Advance Decline Ratio

Definition:

Ratio of the number of stocks that advance in value to the number of stocks that decline in value over a given time period. An increasing advance-decline ratio signals a bullish trend while a decreasing advance-decline ratio signals a bearish trend.

Investing Essentials


Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

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Implied volatility

The expected volatility in a stock's return derived from its option price, maturity date, exercise price, and riskless rate of return, using an option pricing model such as Black-Scholes.

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