Margin of Safety Concept as explained by Warren Buffett

The margin of safety has little to do with price but more to do with the quality of the business (durable competitive advantage and economic moat) and its management.

Buffett:   "In investing in securities, you can change your mind tomorrow and sell it if you feel you have made a mistake. When you buy a business, we buy businesses to keep. So .. our margin of safety is not in the price we pay .. it's in crossing the threshold of being virtually certain of buying into a business with durable competitive advantage, that is, one with good economics ... and we are buying in into people with a passion for the business and who are going to run it in the same way the year after they sold it to us the year that they run it the year before. So our margin of safety gets more into the qualitative characteristics than the quantitative aspects that you probably refer to in terms of the Ben Graham's standard of buying a business for .... he would say buy a stock .. if you think a stock is worth $10 .. don't pay $9.90 for it but $8.00 or something like that. When you are buying businesses, it's a different criteria, you are buying to keep and you better make sure that you are buying both the businesses that you like 10 or 20 years from now and the management that you are going to love 10 or 20 years from now.

We don't look for specific sectors, but we do look at businesses that I can understand. That means where I feel I have a high degree of confidence in my ability to see what they are going to look like 5, 10 and 20 years from now. It isn't that I don't understand, say the software product in general of the Microsoft but I don't know how that industry is going to develop 10 or 20 years. I didn't know that Google was going to come along in terms of search .. and all kind. So, anything that is rapidly developing, has lots of change embodied in it, by my definition, I won't understand. It may do wonders for society. It may have what appears to have a bright future, but I don't bring anything to that game that I know. Not only I don't know more that the other fellow, I do not know as much as the other fellow in evaluating what the industry will look like in 10 years. So, besides the things I look at businesses are reasonably easy to evaluate where the products .. how they will fit in with the economic picture .. how their economics will look in the 5, 10 or 20 years period. (2.40 minute)...Take an extreme example, I can understand Nestle ............................."

Risk versus Safety

MARGIN OF SAFETY - Seth A. Klarman

MARGIN OF SAFETY
Risk-Averse Value Investing Strategies for the Thoughtful Investor
Seth A. Klarman


http://www.my10000dollars.com/MS.pdf

Ben Graham: The chief losses to investors come from the purchase of low-quality securities at times of favorable business conditions.

The high CAGR in the early years of the investing period, due to buying at a discount, tended to decline and approach that of the intrinsic EPS GR of the companies over a longer investment time-frame.

Chapter 20 - “Margin of Safety” as the Central Concept of Investment

A single quote by Graham on page 516 struck me:

Observation over many years has taught us that the chief losses to investors come from the purchase of low-quality securities at times of favorable business conditions.

Basically, Graham is saying that most stock investors lose money because they invest in companies that seem good at a particular point in time, but are lacking the fundamentals of a long-lasting stable company.

This seems obvious on the surface, but it’s actually a great argument for thinking more carefully about your individual stock investments. If most of your losses come from buying companies that seem healthy but really aren’t, isn’t that a profound argument for carefully studying any company you might invest in?

Margin of Safety Concept: Stocks should be bought like groceries, not like perfume

Graham was most insistent that any security purchased should represent good value. He felt stocks should be bought like groceries, not like perfume, and he distilled his investment philosophy down to just three words, "MARGIN OF SAFETY".

By margin of safety, he meant that any stock bought should be worth considerably more than it costs. He sometimes suggested at least 50 percent more. Stocks bought with a margin of safety give some assurance that one has invested wisely. And stocks bought with a margin of safety should be low risk, high return investments.

How to Calculate Margin of Safety in Stock Investing

In this article you will find information about what is margin of safety, decide which methods to use and various methods to derive safety margin for each stock.

You will also find information about how safety margin relates to intrinsic value and why 52-weeks historical data is important.

What is Margin of Safety

It was first introduced by Benjamin Graham and David Dodd in 1934. It is basically the difference between the intrinsic value and the stock price. The objective is to determine whether the stock price worth its valuation.

