Super Glossary

Advance-Decline (A-D) Line

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Advance-Decline (A-D) Line: The advance-decline line graphs the ratio of stocks that have risen in value — the advancers — to stocks that have fallen in value — the decliners — over a particular trading period. The direction and steepness of the A-D line gives you a general idea of the direction of the market. For example, a noticeable upward trend, which is created when there are more advancers than decliners, indicates a growing market. A downward slope indicates a market in retreat. At times, however, there may be no clear trend in either direction.

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