Chapter 7 ◼ Stocks and Stock Valuation 227
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every day. The price we pay will be very close to the price paid by the buyer just before or
after us. Many stock purchases and sales take place between large institutional investors
managed by people with advanced degrees in finance or economics, and whose only job is
to know everything there is to know about the companies they invest in. If these investors
agree to pay a particular price, and equally sophisticated investors agree to sell at the same
price, then the price must reflect all the information it is legally possible to have. These
conditions describe what is known as the semi-strong form of the efficient market
hypothesis, which implies that no investor has an unfair advantage over any other investor.
5. For what are we actually paying when we buy a share of stock?
Kraska intends to use the following examples to answer this question.
a. ABC Inc. preferred stock pays a constant dividend of $5.00 per year. Assume that
investors require a 9% rate of return.
b. DEF, Inc. common stock that recently paid s a dividend of $1.50. The estimated growth
rate of dividends is 6% per year and the required rate of return is 11%.
c. GBH, Inc. pays no dividend and reinvests all of its earnings into rapid growth, but it is
expected to begin paying dividends in five years. The first dividend will be $5.00;
dividends will grow at 5% per year; the required rate of return throughout the period
is 15%.
To the extent that our assumptions are correct, in four years the next dividend will be
6. Why do stock prices change so quickly and by so much?
Notice that the formulas we used depend on forecasts of variables that in themselves
depend on many other forecasts, most of which are very difficult to predict. Future
dividends depend on future earnings, which depend on future costs, future sales volume,