(18 of 20) Ch.13 - Capital Asset Pricing Model (CAPM): underpriced & overpriced assets - YouTube

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Okay, then, let's look at this graph again.
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What if we are given some information on a company stock?
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We know the beta, we know the return on it, and we realize that the return is actually
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higher than the return that would be on the security market line, right?
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So, what if we have a company whose stock has a combination of beta, an expected return
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that lies above the line?
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When a stock lies above the security market line, it means that the return is better than
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it should be for this amount of beta, systematic risk.
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Is it a good thing for investors?
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Of course, because they're paying some money to buy a share and they're compensated more
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than they should be compensated for the kind of, you know fluctuations and returns that
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they are getting with their purchase.
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So, this stock will be very popular, in high demand.
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And high demand means the price will rise.
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If the price rises, then eventually, things will stabilize.
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Because you will be paying more money today and you know, everything you get in the future
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like the dividends will become sort of a lower percentage of what you paid, which is how
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you calculate the return.
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So, the return will drop, and graphically, the return dropping means they're moving down,
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straight down toward the security market line.
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And eventually the market will sort of stabilize itself.
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And the price will rise high enough to make the return fall low enough so that the point
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reaches the security market line.
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And this is where the kind of the market equilibrium will occur.
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And so, the fact that currently this stock has a better return than it should implies
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that the price is too low.
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And we say that this stock is currently underpriced.
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So, above the line underpriced.
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And the opposite will happen if the information we are given indicates that a company stock
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lies below the line.
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This is when everything is reversed.
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The investors are compensated inadequately for the amount of systematic risk or fluctuations
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in returns that cannot be controlled by the investor.
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Right?
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So, they are not arm compensated enough for the amount of risk that they are accepting
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when they buy this company's shares.
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And that makes the stock kind of you know unpopular.
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The price will drop so that investors get interested in buying the stock.
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If you pay less for the stock now, then everything you get in the stock later in the future,
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like the dividends, mathematically will mean a higher percentage of what you're paying
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for the stock now, which is exactly how we calculate return.
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And so, that means that as the price starts falling, the return starts rising.
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And graphically, the point that was under the security market line, will start climbing
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up and slowly reaching the security market line.
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And the equilibrium occurs when the point is exactly on the line.
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So, for this amount of beta we have the right compensation for it in the form of expected
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return.
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And so, the fact that currently the price is too high and will need to fall, it means
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that this stock is currently overpriced.
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So, to summarize, any point about the line means the stock is underpriced.
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Any point under the line, means the stock is overpriced.