Weak form market efficiency is a concept that suggests past stock prices and trading volumes do not predict future stock prices. In a weak form efficient market, all historical information is already ...

I began this article with the goal of addressing an academic notion, the efficient-market hypothesis, or EMH. My research dissuaded me. In one University of Chicago article, a faculty member questions ...

The dramatic rise in passive investing has not been without controversy. Wall Street has ridiculed it for years because the price discovery efforts of active managers help ensure that prices correctly ...

The Efficient Market Hypothesis stated across all markets simultaneously is false, but there is a lot of nuance, and there are numerous nuanced violations worth knowing about. Whether the EMH is true ...

Editor's note: This is the introductory article in a series discussing the merits of the efficient market hypothesis. You can read Caleb Petitt's defense of EMH in Part 2 here. Nothing in this article ...

Exchange traded funds (ETFs) have improved the efficiency of stock markets in the developed world, new research suggests. The study concludes that ETFs have reshaped how equity markets incorporate ...

Ronald J. Gilson and Reinier H. Kraakman, The Mechanisms of Market Efficiency Twenty Years Later: The Hindsight Bias, 28 Journal of Corporation Law 715 (2003). (Reprinted in 46 Corporate Practice ...