PercentageVolumeOscillator

Sometimes abbreviated as PVO.
Is a momentum indicator.
Is computed using the volume.
Returns two time series. The first is the percent difference between 9- and 16-period simple moving averages, and the second is a signal line represented as a 9-period exponential moving average of the first.
FinancialIndicator["PercentageVolumeOscillator",n1,n2,n3] uses periods and for the first series and period for the second.