What Happens to Your Investments When the Market Crashes?
Market crashes feel catastrophic in the moment — but understanding what actually happens to your portfolio, and what investors who came out ahead did differently, changes everything.
Savvy Nickel
by Benjamin Graham & David Dodd
The foundational textbook of fundamental analysis, first published in 1934. Graham and Dodd created the discipline of security analysis from scratch, establishing the framework that professional analysts still use today.
*Disclosure: This article contains affiliate links. If you purchase through these links, we may earn a commission at no additional cost to you. We only recommend books we genuinely believe in.
First published in 1934 in the wreckage of the Great Depression, Security Analysis created the entire discipline of fundamental securities analysis. Graham and Dodd systematically explained, for the first time, how to evaluate a bond's safety, estimate a stock's intrinsic value, and identify the difference between investment and speculation. This is not casual reading. It is the graduate-level textbook that gave generations of professional investors their intellectual framework.
| Attribute | Details |
|---|---|
| Title | Security Analysis |
| Authors | Benjamin Graham & David Dodd |
| Publisher | McGraw-Hill |
| First Published | 1934 |
| Current Edition | 7th (2022) |
| Pages | ~800 |
| Reading Level | Advanced |
| Best For | Professional analysts and serious students |
Hardcover (7th Edition): Buy on Amazon
Hardcover (6th Edition): Buy on Amazon
Benjamin Graham (1894-1976) survived the 1929 crash, losing most of his investment fund's capital, and channeled that experience into building a systematic approach to security valuation. He taught at Columbia Business School for 28 years and is widely known as the father of value investing.
David Dodd (1895-1988) was Graham's teaching assistant at Columbia who became his co-author and eventually a full professor himself. The book grew from class notes they developed together in 1927-1934.
The 7th edition (2022) features commentary from modern value investors including Seth Klarman, Joel Greenblatt, Howard Marks, and others, bridging the 1934 framework to contemporary markets.
Security Analysis was written immediately after the 1929-1932 crash, during which the Dow Jones fell 89% and thousands of companies went bankrupt. The prevailing investment "wisdom" of the 1920s had been largely speculative. Graham and Dodd's radical contribution was to argue that securities could be analyzed systematically, that price and value were distinct, and that buying cheap assets with a margin of safety was a sustainable strategy.
Everything in modern fundamental analysis traces to this book:
Warren Buffett took Graham's class twice and has called this the most important investment book ever written, calling The Intelligent Investor the more readable version for general audiences.
Graham and Dodd open with the most important distinction in investing:
"An investment operation is one which, upon thorough analysis, promises safety of principal and an adequate return. Operations not meeting these requirements are speculative."
This three-part test changed finance:
| Criterion | Investment | Speculation |
|---|---|---|
| Thorough analysis | Required | Optional or absent |
| Safety of principal | Expected | Not guaranteed |
| Adequate return | Expected | Hoped for |
By this definition, buying a stock at 50x earnings without analyzing the business is speculation, regardless of whether it goes up or down. Buying a net-net stock at 60% of liquidation value after careful analysis is investment.
Graham identifies three purposes of security analysis:
Graham's central concept and the most influential idea in the book:
Intrinsic value is the value justified by the facts: assets, earnings, dividends, and definite prospects. It differs from market price. The analyst's job is to estimate intrinsic value and act when price diverges significantly.
Graham is careful to acknowledge that intrinsic value is a range, not a precise number. A stock can be clearly cheap, clearly expensive, or in a zone of uncertainty. The analyst should act only on clear cases.
This section, which occupies roughly a third of the book, is the most detailed analysis of bond safety ever written. Graham and Dodd analyze:
| Test | Adequate Coverage |
|---|---|
| Earnings coverage of interest (industrial) | 3x minimum, 5x preferred |
| Earnings coverage of interest (utility) | 2x minimum, 3x preferred |
| Earnings coverage of interest (railroad) | 1.75x minimum |
| Debt as % of capitalization (industrial) | Below 50% |
| Working capital ratio | Above 2:1 |
Seven-year earnings test: Graham requires that earnings be sufficient to cover interest charges not just in recent years but over a full business cycle, including recession years. A bond that passes only in good years does not pass.
Graham was skeptical of bond rating agencies even in 1934, arguing that their ratings often lagged market reality and that independent analysis was superior. This skepticism proved prescient in 2008 when AAA-rated mortgage securities defaulted massively.
Graham and Dodd analyze the hybrid securities that sit between bonds and common stocks. Their key insight: preferred stocks combine the worst features of both asset classes. They lack the contractual obligation of bonds (so the company can skip dividends) while lacking the upside participation of stocks.
The preferred stock trap:
| Feature | Bond | Preferred Stock | Common Stock |
|---|---|---|---|
| Contractual obligation | Yes | No | No |
| Priority in liquidation | First | Second | Last |
| Upside in good times | Limited | Limited | Unlimited |
| Safe in bad times | Generally | Not always | Rarely |
Graham's conclusion: preferred stocks belong only in institutional portfolios with specific income requirements. Individual investors are almost always better off with bonds for safety or common stocks for growth.
This is the section most relevant to modern investors. Graham and Dodd develop a systematic approach to stock valuation at a time when stocks were viewed primarily as speculative instruments.
Graham identifies two types of earnings:
