Define the efficient market hypothesis (EMH). What are the implications of EMH for corporate managers? Your initial post must be in your own words, be a minimum of 350 words in length.   Forum Instructions Make sure you are using credible sources in your assignments. Scholarly journals are the preferred source of credible/quality references. These consist of peer-reviewed articles published in academic journals related to the field, which are found via our Library.  Websites such as Investopedia, ask.com, answers.com, or dictionary-type of websites limit the insight to the topics. Wikipedia is not acceptable as it is not a reliable or credible source of reference.