Biography

Sébastien André is a Portfolio Manager on the 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, Sébastien 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, Sébastien was a credit risk manager at CDC IXIS Asset Management Advisors. He began his career as a business analyst at Carat France. Sébastien 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 Sébastien André

Alpha Engine Perspectives
September 18, 2026 • 12 min read

Solvency II Reform: Why European Insurers Should Revisit Securitised Credit

Solvency II reform cuts capital charges on senior European securitisations by up to 78% starting January 2027, reshaping the case for insurer[…]
Structured Finance, Insurance Solutions
Alpha Engine Perspectives
May 5, 2026 • 16 min read

European ABS: A Generational Allocation Shift?

European ABS markets are on the verge of a generational shift. In a new article from Natixis Investment Managers, Sébastien André, Euro[…]
Structured Finance
Alpha Engine Perspectives
May 5, 2026 • 15 min read

European ABS: No Losses for a Quarter Century and a Proven Inflation-Buster

Volatility and inflation pose significant challenges for investors today. In a new article for Natixis Investment Managers, Sébastien André, Euro ABS Portfolio[…]
Structured Finance