The idea in one breath: A volume profile turns the chart on its side and asks how much trading happened at each price rather than at each time. Its shape is a direct picture of where the market found agreement, and four shapes cover almost everything you will see.
An ordinary chart plots price against time. A volume profile plots volume against price: for every level, how much actually traded there. Time disappears entirely, which is the point — it strips out how long something took and leaves only where business got done.
The D
A fat middle tapering at both ends. This is balance made visible: most trade happened in a central band, both extremes were rejected. A D-shape says neither side won, and the middle is the fair price. Expect rotation, and expect the extremes to matter.
The P
Thin at the bottom, fat at the top. Price advertised downward, found no sellers willing to continue, rallied, and then spent its time building agreement at the higher level. A P is short covering or accumulation that resolved upward. The thin lower portion is unfinished business — nobody transacted much there, so a return is usually fast.
The b
The mirror image: fat at the bottom, thin above. Long liquidation or distribution. The same logic inverted, and the thin upper section is the part price will cross quickly if it goes back.
The double distribution
Two fat areas with a thin waist between them. This is the most informative shape on the list: the market balanced, something changed, it moved decisively through an area where almost nobody wanted to trade, and it balanced again somewhere else. That thin waist is a genuine void. Price tends to travel through it quickly in both directions, which makes it a poor place to expect support and a good place to expect speed.
The one rule that survives all four
Fat means agreement, and agreement means friction. Thin means disagreement, and disagreement means speed. That is the whole read. If you remember nothing else about profiles, remember that price grinds where it has traded a lot and travels where it has not.
This chart shows a market that balanced, moved sharply, and balanced again — a double distribution. Mark the thin waist: the price area the market crossed fastest and traded least.
Part of Track 8 · Auction & Order Flow — see the full syllabus.
Absorption versus exhaustion
A move stops for one of two reasons: it hit somebody willing to take the whole other side, or it simply ran out of people pushing. The first usually resolves through the level. The second usually reverses from it. On a price chart alone they can look the same, and pretending otherwise is how this concept gets misused.
Continue the track