FIN 3715 Chapter : Chapter 12 Solutions

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15 Mar 2019
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Answers to concepts review and critical thinking questions: they all wish they had! Ignoring trading costs, on average, such investors merely earn what the market offers; stock investments all have a zero npv. If trading costs exist, then these investors lose by the amount of the costs: unlike gambling, the stock market is a positive sum game; everybody can win. Also, speculators provide liquidity to markets and thus help to promote efficiency: 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, that does not mean that a few particular investors cannot outperform the market over a particular investment horizon. If the market is not weak form efficient, then this information could be acted on and a profit earned from following the price trend.

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