The ( ) is a momentum oscillator for .
measures the difference between two volume-based moving averages as a
percentage of the larger moving average. As with and the Percentage Price
Oscillator ( ), it is shown with a signal line, a histogram and a centerline.
is positive when the shorter is above the longer and
negative when the shorter is below. This indicator can be used to define
the ups and downs for , which can then be use to confirm or refute other signals.
Typically, a breakout or support break is validated when is rising or positive.