Volume Zone Oscillator (VZO)
Volume Zone Oscillator: the share of volume on up closes minus down closes, smoothed, in percent, showing which side controls volume.

How to read it
- Positive values: volume favours buyers; negative: sellers.
- Beyond ±40 is stretched, beyond ±60 extreme.
- Crosses of zero mark a shift in volume control.
Key settings
- Length 14; inner level 40, outer level 60.
Good to know
- Drawn in its own pane below the chart.