The investor library

Benjamin Graham

1894-1976 · Graham-Newman · The man who separated price from value.

Overview

Taught investing at Columbia from 1928 and wrote the book the discipline starts from. Buffett was his student, then worked for him. Almost every argument about what a share is worth still runs on vocabulary he invented.

“The investor's chief problem — and even his worst enemy — is likely to be himself.”

Benjamin Graham

Background

Born in London in 1894, brought to New York as an infant. His father died when he was nine and the family fell out of comfort quickly; the 1907 panic wiped out his mother's margin account, an experience he was still writing about fifty years later.

He was good enough at Columbia to be offered teaching positions in three departments — English, mathematics and philosophy — and went to Wall Street instead. He was ruined there once. Graham-Newman's predecessor account fell about 70% between 1929 and 1932, leveraged and early; he spent years working without pay to make clients whole. Security Analysis, published in 1934 with David Dodd, was written out of that.

Style, and how it evolved

Two questions, held apart. What a business is worth, and what the market happens to be charging for it today. Most commentary still runs them together; separating them is the foundation everything else rests on.

Margin of safety. Buy far enough below the estimate that being wrong about the estimate still leaves you whole. It is a statement about the fallibility of the analyst, not about the company.

Mr Market. The market as a manic-depressive counterparty who quotes you a price every day and whose mood tells you about the counterparty, not about the asset.

Net-nets, and deliberate impersonality. In practice he bought quantitatively — companies trading below net current asset value, dozens at a time, with no interest in their story or their management. Diversification was the mechanism that made a mediocre individual hit rate acceptable.

The evolution is startling and rarely mentioned. In a 1976 interview, months before his death, he said he no longer advocated elaborate security analysis: the profession had grown large enough that the inefficiencies he had exploited were mostly gone, and a simple rules-based approach would do as well for most people. The founder of the craft substantially recanted it.

Performance

paid offa decisiona losswalked awaythe lifeshaded columns are the crashes — hover any mark

Graham-Newman, 1936-1956: about 20% a year, against a market that returned roughly half that. ○ — the figure is repeated consistently, including by Buffett, but the precise number moves between sources depending on the treatment of the GEICO distribution.

The other number belongs on the same page: a drawdown of roughly 70% between 1929 and 1932 ✓.

✓ documented · ○ repeated consistently but the precise figure drifts between sources

Case studies

1926 — Northern Pipeline. Reading Interstate Commerce Commission filings that nobody else bothered with, Graham found that the company held railroad bonds worth about $95 a share while the stock traded around $65. Management refused to distribute them. He bought a large stake, went to the annual meeting, won a proxy fight and forced a distribution of about $70 a share. The mechanism: the entire edge was in a public document that was free to anyone willing to read it. ✓

1929-1932 — the ruin. He was long, he was leveraged, and he was early. The partnership lost roughly 70% and he did not recover it for years. The margin of safety is not an idea he derived from theory; it is the rule he wrote after being destroyed by its absence. ✓

1948 — GEICO. He paid about $712,000 for roughly half of a small private motor insurer — around a quarter of the fund, in a single illiquid, unlisted holding, in flat contradiction of the diversification his books require. It became worth many hundreds of times that. He never revised the rule, and he never pretended the result was consistent with it. ✓

The other side of the record

A record this good is where scepticism is most worth spending, so:

He blew up. The most famous framework for not losing money was written by someone who had just lost about 70% of his clients' capital. That is the strongest argument for the framework and simultaneously a warning: it did not protect him in real time, because he did not yet have it.

The mechanical form of the method is gone. Companies trading below liquidation value existed in quantity because information was scarce and screening was manual. They are now rare, small, and usually cheap for a reason. What survives is the disposition, not the screen.

He recanted. In 1976 he said the work was no longer worth doing at the level he had taught it. Any use of Graham as an authority has to reckon with the fact that he stopped being one on his own account.

His best result came from breaking his own rule, and he knew it. A framework whose author's largest success is a documented exception to it is not thereby wrong, but it is not the closed system it is usually presented as.

Buffett is routinely offered as evidence for Graham, and Buffett explicitly moved away from him — on Munger's urging, toward paying up for quality. Using the student's record to validate the teacher's method inverts what actually happened.

Key lessons

• What a business is worth and what it costs today are different questions. This is the distinction the whole discipline is built on and it still gets collapsed constantly.
• Mr Market's mood tells you about Mr Market. A price is a counterparty's opinion, not information about the asset.
• Margin of safety is humility, expressed as arithmetic. It prices the chance that your own estimate is wrong.
• The investor's chief problem, and his worst enemy, is likely to be himself.
• Read the document nobody reads. Northern Pipeline was won in a filing cabinet.

Reading and links

• The Intelligent Investor — 1949. Chapters 8 and 20 are the ones; much of the rest is of its time, and Graham would have said so.
• Security Analysis — 1934, with David Dodd. The technical work.
• The 1976 Financial Analysts Journal interview — short, and the most surprising thing he ever said.
• The Superinvestors of Graham-and-Doddsville — Buffett, 1984. The defence of the school, by its most famous defector.

Marked ✓ where the figure is documented and ○ where it is repeated consistently but drifts between sources. This is a profile of an investor, not a view on any security.

Primary sources

Go to the thing itself. These are the subject’s own publications or an institution’s own site. No bookseller links, and no referral arrangements — a reading list that earns per click is not a reading list.

• The Museum of American Finance's Graham materials

Profiles of investors, not views on any security, and not personal advice. Figures are marked ✓ where they are documented and ○ where they rest on secondary or private accounts — investing biography is heavily mythologised and the well-known numbers drift with each retelling. Capital is at risk.

Corrections and right of reply. Where a criticism is made of a named person it is stated as a specific measure over a stated period, attributed to its source, and separated from opinion. Assessments are opinion, honestly held, on facts believed accurate at the date shown. If anyone profiled here — or anyone acting for them — believes a fact is wrong, it will be corrected promptly and visibly, and a reply will be published alongside it on request.

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