Biography

David Rittner is an Investment Strategist for the Mortgage and Structured Finance Team at Loomis, Sayles & Company. He is responsible for aiding the fixed income product teams in constructing and implementing optimal strategies across all segments on securitized assets.

David joined Loomis Sayles in 2021 as a Senior Investment Analyst and was promoted to Investment Strategist in 2023. He has 14 years of investment industry experience. Previously, David was an assistant vice president and fixed income portfolio analyst at Wellington Management, where he helped manage structured finance securities across core, core plus and unconstrained bond funds, generating strategic relative value trades across the capital stack in ABS, CMBS and RMBS. Prior to this, he was an investment associate at JP Morgan Asset Management, where he performed research, traded and managed structured finance bonds for the firm’s absolute return fixed income strategy.

David earned a BS in Economics from the Wharton School of the University of Pennsylvania. He is a CFAĀ® charterholder.

CFAĀ® and Chartered Financial AnalystĀ® are registered trademarks owned by the CFA Institute.

Latest Insights by David Rittner, CFA

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
Alpha Engine Perspectives The Federal Student Loan Repayment Reckoning: The Consumer ABS Risk Driver Investors May Be Overlooking
June 5, 2025 • 6 min read

The Federal Student Loan Repayment Reckoning: The Consumer ABS Risk Driver Investors May Be Overlooking

Investment Strategist David Rittner and Senior Research Analyst Amit Patel take a look at a key risk factor for structured credit investors:[…]
Mortgage and Structured Finance

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
SƩbastien AndrƩ
Mortgage and Structured Finance Portfolio Manager, Euro ABS
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