What investing books do billionaires read?
In one paragraph
The Intelligent Investor by Benjamin Graham is the book Warren Buffett has called "the best book about investing ever written" — he has cited it as foundational to his entire career. Charlie Munger, Bill Gates, and other high-net-worth investors have pointed to books on mental models and business history rather than trading tactics.
What this actually means
A few books appear consistently across lists of what serious long-term investors and self-made billionaires reference.
The Intelligent Investor is the most cited. Warren Buffett first read it at age 19 and later studied under Graham at Columbia. The core concepts — buying businesses below their intrinsic value, treating market fluctuations as opportunities rather than signals, demanding a margin of safety — shaped Berkshire Hathaway's entire approach. Buffett calls Chapter 8 (Mr. Market) and Chapter 20 (margin of safety) the most important chapters in the book.
Poor Charlie's Almanack, which compiles Charlie Munger's speeches and mental models, is also widely cited. Munger's framework — building a "latticework of mental models" from disciplines including psychology, mathematics, and history — influenced how a generation of investors think about decision-making under uncertainty.
Common Stocks and Uncommon Profits by Philip Fisher is another Buffett staple. Where Graham is quantitative (buy cheap), Fisher is qualitative (buy great businesses). Buffett has described his investment style as "85% Graham, 15% Fisher."
What billionaires tend NOT to read: day-trading books, technical analysis manuals, or get-rich-quick systems. The pattern across serious long-term investors is a focus on understanding businesses, understanding human psychology, and holding positions long enough to let compounding work — not on finding tactical edges in price charts.
For most readers, The Intelligent Investor is the natural starting point in this lineage. It is demanding but accessible with Zweig's commentary, and it covers the same intellectual territory Buffett built a career on.