It able to protect stock investors from inaccurate decision making or unexpected downturn in the market. As it is impossible to determine the true value of the company, this safety margin allow investment decision to be made with limited downside.

There are so many methods in determining company’s fair value from margin of safety principle. Here I list the simple ones that are easy and convenient, but as workable as those methods that are complicated. In any case, nobody knows exactly what the company worth for.

How to Determine Margin of Safety

First Method: Discounting the intrinsic value

This is simply discounting the calculated intrinsic value. You can use any discount rate, but 20 to 30 per cent works fine with me.

For example, you find that the intrinsic value for stock GE is $50 and are currently traded at $38. After applying 20 per cent discount, the fair value is $40 (20 per cent discount from $50).

So, current price at $38 is still lower than the discounted intrinsic value. In this case, it is safe for me to buy the stock today.

While Warren Buffet likes to invest in companys that is 50 per cent discounted intrinsic value, Mason Hawkins at Longleaf Partners says his group looks for businesses trading at 60% or less of intrinsic value.

So it is up to you how much you are comfortable with.

Second Method: Comparing with 52-weeks historical prices

To do this, you need to first calculate the difference between 52-week high and low prices, then multiply it with 40 per cent. Then add back to the 52-week low price.



For example, for the last 52-weeks, GE was traded between $32 and $39.5. The difference between 52-week high and low prices is $7.5 ($39.5-$32) and 40 per cent of the difference is $3. Its fair value will be $35 ($32+$3). In this case, as the stock price is still higher than the fair value, it is still not safe to buy it today.
Confused?

Decide Which Methods to Use

How can the first method makes the current price safe to buy but not with the second method?This is not weird. If this happens, it is either:

• you are too optimist with the its EPSGR (result to high future value and high intrinsic value),
• you are expecting very low ROI (result to very high intrinsic value), or
• the stock price is too high from it latest profits announcement etc (more gap between its fair value to current stock price.

The best is, use both and choose whichever is lower. Other than these two methods, I used the third method as well.

It known as sensitivity study. It is not as easy calculation as before, but sort of complementing those two methods.

http://www.stock-investment-made-easy.com/margin-of-safety.html

The Right Attitude to Value Investing

Value investing is based more on philosophy than on theorems.  Benjamin Graham's purpose was to make his students use the deductive process to think for themselves.

The three key concepts of Benjamin Graham's value investing are:

• Having the right attitude
• The importance of margin of safety
• Knowing the Intrinsic value.

To be successful, a value investor must adopt the right attitude toward investing in general, and an aversion to speculation in particular.  A speculation is not an investment.  Graham insisted, and it is crucial to be able to distinguish between the two.

Graham frowned upon market timing.  He insisted that any financial decision based solely on the prediction that the market will move up or down is a speculation.

Margin of safety

The margin of safety is the difference between the intrinsic value of a security and its current market price.

Expanded Definition
Benjamin Graham and David Dodd coined the term "margin of safety" in their 1936 book., Security Analysis. It was also featured in Graham's The Intelligent Investor.

Value investing, which was first described by Graham and Dodd, seeks to buy companies at a discount to their intrinsic value. But a company's intrinsic value, which judges not just the current value of the company but the future value of the company, depends on several variables that can at best be estimated. Therefore, the value investor builds in a margin of safety: the difference between the company's intrinsic value and the market value that would have to exist before the value investor would trust that he or she was truly buying at a discount.

For example, in order to buy a particular security, an investor might require that the market price be 30% below the intrinsic value. This margin of safety would ensure that, even if his calculated intrinsic value were wrong, he would likely not have overpaid.

The margin of safety, in other words, is a way of managing the risk inherent in valuing and buying securities. Investors will often require a smaller margin of safety from an established company with a competitive advantage, for example, than for one in a new and growing industry. As Warren Buffett once quipped, "It is better to be approximately right than precisely wrong."