Normal earnings: The average earning power of the business over a complete economic cycle (Graham recommends 7-10 years)
Current earnings: The most recent reported figure
Modern analysts typically focus on current or forward earnings. Graham argued this was dangerous because recent earnings reflect cyclical peaks and troughs. Normalizing earnings across a cycle produces more reliable valuations.
Example:
| Year | Actual EPS |
|---|---|
| 2015 | $3.20 |
| 2016 | $3.80 |
| 2017 | $4.50 |
| 2018 | $5.10 |
| 2019 | $4.80 |
| 2020 | $1.20 (recession) |
| 2021 | $5.50 |
| Average (7-year) | $4.01 |
Using the average $4.01 rather than the recent $5.50 produces a more conservative and cyclically adjusted valuation.
From Security Analysis, Graham derived a simple valuation formula that bears his name:
Graham Number = Square Root of (22.5 × EPS × Book Value Per Share)The 22.5 comes from Graham's maxim that a stock should not trade above 15x earnings and 1.5x book value simultaneously (15 × 1.5 = 22.5).
Example:
A stock trading below $51.96 passes Graham's basic valuation test.
Graham's most conservative valuation: buy stocks trading below their net-net working capital value.
NNWC = Current Assets - Total LiabilitiesIf a company has $10 per share in NNWC and trades at $7, you are buying the operating business for free. You receive the liquid assets at a 30% discount and get the factories, equipment, and business operations thrown in.
Historical returns of net-net investing:
| Study | Period | Annual Excess Return vs. Market |
|---|---|---|
| Graham-Newman | 1926-1956 | +20% per year |
| Oppenheimer (1970-1983) | 1970-1983 | +29% per year |
| Kok & Potgieter | Various international markets | +15-25% per year |
Net-net stocks are rare today in large developed markets. They exist regularly in smaller international markets and occasionally in U.S. micro-cap stocks.
Graham devotes substantial attention to the quality of reported earnings, presaging modern forensic accounting:
Warning signs of low earnings quality:
| Warning Sign | Concern |
|---|---|
| Earnings growing faster than cash flow | Possible accounting manipulation |
| Receivables growing faster than sales | Customers not paying; channel stuffing possible |
| Inventory growing faster than sales | Demand weakness; write-downs likely |
| EBITDA but not EBIT growing | Depreciation masking real costs |
| Frequent "special charges" | Ongoing costs disguised as one-time items |
The 2022 edition adds chapter-by-chapter commentary from prominent modern investors:
| Commentator | Perspective |
|---|---|
| Seth Klarman | Margin of safety in modern markets |
| Joel Greenblatt | Formula-based value investing |
| Howard Marks | Risk and market cycles |
| Glenn Greenberg | Concentrated value investing |
| Bruce Berkowitz | Asset-focused investing |
These commentaries are genuinely valuable for translating 1934 principles to current practice. Klarman's remarks on margin of safety are particularly important for understanding how the concept applies in today's information-rich environment.
For most investors: Read the Introduction and Part IV (Common Stocks). Skip the railroad bond analysis. Use the 7th edition for the modern commentary.
For serious students: Read cover to cover with a financial statements textbook nearby. Take notes. Apply the frameworks to real companies.
For professionals: Study the bond safety criteria and earnings quality sections especially. These remain among the most rigorous treatments available.
Q: Should I read this before or after *The Intelligent Investor*?
A: After. The Intelligent Investor is Graham's translation of Security Analysis into plain English for individual investors. Read it first, then return to Security Analysis when you want the full analytical framework.
Q: Which edition should I buy?
A: The 7th edition (2022) for the modern commentary. If budget is a concern, the 6th edition (2009) is also excellent. Avoid editions older than the 6th.
Q: Is Graham's net-net approach still viable?
A: In U.S. large caps, rarely. In U.S. micro-caps, occasionally. In Japan, South Korea, and certain other markets, it works regularly because asset-heavy companies often trade at discounts. Several value funds explicitly target international net-nets.
Rating: 4.6/5
Security Analysis is not for everyone, but for the serious student of investing it is irreplaceable. The intellectual framework it established for analyzing securities is the foundation upon which every subsequent development in fundamental analysis was built. Read it as a graduate text, not a casual guide, and it will transform your understanding of what investment analysis actually means.
Hardcover (7th Edition): Buy on Amazon
Hardcover (6th Edition): Buy on Amazon
Prices current as of publication date. Free shipping available with Prime.

by Benjamin Graham
The definitive guide to value investing. Benjamin Graham's masterwork teaches margin of safety, Mr. Market psychology, and the defensive vs. enterprising investor framework that has guided Warren Buffett and generations of wealth builders.

by Christopher Browne
Christopher Browne's concise guide to value investing from the managing partner of Tweedy, Browne Company — the firm that literally managed Benjamin Graham's brokerage accounts. A practical primer that distills decades of real-world value investing experience.

by Seth Klarman
Seth Klarman's legendary out-of-print value investing masterwork. Written in 1991 and never reprinted, used copies sell for $1,000+. This is the most rigorous modern treatment of risk-averse value investing available, distilling Graham's principles into a contemporary framework.
Market crashes feel catastrophic in the moment — but understanding what actually happens to your portfolio, and what investors who came out ahead did differently, changes everything.
A Roth IRA is the most powerful retirement account a teenager can have. Here's what it is, how it works, and why waiting even a few years costs you thousands.
FIRE — Financial Independence, Retire Early — has gone from fringe concept to mainstream goal. Here's what it actually takes, whether the math holds up, and who it realistically works for.