Volume Analysis in Trading: How to Read Volume for Confirmation

Volume is the number of shares or contracts traded in a given period. It measures the strength behind price movements.

What Volume Tells You

Signal	What It Means
High volume + price up	Strong buying interest
High volume + price down	Strong selling pressure
Low volume + price up	Weak buying — move may not sustain
Low volume + price down	Weak selling — move may not sustain
Volume spikes	Significant event (news, large trader)

Volume Confirmation

Price Move	Volume	Reliability
Breakout above resistance	High	Very reliable
Breakout above resistance	Low	Likely false
Support holds	High on bounce	Reliable
Support breaks	Low	May be a trap

A price move without volume confirmation is less likely to continue.

Volume in Trends

Trend Phase	Volume Characteristic
Beginning of uptrend	Volume increases
Middle of trend	Volume steady
End of uptrend	Volume declining (divergence)
Beginning of downtrend	Volume spikes
Capitulation	Very high volume, price stabilises

Volume Divergence

Price	Volume	Signal
Making higher highs	Declining	Trend weakening — reversal may come
Making lower lows	Declining	Selling drying up — bottom may be near
Breaking resistance	Low	False breakout likely

Volume Indicators

Indicator	How It Works
On-Balance Volume (OBV)	Running total of volume — up days add, down days subtract
Volume Profile	Shows volume at each price level
VWAP	Average price weighted by volume
Accumulation/Distribution	Combines volume with close price position

How to Use OBV

OBV	Price	Signal
Rising	Rising	Strong uptrend, confirmed
Rising	Falling	Accumulation — bullish divergence
Falling	Falling	Strong downtrend, confirmed
Falling	Rising	Distribution — bearish divergence

Volume by Market Phase

Phase	Volume Action
Accumulation	Volume increases on up days, decreases on down days
Mark-up	Volume high and consistent
Distribution	Volume increases on down days, decreases on up days
Mark-down	Volume spikes on sell-offs

Common Mistakes

Mistake	Why
Ignoring volume	Price moves without volume are unreliable
Focusing only on volume bars	Compare to average, not absolute
Forgetting context	One day of high volume isn’t a trend
Not checking multiple timeframes	Daily + weekly volume gives better picture

Bottom Line

Volume confirms the strength of price moves. High volume breakouts are reliable; low volume breakouts often fail. Volume divergence — price moving one way and volume the other — signals potential reversals. Use OBV or volume profile for deeper analysis. Always check volume alongside price action.