The Retirement Black Box: Decoding the Hidden Architecture of Target-Date Funds

The Retirement Black Box: Decoding the Hidden Architecture of Target-Date Funds

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Author/Contributor(s): Leite, Brian
Publisher: Advantage Books
Date: 1/5/2027
Binding: Hardcover
Condition: NEW
Most retirement investors never choose their asset allocation. It is chosen for them.

In today’s defined contribution plans, target date funds function as default investments, guiding trillions in savings through a pre-set retirement investing strategy. But these funds are not standardized. Behind identical labels lie meaningful differences in glidepath design, asset allocation, and fees—differences that can significantly alter outcomes.

The Retirement Black Box examines these hidden structures and their implications for fiduciary responsibility. Dr. Brian Leite explains how QDIA investments embed specific assumptions about markets, participant behavior, and risk—and how those assumptions play out over time.

The book provides a clear framework for retirement plan governance, helping fiduciaries evaluate 401k default investments with greater precision. It also addresses the realities of ERISA oversight, where investment committee decisions must be documented, justified, and defensible.

With a focus on retirement risk management and investment committee oversight, this book is designed for professionals who need more than surface-level understanding. It offers practical tools, real-world examples, and a disciplined approach to assessing target date funds in context.