The semi-strong form of market efficiency suggests that all publicly available information is already incorporated into a stock's price. Therefore, no investor can achieve superior returns by using this information.

Let's analyze each option:

a) ABC Inc. has announced decreased year-over-year earnings, yet its stock price has increased following that announcement. This is not necessarily a violation of the semi-strong form of market efficiency. The stock price could have increased due to other publicly available information that outweighs the negative earnings report.

b) ABC Inc. stock price return follows a random walk. This is actually consistent with the semi-strong form of market efficiency. If a stock's price follows a random walk, it means that future price movements are not predictable based on past price movements or any other publicly available information.

c) John Dow made money in ABC Inc. based on his private information analysis. This could be a violation of the semi-strong form of market efficiency if John Dow's private information was publicly available and the market failed to incorporate it into the stock's price. However, if the information was truly private and not available to the public, then this would not violate the semi-strong form of market efficiency.

d) None of the above. This could be the correct answer if none of the other options represented a violation of the semi-strong form of market efficiency.

Based on the above analysis, the answer would be (c) John Dow made money in ABC Inc. based on his private information analysis, assuming that the private information was publicly available and the market failed to incorporate it into the stock's price.

Question

The semi-strong form of market efficiency suggests that all publicly available information is already incorporated into a stock's price. Therefore, no investor can achieve superior returns by using this information.

Let's analyze each option:

a) ABC Inc. has announced decreased year-over-year earnings, yet its stock price has increased following that announcement. This is not necessarily a violation of the semi-strong form of market efficiency. The stock price could have increased due to other publicly available information that outweighs the negative earnings report.

b) ABC Inc. stock price return follows a random walk. This is actually consistent with the semi-strong form of market efficiency. If a stock's price follows a random walk, it means that future price movements are not predictable based on past price movements or any other publicly available information.

c) John Dow made money in ABC Inc. based on his private information analysis. This could be a violation of the semi-strong form of market efficiency if John Dow's private information was publicly available and the market failed to incorporate it into the stock's price. However, if the information was truly private and not available to the public, then this would not violate the semi-strong form of market efficiency.

d) None of the above. This could be the correct answer if none of the other options represented a violation of the semi-strong form of market efficiency.

Based on the above analysis, the answer would be (c) John Dow made money in ABC Inc. based on his private information analysis, assuming that the private information was publicly available and the market failed to incorporate it into the stock's price.

Knowee AI · Accepted Answer

The semi-strong form of market efficiency suggests that all publicly available information is already incorporated into a stock's price. Therefore, no investor can achieve superior returns by using this information.

Let's analyze each option:

a) ABC Inc. has announced decreased year-over-year earnings, yet its stock price has increased following that announcement. This is not necessarily a violation of the semi-strong form of market efficiency. The stock price could have increased due to other publicly available information that outweighs the negative earnings report.

b) ABC Inc. stock price return follows a random walk. This is actually consistent with the semi-strong form of market efficiency. If a stock's price follows a random walk, it means that future price movements are not predictable based on past price movements or any other publicly available information.

c) John Dow made money in ABC Inc. based on his private information analysis. This could be a violation of the semi-strong form of market efficiency if John Dow's private information was publicly available and the market failed to incorporate it into the stock's price. However, if the information was truly private and not available to the public, then this would not violate the semi-strong form of market efficiency.

d) None of the above. This could be the correct answer if none of the other options represented a violation of the semi-strong form of market efficiency.

Based on the above analysis, the answer would be (c) John Dow made money in ABC Inc. based on his private information analysis, assuming that the private information was publicly available and the market failed to incorporate it into the stock's price.

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