Volume – The Power Behind a Price Movement
In technical analysis, price tells you what is happening, but volume tells you how important it is.
Think of volume as the fuel behind price action.
If a price move happens with high volume, it’s more likely to be real and sustainable.
If it happens on low volume, it might be weak, temporary, or even a false signal.
What Is Volume?
Volume is the number of shares (or contracts) traded during a specific time period — such as 1 minute, 1 hour, or 1 day.
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Shown as vertical bars at the bottom of most stock charts
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Each bar represents total trades for that period
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Often coloured:
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Green/blue bar = Volume on up day
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Red bar = Volume on down day
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How Volume Confirms Price Action
Let’s look at how volume helps confirm different technical patterns and signals.
1. Breakouts and Volume
A breakout occurs when price moves above resistance or below support.
Strong breakout = High volume
Weak breakout = Low volume (risk of fake-out)
High volume confirms conviction.
It means many buyers (or sellers) agree with the move — it’s more likely to last.
2. Reversals and Volume
When price reverses direction, volume can help validate whether it’s a real turning point.
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A bottom reversal with high volume suggests strong buyer interest.
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A top reversal with rising volume may signal increasing selling pressure.
Watch for volume spikes at major highs and lows — these can indicate a shift in control from buyers to sellers (or vice versa).
3. Support and Resistance Zones
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When price approaches support or resistance, volume gives clues:
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Rising volume near resistance = potential breakout
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Weak volume at support = support might fail
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Volume helps you gauge whether buyers or sellers are winning at key levels.
4. Trend Strength
In strong trends:
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Volume should increase in the direction of the trend
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Uptrend = Higher volume on green days
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Downtrend = Higher volume on red days
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If volume starts to fade, it may be a sign the trend is losing steam
5. Volume and Chart Patterns
Volume plays a critical role in validating chart patterns like triangles, flags, or cup and handle:
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Volume should contract during the pattern
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Then expand sharply on the breakout
This shows accumulation, followed by a surge in interest
Volume Indicators (Quick Overview)
You can also use special volume indicators to analyse it more deeply:
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On-Balance Volume (OBV) – Adds or subtracts volume based on price moves to show buying/selling pressure
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Volume Moving Average – Helps compare current volume to recent averages
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Volume by Price – Shows how much volume occurred at different price levels
Summary
Volume is a vital companion to price — it helps you filter signals, validate breakouts, and assess the strength of market moves.