Different axes
Plain volume answers "when was it active": you see the spike on a news release, the fade at the end of a move, the thin overnight stretch. It is about moments in time.
A volume profile answers "at what price did most trading happen". It shows the levels where the market lingered and the ones it raced through. That is about price, not hours.
What each gives you
The histogram confirms a move: a breakout on rising volume and one on fading volume deserve different trust. It is useful exactly at the moment of the event.
The profile gives levels: the point of control, the edges of the value area, the thin stretches. Those references last for weeks and do not depend on whether you look at them today or next month.
How to combine them
A sensible order is this: the profile provides the map — where the levels are — and the histogram confirms the event on that map. A break of the value-area edge on rising volume and the same break in thin overnight liquidity are two signals of different reliability.
One caveat for both: they rest on real exchange volume. On forex what is shown is tick volume, an estimate, and any conclusion drawn from it should be treated as weaker.
Common mistakes
With plain volume the main mistake is treating high volume as bullish. It means interest, not direction: it is just as high on a reversal down as on a rally.
With the profile it is picking a period at random. A daily profile answers intraday questions; weekly and monthly ones give levels that last for weeks. Mixing them is pointless — each has its own horizon.
And one shared by both: comparing absolute volume figures between instruments. The only meaningful comparison is against the same instrument's own history at the same hour.
Frequently asked questions
- How does a volume profile differ from plain volume?
- By its axis. The histogram shows volume over time, the profile over price. The first answers "when", the second "at what price".
- Which is better for finding levels?
- The volume profile: the point of control and the value-area edges are ready-made levels. A plain histogram gives no levels at all.
- Do they work on forex?
- Only partly. There is no true volume there; what is shown is tick volume, the count of price changes. Usable, but the conclusions are weaker than on exchange instruments.
Other lessons in this track
This material is educational and is not individual investment advice.