The Percentage Volume Oscillator (PVO) is a popular and free Forex indicator for the MT5 platform. It is a useful tool for traders to identify the strength of a trend and to detect potential reversals. The PVO indicator is typically used to identify divergences between the price and volume, which can be used as a warning sign of a potential trend reversal. The PVO indicator is a popular and useful tool for traders to identify potential reversals and to gauge the strength of a trend.