Absolute Breadth Index

Absolute Breadth Index is a stock market technical analysis tool developed by Norman G. Fosback.  He first introduced this idea in his book “Stock Market Logic”.  Norman G. Fosback used this stock market technical indicator to forecast if stock prices will be higher in three to twelve months time.  He found that high indicator values lead to higher stock prices.

Norman G. Fosback's stock market technical indicator looks at the relationship between New York Stock Exchange's Advancing Issues and its Declining Issues.

The formula for calculating Absolute Breadth Index is:


ABSOLUTE VALUE ( NYSE Advancing Issues - NYSE Declining Issues )

Absolute Breadth Index

The way to use this indicator is to look for extreme readings.  When a high reading is a result of NYSE Advancing Issues, it can be used in conjunction with your Momentum Indicators.  Prices are heading higher from general market direction.  When a high reading is a result of NYSE Declining Issues, it can used in conjunction with your Volatility Indicators.  Look for quick sharp reversals from short covering rallies.


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