The Little Book That Beats the Market

What is this book about?

Greenblatt lays out the “magic formula” in deliberately simple terms: rank companies by return on capital and by earnings yield, buy those that score well on both, and hold a diversified basket — replacing subjective judgment with systematic discipline. He is candid that the rule will visibly lag in some years.

Why read it?

Its value is less in the formula than in encoding both “good business” and “cheap price” into one executable rule, without hiding the years when the rule fails. That is a direct test of an investor’s patience.

Core Ideas

• High quality and low price must be satisfied at the same time; one alone is usually not enough.
• A mechanical rule reduces the interference of emotion in decisions.
• Diversification and persistence are prerequisites; underperformance in the short run is expected.
• A simple rule is easy to understand and therefore easy to abandon under stress — part of why it keeps working.

What questions does this book try to answer?

• Can a single simple rule screen for both quality and price?
• When the rule lags the market for years, what justifies continuing to follow it?

Who should read it?

For beginners, especially those curious about systematic stock selection. It is short and needs no financial background.