Security Analysis (the book)
medium confidence — compiled with source citation from the investment brain.
Security Analysis (the book)
Security Analysis (the book)
Security Analysis is the 1934 book by benjamin-graham and David L. Dodd that founded the discipline of value investing, and the origin text for several of this wiki's core concepts. It is a source gap in this corpus: no raw copy of the book itself exists yet (the text is under copyright and awaits Dom's PDFs). This page therefore records only how the letters and memos reference the book, and should be back-filled with direct citations once the book is ingested. Its companion volume, The Intelligent Investor (1949), is drawn on through the same references.
What the book is, by reputation
Buffett's 1988 letter memorializes the co-author: "Dave spent a lifetime teaching at Columbia University, and he co-authored Security Analysis with Ben Graham", adding that everything Dodd taught him "directly or through his book, made sense." The 2012 letter places it at the top of the canon, ranking it "behind only The Intelligent Investor and the 1940 edition of Security Analysis in the all-time-best list for the serious investor."
howard-marks independently gives it the same standing, calling Benjamin Graham and David L. Dodd's Security Analysis "the bible of value investing."
The concepts the letters trace to it
Buffett attributes his foundational principles to the Graham & Dodd tradition. The margin of safety, the Mr. Market parable (from The Intelligent Investor), and the price-versus-value distinction all flow from it. See margin-of-safety and mr-market. Marks retells the Mr. Market story directly from the Graham source, noting that Graham "introduced a fellow he called Mr. Market" in The Intelligent Investor, and that "his miscalculations provide profit opportunities to investors interested in taking advantage of them."
The book's influence is as much dispositional as technical. Buffett returns repeatedly to a single frontispiece quotation, credited to Horace. The 2001 letter renders the lines: "Many shall be restored that now are fallen and many shall fall that now are in honor." Fifty-two years after first reading them, Buffett says his appreciation for what they say about business and investment continues to grow. That cyclical humility is the same sensibility Marks develops under cycles and permanent-loss-of-capital.
The discipline of relative selection
Marks records a further inheritance through Sidney Cottle, editor of the later editions: "the discipline of relative selection" — the idea that most portfolio decisions are relative choices, not absolute judgments. The framing connects the book to Marks's own second-level reasoning about what a security offers relative to its alternatives. See second-level-thinking.
Gap and scope
Until the raw text is ingested, claims here are second-hand — the letters and memos describing
the book, not the book itself. Confidence is therefore marked medium, and direct quotations
should be added from raw/textbooks/ once Security Analysis is converted. The canonical
concepts it seeds — intrinsic-value, margin-of-safety, and the
voting-versus-weighing distinction of mr-market — are covered on their own pages.
See also
Sources
berkshire-hathaway/Letters-Markdown/1988 - Letter to Shareholders.mdberkshire-hathaway/Letters-Markdown/2012 - Letter to Shareholders.mdhoward-marks/Memos-Markdown/Selling Out.mdhoward-marks/Memos-Markdown/Mr. Market Miscalculates.mdberkshire-hathaway/Letters-Markdown/2001 - Letter to Shareholders.md