Answered: According to the efficient markets…

Microeconomics: Private and Public Choice (MindTap Course List)

16th Edition

ISBN:9781305506893

Author:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson

Publisher:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson

ChapterST3: The Stock Market: Its Function, Performance, And Potential As An Investment Opportunity

Section: Chapter Questions

Problem 4CQ

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Question

According to the efficient markets hypothesis,
a. changes in stock prices are impossible to predict from public
information.
b. excessive diversification can reduce an investor's expected portfolio
returns.
c. the stock market moves based on the changing animal spirits of
investors.
d. actively managed mutual funds should give higher returns than index
funds.

Definition Definition Degree to which financial markets incorporate all available information into the prices of assets. In a more efficient market, the prices reflect the available information more than that in a weak efficient market. It is difficult for investors to outperform the market in a strong efficient market. This is because all the available information is already discounted in the asset's price. However, in a weak-form efficiency, the market does not reflect all information in the asset's price. As a result, it becomes easier to generate better returns in a weak form or an inefficient market.

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