ox-charts
Reading the numbers

Volume profile, POC, value area and VWAP

Where the market traded most, the fair-value range around it, and the day's average price.

POCVAH: value area highVAL: value area lowShaded band: 70% of the volume
Volume by price. The POC is the longest bar; the value area is the band holding 70% of the volume around it.
TermMeaning
Volume profileVolume traded at each price across the visible range, drawn from the right edge. Scroll or zoom and it recomputes.
POC (point of control)The price with the most volume. The market's fairest price for that range; price often returns to it.
Value areaThe band around the POC holding 70% of the volume. Its top and bottom (VAH, VAL) act as edges.
High-volume nodesThick parts of the profile. Price slows down and rotates there.
Low-volume nodesThin parts. Price moves through them fast.
VWAPΣ(price × volume) ÷ Σ(volume) since the session start: the average price everyone paid today.
  • Above VWAP, the average buyer today is in profit, and dips to VWAP often find buyers. Below it, the reverse.
  • Opening outside yesterday's value area and failing to get back in often means a trend day. Opening inside it usually means rotation.
  • TPO shows the same idea by time rather than volume: letters mark each period the market spent at a price.