The podcast episodes discuss the principles of modern portfolio theory and how they contrast with the value investing approach championed by Warren Buffett.

In episode 57500, the guest Robert Hagstrom explains how Buffett's focus on business analysis, competitive advantages, capital allocation, and temperament differs from the diversification-based strategies of modern portfolio theory.

Similarly, episode 5172 references modern portfolio theory's emphasis on reducing portfolio risk through asset diversification as a key consideration for retirement investing success.