VFI,introduced by Markos Katsanos, is based on the popular On Balance Volume (OBV) but with three very important modifications:
* Unlike the OBV, indicator values are no longer meaningless. Positive readings are bullish and negative bearish. * The calculation is based on the day's median (typical price) instead of the closing price. * A volatility threshold takes into account minimal price changes and another threshold eliminates excessive volume.
A simplified interpretation of the VFI is: * Values above zero indicate a bullish state and the crossing of the zero line is the trigger or buy signal. * The strongest signal with all money flow indicators is of course divergence.
I have exposed options to plot a signal EMA. All parameters are configurable.
Markos suggests using 0.2 coeff for day trading and 0.1 for intra-day.