Jul 3, 2025

In this episode, we’re joined by Martijn Cremers, Dean of the Mendoza College of Business at the University of Notre Dame and co-author of the groundbreaking 2009 paper that introduced the concept of Active Share. Martijn brings fresh nuance to the long-standing debate over active versus passive...

Jun 26, 2025

What if holding just a few “winning” stocks is riskier than it seems? In this episode, Ben and Cameron explore the hidden dangers of concentrated portfolios and unpack the data that makes a strong case for diversification. Drawing from research by Hendrik Bessembinder, J.P. Morgan, and others, Ben lays out the...

Jun 19, 2025

What if the hardest part of investing isn’t building a portfolio—but sticking to it? In this AMA edition of the Rational Reminder podcast, Ben Felix and Dan Bortolotti tackle listener questions ranging from sustainable retirement withdrawals to the dangers of structured products, with plenty of philosophical...

Jun 12, 2025

Today, Ben plays lone host for the first time as we welcome Alex Edmans to the show. Alex is a Professor of Finance at London Business School as well as an accomplished speaker, author, investment banker, and financial advisor. To start, Alex describes his involvement in the formation of a new law in the UK before...

Jun 5, 2025

What if “just buying the market” isn’t the end of the story? In this episode, we are joined by Gerard O’Reilly, Co-CEO and Co-CIO of Dimensional Fund Advisors, for a deep dive into what really drives net investment returns. Gerard returns to the Rational Reminder podcast to explain the key principles...