The Rational Reminder Podcast cover image

The Rational Reminder Podcast

Episode 346 - Hendrik Bessembinder: Why It's So Hard to Beat the Market

Feb 27, 2025
Join Hendrik Bessembinder, a finance professor at Arizona State University, as he uncovers why most stocks underperform Treasury bills. He reveals that a small number of stocks drive the majority of market returns, challenging traditional investing strategies. Listen in as he discusses the role of skewness, the complexities of mutual fund performance, and common investing mistakes. Learn how chasing past returns can lead to costly errors, and discover effective strategies for building a robust portfolio that endures market fluctuations.
01:03:06

Episode guests

Podcast summary created with Snipd AI

Quick takeaways

  • A small percentage of stocks are responsible for most market gains, revealing the limitations of relying solely on average returns.
  • Investing in small-cap stocks carries higher risks but offers the potential for outsized returns compared to larger firms.

Deep dives

Positive Skewness in Stock Returns

Positive skewness in stock returns indicates that a small number of stocks generate most of the market's returns, pulling the average above what most investors can expect. This phenomenon was highlighted in a key paper by Hendrik Bessembinder, revealing that only about 42% of stocks outperform Treasury bills over their lifetimes, while only 31% beat the overall market return. The research suggests that relying solely on the average returns can mislead investors, as the few high-performing stocks can skew the average significantly. This emphasizes the importance of diversification and understanding the distribution of returns rather than focusing solely on averages.

Remember Everything You Learn from Podcasts

Save insights instantly, chat with episodes, and build lasting knowledge - all powered by AI.
App store bannerPlay store banner