Example
If shares of Danneskjöld Repossessions (Nasdaq: FAKE) currently trade for $75, but the intrinsic value of the shares is $100, then the margin of safety is 25%. On a related note, the potential upside on the shares is 33%.


http://wiki.fool.com/Margin_of_safety?source=iabsitlnk0000001

When to Buy Any Stock: Consider Margin of Safety

Having computed intrinsic value of a stock, we know that a stock should be purchased only if the market price is below the stock's intrinsic value.

"How MUCH lower should the price be relative to the intrinsic value?"

Think of the margin of safety for any stock as the difference between a stock's intrinsic value and its market price.

If you buy a stock at its intrinsic value, you will have no margin of safety.  

• If everything goes as you assume in your calculations, you will earn an annual rate of return equivalent to the discount rate assumed.
• For example, if you assume a discount rate of 7 percent and purchase the stock at intrinsic value, your annual rate of return will be 7 percent.  

If the same stock is purchased at 25 percent below the intrinsic value, 

• the calculations show that the rate of return will be about 10 percent per year.  

And if the stock is at half the intrinsic value, 

• the rate of return will be about 15 percent.  

So it seems logical that you should buy a stock with a large margin of safety.

An alternate way of thinking about looking for a large margin of safety is to require a large discount rate.

Related posts:

Intelligent Investor Chapter 20: Margin of Safety as the Central Concept of Investment

The Intelligent Investor: “Margin of Safety” as the Central Concept of Investment

Value Investing: Provide a Margin of Safety

Everything Buffett Needs to Know, He Learned Right Here

****Price to Earnings Growth Ratio (PEG) Explanation

A great company can be a lousy investment. Always incorporate a margin of safety.

Buying when the price is right.

Margin of Safety as the Central Concept of Investment – Summary

Investment is most intelligent when it is most businesslike.

• It is amazing to see how many capable businessmen try to operate in Wall Street with complete disregard of all the sound principles through which they have gained success in their own undertakings.
• Yet every corporate security may best be viewed, in the first instance, as an ownership interest in, or a claim against, a specific business enterprise.
• And if a person sets out to make profits from security purchases and sales, he is embarking on a business venture of his own, which must be run in accordance with accepted business principles if it is to have a chance of success.
  
  

The first and most obvious of these principles is, “Know what you are doing – know your business.”

• For the investor this means: Do not try to make “business profits" out of securities – that is, returns in excess of normal interest and dividend income – unless you know as much about security values as you would need to know about the value of merchandise that you proposed to manufacture or deal in.
  

A second business principle: “Do not let anyone else run your business, unless (1) you can supervise his performance with adequate care and comprehensive or (2) you have unusually strong reasons for placing implicit confidence in his integrity and ability.”

• For the investor this rule should determine the conditions under which he will permit someone else to decide what is done with his money.
  

A third business principle: “Do not enter upon an operation – that is, manufacturing or trading in an item – unless a reliable calculation shows that it has a fair chance to yield a reasonable profit.

• In particular, keep away from ventures in which you have little to gain and much to lose.”
• For the enterprising investor this means that his operations from profit should be based not on optimism but on arithmetic.
• For every investor it means that when he limits his return to a small figure – as formerly, at least, in a conventional bond or preferred stock – he must demand convincing evidence that he is not risking a substantial part of his capital.
  

A fourth business rule is more positive: “Have the courage of your knowledge and experience. If you have formed a conclusion from the facts and if you know your judgement is sound, act on it – even though others may hesitate or differ.”

• (You are neither right nor wrong because the crowd disagrees with you. You are right because your data and reasoning are right.)
• Similarly, in the world of securities, courage becomes the supreme virtue after adequate knowledge and a tested judgement are at hand.
  

Fortunately for the typical investor, it is by no means necessary for his success that he bring these qualities to bear upon his program – provided he limits his ambition to his capacity and confines his activities within the safe and narrow path of standard, defensive investment.

• To achieve satisfactory investment results is easier than most people realize; to achieve superior results I harder than it looks.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety and Unconventional Investments

Margin of Safety and Unconventional Investments - Extension of the Concept of Investment

Investment can be further distinguished between conventional and unconventional investments.
Conventional investments are appropriate for the typical portfolio.

