The weak form of the efficient market hypothesis implies that: No one can achieve abnormal returns using market information. Insiders, such as specialists and corporate board members, cannot achieve abnormal returns on average. Investors cannot achieve abnormal returns, on average, using technical analysis, after adjusting for transaction costs and taxes. All of above.
The Correct Answer and Explanation is :
The correct answer is: All of the above.
The weak form of the Efficient Market Hypothesis (EMH) asserts that financial markets fully reflect all historical market data, including past prices and trading volumes. This form of the EMH implies that no investor can consistently achieve abnormal returns using only this public information, as prices already incorporate all past market information.
Explanation:
- No one can achieve abnormal returns using market information:
The weak form of EMH suggests that historical price movements and trends are fully reflected in the current price. As a result, trying to predict future price movements based on past data alone (such as past prices and volume) will not consistently lead to returns greater than the market average. This implies that market information, including historical price data, cannot be used to predict or generate abnormal returns. - Insiders, such as specialists and corporate board members, cannot achieve abnormal returns on average:
While the weak form of EMH primarily focuses on historical market data, it also suggests that insiders who have access to non-public information, such as company-specific knowledge, cannot consistently outperform the market in the long run. This part of the statement may be more closely associated with the semi-strong and strong forms of EMH, which state that all public and private information is reflected in stock prices. In the weak form, however, it implies that insiders cannot consistently achieve abnormal returns based solely on historical data or past trends. - Investors cannot achieve abnormal returns, on average, using technical analysis, after adjusting for transaction costs and taxes:
The weak form suggests that technical analysis, which involves analyzing past price movements and trading volumes to predict future prices, cannot consistently generate above-average returns. Since all past market data is already reflected in current prices, relying on this data will not allow investors to achieve abnormal profits after factoring in transaction costs and taxes.
In conclusion, the weak form of EMH asserts that past market data is already reflected in stock prices, and no investor can consistently outperform the market using only that information.