CHAPTER 14 B-
e. True. Competition among investors results in the rapid transmission of new market information.
4. On average, the only return that is earned is the required return—investors buy assets with returns in
excess of the required return (positive NPV), bidding up the price and thus causing the return to fall
6. Yes, historical information is also public information; weak form efficiency is a subset of semistrong
7. Ignoring trading costs, on average, such investors merely earn what the market offers; the trades all
8. Unlike gambling, the stock market is a positive sum game; everybody can win. Also, speculators
9. The EMH only says, within the bounds of increasingly strong assumptions about the information
processing of investors, that assets are fairly priced. An implication of this is that, on average, the
typical market participant cannot earn excessive profits from a particular trading strategy. However,
10. a. If the market is not weak form efficient, then this information could be acted on and a profit
b. Under (2), if the market is not semistrong form efficient, then this information could be used to
buy the stock “cheap” before the rest of the market discovers the financial statement anomaly.
c. Under (3), if the market is not strong form efficient, then this information could be used as a
profitable trading strategy, by noting the buying activity of the insiders as a signal that the stock
is underpriced or that good news is imminent. Since (1) and (2) are weaker than (3), all three
11. A technical analyst would argue that the market is not efficient. Since a technical analyst examines
past prices, the market cannot be weak form efficient for technical analysis to work. If the market is
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