Definition: The term advance decline on Wall Street refers to the relationship between stocks trading above their opening price and the stocks trading below their opening price. It is used as a measure of the market as a whole, and helps in determining if there is a strong Bull or Bear market in action. By comparing the percentage of stocks that are higher (advanced) than are lower (declined), analysts and investors can get a better sense of the market's mood.
Advance - Decline
By Joshua Kennon, About.com
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