Security Analysis
The most technically demanding investment book ever written. A complete analytical framework for evaluating stocks and bonds: balance sheet analysis, income statement interpretation, margin of safety calculation. Buffett read it at 19 and followed it for 57 years. If The Intelligent Investor is the philosophy of value investing, Security Analysis is the engineering manual.
Railroad bonds, Depression-era balance sheets, and chapter after chapter of accounting built for a market that still printed net-nets. The bargains Graham teaches you to hunt were mostly arbitraged away generations ago, and The Intelligent Investor delivers the surviving philosophy at a quarter of the length. Reading it cover to cover is an act of devotion, and devotion is mostly what it rewards.
The case for it and the rest of the canon open with Pro.
