Sunday, November 11, 2018

The Essence of Value Investing

Here is a good analogy on investing and the concept of margin of safety from Buffett some time back.

If you see that a man is very fat, it makes little difference that you are able to precisely calculate his exact weight to enhance your conclusion. Is he 102kg or 110kg? Does it matter? Similarly in trying to determine the intrinsic value of the company, it doesn't matter if you get it at $102 or $110. What is more important is where is the price now? If it is $98, it means that you are aiming for 4-12% upside. That's not a lot of buffer against any calculation error. It means that the stock is not cheap enough. 

Margin of Safety


If the stock is at $70, then we are talking. The margin of safety now opens up to 30%. It takes a few more mistakes for us to be wrong vs if we bought it at $98. The chart above is quite enlightening in telling the whole margin of safety story. The blue line represents the intrinsic value of a company. Over time it creeps up as most companies create value for the society and earn profits that help it to grow stronger.

But the share price rarely track its intrinsic value. It moves above or below it with the vagaries of the markets. We buy it when there is a margin of safety. Usually, this doesn't come often. Maybe once every 12 to 24 months or longer. There are more times when stocks trade above intrinsic value, esp when their sectors are very hot, like technology in 2017 and early 2018.

This is essentially the essence of value investing. Ben Graham, the father of value investing, was famous for saying, if you have to surmise value investing in three words, it is this: margin of safety.

See also
Business moats
Intrinsic Value
Value Investing

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