Reading Markets · Candlesticks and Timeframes
Volume: The Story Behind the Price Move
What You'll Learn
- What volume actually measures
- Why the same price move can mean different things depending on volume
- How volume is typically displayed alongside a chart
The Big Idea
Let me introduce one more essential ingredient: volume. It measures how much of an asset actually changed hands during a given period, and it adds a second dimension to a candlestick's price story. A big price move on heavy volume tells a very different story than the same move on very light volume.
Let's Break It Down
While a candlestick, which you learned about earlier in this module, shows what price did during a period, volume shows how much trading activity actually produced that result. It is typically displayed as a set of vertical bars beneath the price chart, one per candle, with taller bars representing more activity during that period.
A price move backed by high volume generally suggests broad participation — many buyers or sellers were actively involved in producing that move. The same size price move on unusually low volume can suggest the opposite: relatively few participants were behind it, which can sometimes mean the move is less firmly established.
I want to be clear about a limitation here: volume does not tell you which direction price will go next. It is not predictive on its own. It adds context to what already happened, helping you judge how much conviction seemed to be behind a given price move, rather than forecasting the next one.
Real Example
Imagine two crowded rooms both suddenly bursting into applause. In one room, every single person is clapping. In the other, only two people near the front are clapping loudly enough to be heard by everyone else. Both produced the same sound, but they reflect very different levels of actual participation. That is the same relationship volume adds to a price move.
Why It Matters
Learning to glance at volume alongside price becomes especially useful once you reach breakouts later in this course. One of the most common questions about a breakout is whether it was backed by meaningful volume or not, and that judgment depends entirely on being able to read volume in the first place.
Common Mistake
Please do not treat volume as if it predicts future price direction on its own. Volume describes how much activity already happened. It adds context to a completed price move, not a forecast of the next one.
Quick Check
What does volume actually measure?
Key Takeaways
- Volume measures how much trading activity occurred during a given period, typically shown as bars beneath the price chart.
- A price move on high volume generally suggests broader participation than the same move on low volume.
- Volume adds context to a completed price move — it isn't predictive of future direction on its own.
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