Biography

SĆ©bastien AndrĆ© is a Portfolio Manager on the Mortgage and Structured Finance Team at Loomis, Sayles & Company, where he co-manages a suite of Euro ABS products. He joined Loomis Sayles in 2024 from Ostrum Asset Management, where he was a structured credit investment fund manager and analyst responsible for European ABS, CLOs and covered bond investments. Previously, SĆ©bastien was an ABS fund manager and analyst at Natixis Investment Managers. Prior to that, he was an ABS quantitative and surveillance analyst at IXIS Asset Management responsible for credit analysis of European ABS & CLO investments. Prior to this, SĆ©bastien was a credit risk manager at CDC IXIS Asset Management Advisors. He began his career as a business analyst at Carat France. SĆ©bastien earned a master’s degree in applied mathematics for social sciences and a master’s degree in finance engineering and statistics from Paris Dauphine University.

Latest Insights by SƩbastien AndrƩ

Alpha Engine Perspectives Tracking a Likely Expansion of the European Securitisation Market
October 17, 2025 • 2 min read

Tracking a Likely Expansion of the European Securitisation Market

The Loomis Sayles Mortgage and Structured Finance Team discusses new legislation that they believe has the potential to unlock significant investments and[…]
Mortgage and Structured Finance
September 11, 2025 • 12 min read

A Welcome Revival: How EU Reforms Aim to Boost Securitisation & Implications for Insurer Demand

The European securitisation market is undergoing a major revival, driven by 2025 legislative proposals aimed at easing regulatory burdens, which we believe[…]
Mortgage and Structured Finance, Insurance Solutions

About the Mortgage and Structured Finance Team

Investors on the Mortgage and Structured Finance team

Alessandro Pagani, CFA
Portfolio Manager, Head of Mortgage and Structured Finance Team
Steve LaPlante, CFA
Portfolio Manager & Securitized Strategist
Barath Sankaran, CFA
Portfolio Manager
Ian Anderson
Portfolio Manager, Agency MBS Strategist
Jennifer Thomas
Portfolio Manager
Stephen L'Heureux, CFA
Portfolio Manager, Global Commercial Real Estate & CMBS Strategist
Michael Herald
Portfolio Manager, CLO Strategist
Alexandre Boulinguez
Mortgage and Structured Finance Portfolio Manager, Euro ABS
Keyur Vyas, PhD
Senior Mortgage & Structured Finance Analyst
Iris Tang, PhD, CFA
Senior Mortgage & Structured Finance Analyst
Vinnie Zhang, CFA
Senior Research Analyst
Amit Patel, CFA
Senior Mortgage & Structured Finance Analyst
Don Chaney, CFA
Director of Mortgage & Structured Finance Trading
Ahren Lippman, CFA
Senior Trader
Andre Ashook, CFA
Senior Trader
Carina Wang
Mortgage & Structured Finance Analyst and Trader
Ari Resnick
Investment Director
David Rittner, CFA
Investment Strategist