• Under this heading have always come US government issues and high-grade, dividend-paying common stocks.
• We have added state and municipal bonds for those who will benefit sufficiently by their tax-exempt features.
• Also included are first-quality corporate bonds when, as now, they can be bought to yield sufficiently more than US savings bonds.
  

Unconventional investments are those that are suitable only for the enterprising investor. They cover a wide range.

• The broadest category is that of undervalued common stocks of secondary companies, which we recommend for purchase when they can be bought at two-thirds or less of their indicated value.
• Besides these, there is often a wide choice of medium-grade corporate bonds and preferred stocks when they are selling at such depressed prices as to be obtainable also at a considerable discount from their apparent value.
• In these cases, the average investor would be inclined to call the securities speculative, because in his mind their lack of a first-quality rating is synonymous with a lack of investment merit.
  

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1. It is our argument that a sufficiently low price can turn a security of mediocre quality into a sound investment opportunity – provided that the buyer is informed and experienced and that he practices adequate diversification.
2. For, if the price is low enough to create a substantial margin of safety, the security thereby meets our criterion of investment.
3. Our favourite supporting illustration is taken from the field of real-estate bonds.

• In the 1920s, billions of dollars’ worth of these issues were sold at par and widely recommended as sound investments.
• A large proportion had so little margin of value over debt as to be in fact highly speculative in character. In the depression of the 1930s, an enormous quantity of these bonds defaulted their interest, and their price collapsed – in some cases below 1 cents on the dollar.
• At that stage the same advisers who had recommended them at par as safe investments were rejecting them as paper of the most speculative and unattractive type.
• But as a matter of fact, the price depreciation of about 90% made many of these securities exceedingly attractive and reasonably safe – for the true values behind them were four or five times the market quotation.
• (Graham is saying that there is no such thing as a good or bad stock; there are only cheap stocks and expensive stocks. Even the best company becomes a “sell” when its stock price goes too high, while the worst company is worth buying if its stock goes low enough.)
• The fact that the purchase of these bonds actually resulted in what is generally called “a large speculative profit” did not prevent them from having true investment qualities at their low prices.
• The “speculative” profit was the purchaser’s reward for having made an unusually shrewd investment.
• They could properly be called investment opportunities, since a careful analysis would have shown that the excess of value over price provided a large margin of safety.
• Thus, the very class of “fair-weather investments” which we stated above is a chief source of serious loss to naïve security buyers is likely to afford many sound profit opportunities to the sophisticated operator who may buy them at pretty much his own price.
• [Wall Street’s analysts have always tended to call a stock a “strong buy” when its price is high, and to label it a “sell” after its price has fallen – the exact opposite of what Graham (and simple common sense) would dictate.]
• [As he does throughout the book, Graham is distinguishing speculation – or buying on the hope that a stock’s price will keep going up – from investing, or buying on the basis of what the underlying business is worth.]

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The whole field of “special situations” would come under our definition of investment operations, because the purchase is always predicated on a thoroughgoing analysis that promises a larger realization than the price paid.

Again there are risk factors in each individual case, but these are allowed for in the calculations and absorbed in the overall results of a diversified operation.

----

To carry this discussion to a logical extreme, we might suggest that a defensive investment operation could be set up by buying such intangible values as are represented by a group of “common stock option warrants” selling at historically low prices. (This example is intended as somewhat of a shocker.)

