisdictions.

Office Locations

Map of world with locations highlighted


  • Boston
  • Chicago
  • Detroit
  • San Francisco


  • London
  • Singapore
  • Utrecht

Loomis Sayles Trust Company, LLC ("LSTC"), a wholly owned subsidiary of Loomis, Sayles & Company, L.P., received a charter to operate as a New Hampshire non-depository trust company from the New Hampshire Office of the Bank Commissioner on February 13, 2007. As of December 31, 2022, LSTC is trustee for and manages more than $33 billion in assets.