Volume

Up/Down Volume

UDV

Splits each bar’s volume into two streams: Up Volume (full volume on up-closes) and Down Volume (full volume on down-closes). Unlike Net Volume which assigns a sign, this gives separate bars for each direction, making buying and selling pressure visually distinct.

Tips

A rising Up Volume trendline alongside flat or declining Down Volume confirms a healthy accumulation phase

Compare Up Volume and Down Volume at key support/resistance levels: dominant Up Volume at support confirms holding; dominant Down Volume confirms a break