1. The entire value of these warrants rests on the possibility that the related stocks may some day advance above the option price. At the moment they have no exercisable value.
2. Yet, since all investment rests on reasonable future expectations, it is proper to view these warrants in terms of the mathematical chances that some future bull market will create a large increase in their indicated value and in their price.
3. Such a study might well yield the conclusion that there is much more to be gained in such an operation than to be lost and that the chances of an ultimate profit are much better than those of an ultimate loss.
4. If that is so, there is a safety margin present even in this unprepossesing security form.
5. A sufficiently enterprising investor could then include an option-warrant operation in his miscellany of unconventional investments.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety as a Criterion of Investment versus Speculation

Margin of Safety concept can be used to distinguish an investment from a speculation

1. Since there is no single definition of investment in general acceptance, authorities have the right to define it pretty much as they please. Many of them deny that there is any useful or dependable difference between the concepts of investment and of speculation.
2. We think this skepticism is unnecessary and harmful. It is injurious because it lends encouragement to the innate leaning of many people toward the excitement and hazards of stock-market speculation. We suggest that the margin-of-safety concept may be used to advantage as the touchstone to distinguish an investment operation from a speculative one.
3. Probably most speculators believe they have the odds in their favour when they take their chances, and therefore they may lay claim to a safety margin in their proceedings.
4. Each one has the feeling that the time is propitious for his purchase, or that his skill is superior to the crowd’s, or that his adviser or system is trustworthy.
5. But such claims are unconvincing. They rest on subjective judgement, unsupported by any body of favourable evidence or any conclusive line of reasoning.
6. We greatly doubt whether the man who stakes money on his view that the market is heading up or down can ever be said to be protected by a margin of safety in any useful sense of the phrase.
7. By contrast, the investor’s concept of the margin of safety – as developed earlier in this chapter – rests upon simple and definite arithmetical reasoning from statistical data. We believe, also, that it is well supported by practical investment experience.
8. There is no guarantee that this fundamental quantitative approach will continue to show favourable results under the unknown conditions of the future. But, equally, there is no valid reason for pessimism on this score.
9. Thus, in sum, we say that to have a true investment there must be present a true margin of safety.
10. And a true margin of safety is one that can be demonstrated by figures, by persuasive reasoning, and by reference to a body of actual experience.

Ref: Intelligent Investor by Benjamin Graham

Margin of safety and the principle of diversification.

1. There is a close logical connection between the concept of a safety margin and the principle of diversification. One is correlative with the other.
2. Even with a margin in the investor’s favour, an individual security may work out badly. For the margin guarantees only that he has a better chance for profit than for loss – not that loss is impossible.
3. But as the number of such commitments is increased the more certain does it become that the aggregate of the profits will exceed the aggregate of the losses. That is the simple basis of the insurance-underwriting business.
4. Diversification is an established tenent of conservative investment.
5. By accepting it so universally, investors are really demonstrating their acceptance of the margin-of-safety principle, to which diversification is the companion.
6. This point may be made more colourful by a reference to the arithmetic of roulette.

• If a man bets $1 on a single number, he is paid $35 profit when he wins – but the chances are 37 to 1 that he will lose. (In “American” roulette, most wheels include 0 and 00 along with numbers 1 through 36, for a total of 38 slots.)
• He has a “negative margin of safety.” In his case, diversification is foolish.
• The more numbers he bets on, the smaller his chance of ending with a profit. If he regularly bets $1 on every number (including 0 and 00), he is certain to lose $2 on each turn of the wheel.
• But suppose the winner received $39 profit instead of $35.
• Then he would have a small but important margin of safety. Therefore, the more numbers he wagers on, the better his chances of gain.
• And he could be certain of winning $2 on every spin by simply betting $1 each on all the numbers.
• (Incidentally, the two examples given actually describe the respective positions of the player and proprietor of a wheel with 0 and 00.)

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to undervalued or bargain stocks.

1. The margin-of-safety idea becomes much more evident when we apply it to the field of undervalued or bargain securities.
2. We have here, by definition, a favourable difference between price on the one hand and indicated or apprised value on the other. That difference is the safety margin.
3. It is available for absorbing the effect of miscalculations or worse than average luck.
4. The buyer of bargain issues places particular emphasis on the ability of the investment to withstand adverse developments.
5. For in most such cases he has no real enthusiasm about the company’s prospects.
6. True, if the prospects are definitely bad the investor will prefer to avoid the security no matter how low the price.
7. But the field of undervalued issues is drawn from the many concerns – perhaps a majority of the total – for which the future appears neither distinctly promising nor distinctly unpromising.
8. If these are bought on a bargain basis, even a moderate decline in the earning power need not prevent the investment from showing satisfactory results. The margin of safety will then have served its proper purpose.


Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to growth stocks.

1. The philosophy of investment in growth stocks parallels in part and in part contravenes the margin-of-safety principle.
2. The growth-stock buyer relies on a expected earning power that is greater than the average shown in the past. Thus he may be said to substitute these expected earnings for the past record in calculating his margin of safety.
3. In investment theory there is no reason why carefully estimated future earnings should be a less reliable guide than the bare record of the past; in fact, security analysis is coming more and more to prefer a competently executed evaluation of the future.
4. Thus the growth-stock approach may supply as dependable a margin of safety as is found in the ordinary investment – provided the calculation of the future is conservatively made, and provided it shows a satisfactory margin in relation to the price paid.
5. The danger in a growth-stock program lies precisely here. For such favoured issues the market has a tendency to set prices that will not be adequately protected by a conservative projection of future earnings. (It is a basic rule of prudent investment that all estimates, when they differ from past performance, must err at least slightly on the side of understatement.)
6. The margin of safety is always dependent on the price paid. It will be large at one price, small at some higher price, nonexistent at some still higher price.
7. If, as we suggest, the average market level of most growth stocks is too high to provide an adequate margin of safety for the buyer, then a simple technique of diversified buying in this field may not work out satisfactorily.
8. A special degree of foresight and judgment will be needed, in order that wise individual selections may overcome the hazards inherent in the customary market level of such issues as a whole.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to common stocks.

The margin of safety concept as applied to “fixed-value investments” can also be carried over into the field of common stocks, but with some necessary modifications.


1. However, the risk of paying too high a price for good-quality stocks – while a real one – is not the chief hazard confronting the average buyer of securities.
2. Observation over many years has taught us that the chief losses to investors come from the purchase of low-quality securities at times of favourable business conditions. The purchasers view the current good earnings as equivalent to “earning power” and assume that prosperity is synonymous with safety.
3. It is in those years that bonds and preferred stocks of inferior grade can be sold to the public at a price around par, because they carry a little higher income return or a deceptively attractive conversion privilege.
4. It is then also, that common stocks of obscure companies can be floated at prices far above the tangible investment, on the strength of two or three years of excellent growth.
5. These securities do not offer an adequate margin of safety in any admissible sense of the term. Coverage of interest charges and preferred dividends must be tested over a number of years, including preferably a period of subnormal business such as in 1970-71. The same is ordinarily true of common-stock earnings if they are to qualify as indicators of earning power.
6. Thus it follows that most of the fair-weather investments, acquired at fair-weather prices, are destined to suffer disturbing price declines when the horizon clouds over – and often sooner than that.
7. Nor can the investor count with confidence on an eventual recovery – although this does come about in some proportion of the cases – for he has never had a real safety margin to tide him through adversity.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to common stocks, when market is pricy.

1. Under 1972 conditions, the market is overpriced for common-stock. “In a typical case”, the earning power (earning yield) is now much less than 9% on the price paid.
2. Let us assume that by concentrating somewhat on the low-multiplier issues among the large companies a defensive investor may now acquire equities at 12 times recent earnings – i.e., with an earnings return of 8.33% on cost.
3. He may obtain a dividend yield of about 4%, and he will have 4.33% of his cost reinvested in the business for his account.
4. On this basis, the excess of stock earning power over bond interest over a ten-year basis would still be too small to constitute an adequate margin of safety.
5. For that reason, we feel that there are real risks now even in a diversified list of sound common stocks.
6. The risks may be fully offset by the profit possibilities of the list; and indeed the investor may have no choice but to incur them – for otherwise he may run an even greater risk of holding only fixed claims payable in steadily depreciating dollars.
7. Nonetheless, the investor would do well to recognize, and to accept as philosophically as he can, that the old package of good profit possibilities combined with small ultimate risk is no longer available to him.


Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to common stocks, under normal market conditions.

1. In common stock bought for investment under normal conditions, the margin of safety lies in an expected earning power considerably above the going rate for bonds.
2. Assume, earning power (earning yield) is 9% on the price, and that the bond rate is 4%; then the stock buyer will have an average annual margin of 5% accruing in his favour. Over a ten-year period the typical excess of stock earning power over bond interest may aggregate 50% of the price paid. This figure is sufficient to provide a very real margin of safety – which, under favourable conditions, will prevent or minimize a loss.
3. In many cases, such reinvested earnings fail to add commensurately to the earning power and value of his stock.
4. If such a margin is present in each of a diversified list of 20 or more stocks, the probability of a favourable result under “fairly normal conditions” becomes very large. That is why the policy of investing in representative common stocks does not require high qualities of insight and foresight to work out successfully.
5. If the purchases are made at the average level of the market over a span of years, the prices paid should carry with them assurance of an adequate margin of safety.
6. The danger to investors lies in concentrating their purchases in the upper levels of the market, or in buying nonrepresentative common stocks that carry more than average risk of diminished earning power.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to common stocks, under depression conditions

There are instances where a common stock may be considered sound because it enjoys a margin of safety as large as that of a good bond.

1. This will occur, for example, when a company has outstanding only common stock that under depression conditions is selling for less than the amount of bonds that could safely be issued against its property and earning power.
2. That was the position of a host of strongly financed industrial companies at the low price levels of 1932-33.
3. In such instances the investor can obtain the margin of safety associated with a bond, plus all the chances of larger income and principal appreciation inherent in a common stock. (The only thing he lacks is the legal power to insist on dividend payments “or else” – but this is a small drawback as compared with his advantages.)
4. Common stocks bought under such circumstances will supply an ideal, though infrequent, combination of safety and profit opportunity.
5. As a quite recent example of this condition, let us mention once more National Presto Industries stock, which sold for a total enterprise value of $43 million in 1972. With its $16 millions of recent earnings before taxes the company could easily have supported this amount of bonds.

Ref: Intelligent Investor by Benjamin Graham

Margin of Safety concept as applied to “fixed-value investment.”

1. This is essential to the choice of sound bonds and preferred stocks.
2. A railroad should have earned its total fixed charges better than 5 times (before income tax), taking a period of years, for its bonds to qualify as investment-grade issues.
3. This past ability to earn in excess of interest requirements constitutes the margin of safety that is counted on to protect the investor against loss or discomfiture in the event of some future decline in net income.
4. (The margin above charges may be stated in other ways – for example, in the percentage by which revenues or profits may decline before the balance after interest disappears – but the underlying idea remains the same.)
5. The bond investor does not expect future average earnings to work out the same as in the past; if he were sure of that, the margin demanded might be small.
6. Nor does he rely to any controlling extent on his judgment as to whether future earnings will be materially better or poorer than in the past, if he did that, he would have to measure his margin in terms of a carefully projected income account, instead of emphasizing the margin shown in the past record.
7. Here the function of the margin of safety is, in essence, that of rendering unnecessary an accurate estimate of the future.
8. If the margin is a large one, then it is enough to assume that future earnings will not fall far below those of the past in order for an investor to feel sufficiently protected against the vicissitudes of time.
9. The margin of safety for bonds may be calculated, alternatively, by comparing the total value of the enterprise with the amount of debt. (A similar calculation may be made for a preferred-stock issue.)
10. If the business owes $10 million and is fairly worth $30 million, there is room for a shrinkage of two-thirds in value – at least theoretically – before the bondholders will suffer loss. The amount of this extra value, or “cushion,” above the debt may be approximated by using the average market price of the junior stock issues over a period of years.
11. Since average stock prices are generally related to average earning powers, the margin of “enterprise value” over debt and the margin of earnings over charges will in most cases yield similar results.


Ref: Intelligent Investor by Benjamin Graham