Definitions for "Advance/Decline Line"
A technical analysis tool representing the total of differences between advances and declines of security prices. The advance/decline line is considered the best indicator of market movement as a whole. (See also: Breadth-of-Market Theory)
Each day's declining issues are subtracted from the day's advancing issues. The difference is added to (subtracted from if negative) a running total or sum. See Breadth.
technical analysis tool considered a good measure of the overall market's direction. Equal to the number of stocks which rose divided by the number of stocks which fell during some specified period. Considered bullish if greater than 1, or bearish if less than 1. see also breadth-of-market theory.