Planet Money Planet Money

How investing is getting riskier (Two Indicators)

Sep 16, 2026 · 18m

Summary

This episode examines the risks of margin trading, using a recent debt-fueled crash in South Korea as a cautionary tale for the U.S. market, where leverage has hit record highs. The show also explores the growing trend of Gen Z using sports betting as an investment strategy, highlighting behavioral finance insights on overconfidence. Additionally, it covers new Colorado legislation aimed at curbing gambling addiction by limiting credit card deposits and push notifications, offering a bipartisan approach to a novel public health challenge.

Topics discussed

Sponsorships and show introduction Explaining margin trading with a simple example Record US margin debt and today's episode overview Sponsorship breaks Margin debt vs credit card debt and forced selling Indian stock market study on margin trading instability South Korea's semiconductor boom and leveraged ETFs Korean market crash and margin calls for investors Impact on young investors and account liquidations Federal Reserve's role in regulating margin requirements Comparing current risk to past bubbles and Fed hesitation Transition to sports betting and prediction markets Sponsorship breaks Gen Z viewing sports betting as an investment strategy Psychology of gambling: overconfidence and economic frustration Case study: A 27-year-old's experience with bonus bets Risks to minors and the difference between sportsbooks and prediction markets Colorado's new laws adding friction to sports betting Rationale for deposit limits and testing new regulations Bipartisan support and state-to-state adoption of new rules Long-term behavioral changes and learning from losses Book promotion, credits, and final sponsorships
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