Breakaway momentum is a "breadth thrust" coined by Walter Deemer in the 1970s that occurs when the ten-day total advances on the NYSE are greater than 1.97 times the ten-day total NYSE declines.
This indicator calculates the ratio and plots it as a histogram. The 1.97 threshold is also plotted as a horizontal line. Anytime the histogram gets above the line Breakaway Momentum has occurred.
This is a rare signal that has only happened 25 times since 1945.