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Walter's Research Briefs episodes
- Modern Wisdom: Martin Seligman on stopping negative thoughts (summary)
A breakdown of Martin Seligman's appearance on Modern Wisdom, examining how learned optimism and positive psychology challenge traditional views on human thinking. The episode explores evidence-based techniques to combat catastrophic thoughts and delves into Seligman's three-part framework for human agency.
9 min - Excess Returns: Brian Portnoy on how finance pros invest their own money (summary)
Discover how 25 finance professionals manage their own savings as Brian Portnoy discusses insights from How I Invest My Money, Volume Two. The summary explores why real-world portfolios favor peace of mind, high cash buffers, and behaviorally optimal strategies over theoretical spreadsheets.
8 min - Odds on Open: David Orr on why investing is 99% talent (summary)
A breakdown of hedge fund manager David Orr's discussion on why outsized investing performance relies almost entirely on innate talent rather than pedigree. The episode explores his unconventional approach to backing outside managers, managing a 400% levered portfolio across 500 positions, and using AI-driven risk systems to monitor correlation.
8 min - Infinite Loops: Spencer Greenberg on 106 Self-Help Books, 12 Levers (summary)A short summary of Infinite Loops Ep. 333, where Jim O'Shaughnessy talks with Spencer Greenberg about The 12 Levers. They cover which self-help techniques hold up to evidence, including exposure therapy, behavioral activation and exercise, where the law of attraction and best-seller pitches go wrong, memory as autocomplete, structured hiring interviews, replication and importance hacking, and mind-body pain.8 min
- Grupo Purdy: From Toyota Distributor to Mobility Group
A deep dive into Grupo Purdy, from its 1957 Toyota roots to today’s multi-brand mobility business. We cover the Quirós family’s control and Toyota Tsusho’s 25% stake, Purdy’s businesses and recent expansion, and what’s known about its finances, strategy, and board.
20 min
About Walter's Research Briefs
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On-demand research audio for Walter — markets, health, and one-off topics. Episodic, not a daily show.