Behaviorists tell us that we tend to overweight and overreact to the most recently received information. If we do, we will find that the information that we thought was so important becomes tempered, and reduced in significance, by new and related information that follows.

A comprehensive list of factors brings predictive stability and predictive stability and predictive power.

Behaviorists tell us that we tend to overweight and overreact to the most recently received information. If we do, we will find that the information that we thought was so important becomes tempered, and reduced in significance, by new and related information that follows.

The New Finance focused on the market's major systematic mistake. In failing to appreciate the strength of competitive forces in a market economy, it over estimates the length of the short run. In doing so, it overreacts to records of success and failure for individual companies, driving the prices of successful firms too high and their unsuccessful counterparts too low.

CAPM also makes use of what is called a "definitional identity." This is something that is automatically true, simply because of the way things have been defined.

Although efficient markets people still go around saying there is a "mountain" of evidence supporting their hypothesis, the truth of the matter is that it's a very old mountain that's now eroding rapidly into the sea.

Less volatile stocks tend to have negative abnormal profits; more volatile stocks tend to have positive abnormal profits.