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Saturday, April 20, 2024
Knowledge BaseGlossary

Glossary

Algorithmic Trading can be a complex subject. Keep your knowledge current with this glossary of key concepts, terminology, and technical indicators.

Advance/Decline Ratio- ADR

DEFINITION

A market-breadth indicator used in technical analysis to compare the number of stocks that closed higher with the number of stocks that closed lower than their previous day's closing prices. To calculate the advance/decline ratio, divide the number of advancing shares by the number of declining shares. The A/D ratio can be calculated for various time periods, such as one day, one week or one month.

 

EXPLANATION 

Investors can compare the moving average of the A/D ratio to the performance of a market index such as the NYSE or Nasdaq to see whether overall market performance is being driven by a minority of companies. This comparison can provide perspective on the cause of an apparent rally or sell-off. Also, a low A/D ratio can indicate an oversold market, while a high A/D ratio can indicate an overbought market. Thus, the A/D ratio can provide a signal that the market is about to change directions. 


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