Volume / Trade shows the average volume per trade. This can be useful for seeing who the market movers are. Volume / Trade is presented as a histogram below the chart.
If the average volume per trade is very high then it can be assumed that corporations are running the trend for the day.
If the average volume per trade is much lower it could be assumed that smaller groups are trading.
Viewed simultaneously with the Volume indicator, the Volume / Trade indicator will show exact points where a corporation has accounted for most of the volume on certain days.
If Volume is low but Volume / Trade is high it could be assumed that corporations have accounted for most of the action.If Volume were to be low and Volume / Trade also low it could be assumed that the market was characterised with many smaller groups on that day.