Research suggests that the semi-strong form of the efficient markets hypotheses is not valid.

Question

Quizplus · Accepted Answer

The semi-strong form of the efficient market hypothesis posits that all publicly available information is already reflected in stock prices, meaning that investors cannot consistently achieve higher returns by trading on this information. While there is debate and research challenging aspects of market efficiency, the semi-strong form is supported by a substantial body of empirical evidence showing that it is difficult to outperform the market through publicly available information.

Research Suggests That the Semi-Strong Form of the Efficient Markets