Volume Analysis for Traders: What Volume Tells You About Price

What volume measures

Volume is the number of shares (or contracts) traded in a period. Every share bought is also sold, so volume does not say whether buyers or sellers won; price does that. Volume says how much participation there was while price moved.

A price move on heavy volume involved many participants and is generally taken more seriously than the same move on very light volume. Volume is most useful as a confirmation of what price is already showing.

Relative volume

Raw volume is hard to compare between stocks: one million shares is a lot for one company and nothing for another. Relative volume (RVOL) compares today's volume with the stock's own average, often the last 20 days. An RVOL of 3 means three times the usual activity.

High relative volume often accompanies news, results, index changes or the start of a new trend. Scanning for unusual relative volume is a common way to find stocks where something is happening.

Volume on breakouts

When price breaks above resistance on volume well above average, it suggests many buyers are willing to pay higher prices, and the breakout is more likely to hold. A breakout on below-average volume is more prone to failing, as there may not be enough demand to sustain it.

Volume is not a guarantee in either direction, but it is one of the most widely used breakout filters.

Volume on pullbacks and in trends

In a healthy uptrend, volume tends to rise on up days and fall on pullbacks: buyers are active on advances, sellers are not pressing on declines. If pullbacks start coming with heavier volume than rallies, the trend may be weakening.

At the end of long moves, very high volume with little price progress (sometimes called churning or climax volume) can signal exhaustion, as the last buyers or sellers rush in.

Delivery percentage (India-specific)

NSE publishes how many of the day's traded shares were actually taken into delivery rather than squared off intraday. A high delivery percentage suggests more participants are holding the shares, not just trading them within the day.

Delivery data is published after the market closes and can be noisy. It is best used as supporting information, for example to see whether a price rise came with genuine holding interest.

Common volume indicators

Volume moving average: a simple average of volume to spot unusual days.

On-Balance Volume (OBV): adds volume on up days and subtracts it on down days, giving a running total that can show accumulation or distribution.

VWAP: the volume-weighted average price, widely watched intraday as a fair-value reference.

Chaikin Money Flow and Money Flow Index: combine price position within the range with volume to estimate buying or selling pressure.

Volume profile: shows how much volume traded at each price level, highlighting prices where most activity happened.

Volume in futures and options

For derivatives, volume and open interest are read together. Rising volume with rising OI means new positions are being opened; high volume with falling OI means positions are being closed. Index futures volume is often used as a stand-in for index volume.

In options, unusually high volume at one strike compared with its usual level can show where traders are concentrating, though it does not say whether they are buying or selling.

Volume at different times of day

Intraday volume follows a typical pattern: heavy in the first half hour, lighter around midday, rising again into the close. A spike at 1 PM is therefore more unusual than the same volume at 9:20 AM. Compare volume with the usual level for that time of day, not with the day's opening minutes.

Caveats

Index charts have no volume of their own, so use the volume of the futures or of the index's constituents. Volume around results, index rebalancing and block deals can be very high for reasons unrelated to trend. And volume patterns that look clear in hindsight are much less clear in real time.

A worked example

Suppose a stock has traded between ₹480 and ₹520 for six weeks with an average daily volume of 8 lakh shares. On Monday it closes at ₹532 with 26 lakh shares traded, a relative volume of about 3.2. Over the next three days it drifts back to ₹524 on volumes of 6-7 lakh, below average.

Read together: a strong breakout with heavy participation, followed by a quiet pullback towards the old resistance. Many traders would see this as a healthier pattern than a breakout on 9 lakh shares followed by a heavy-volume fall back into the range. It still needs a stop below the old range, because volume improves the odds; it does not remove risk.

Use volume on iTradeChart

Charts show volume bars under the price, and you can add Volume MA, OBV, VWAP, CMF, MFI, Relative Volume and Volume Profile from the indicators panel. The scanner has ready-made volume scans such as volume shockers, breakout with volume and heavy selling, and Pro scans include delivery spikes and accumulation.

Daily stock list pages also show the day's volume shockers across NIFTY 500.