Beginner’s guide to volume analysis

Beginner’s guide to volume analysis

Reading time: 9 minutes

Price tells traders what is happening in a market. Volume can provide another useful clue: how much activity is behind that move. A sharp price rise accompanied by strong trading activity can carry a different message from the same price move on very light volume. The same applies when a market falls, breaks through support or moves out of a long period of consolidation.

This is where volume analysis can help. Traders commonly use volume to assess the strength of price movements, confirm trends and look for signs that momentum may be changing. However, it isn’t a standalone signal, and high volume does not automatically mean that prices will continue in the same direction.

For beginners, understanding the basics of volume analysis can be a good starting point. Once you know what volume represents and how it interacts with price, you can begin using it alongside other technical indicators and market analysis.

What is volume in trading?

Volume measures how much of an asset is traded during a particular period. On a chart, it is commonly displayed as vertical bars in a separate panel below the price chart.

For stocks and exchange-traded funds (ETFs), volume generally represents the number of shares traded, while futures volume counts the number of contracts traded. A daily volume figure, for example, shows the total activity recorded during the relevant trading session.

Volume can help traders assess the level of market participation behind a price move. Higher volume indicates more trading activity, while lower volume suggests less activity. However, volume alone does not show whether buying or selling pressure is stronger, nor does it guarantee that a price move will continue.

Volume data also varies across markets. Exchange-traded markets, such as stocks and futures, record trading activity at the exchange level, although figures may differ across venues. Spot forex, by contrast, is an over-the-counter (OTC) market without a single central exchange recording every transaction. As a result, traders may use broker-provided tick volume, which counts price changes rather than actual transactions, as an indication of market activity. This distinction is important when applying volume analysis across different markets.

Why does volume matter?

Volume can provide context that price alone does not. Imagine a stock rises 5% in a single trading session. At first glance, the move might look significant. However, suppose the stock normally trades millions of shares each day, but relatively few shares are traded during the rally. The move may tell a different story from a 5% rise accompanied by unusually high trading activity.

Analysing price and volume together can give traders a more complete picture of market activity. However, higher volume does not guarantee that a price move will continue, so it is important to consider other market factors as well.

Volume price analysis basics

The simplest way to start can be to compare the direction of price with the direction of volume.

Rising price and rising volume

When price rises while volume also increases, it can indicate stronger participation in the move. For example, a stock breaks above resistance and trading activity rises sharply at the same time. This may provide more confidence in the breakout than a similar move on very low volume. It is still not a guarantee because price can reverse even after a high-volume breakout.

Rising price and falling volume

This combination can deserve closer attention. If price continues climbing but volume gradually declines, fewer market participants may be supporting the move. That does not automatically mean the trend will reverse. However, weakening volume can prompt traders to look for other signs that momentum is slowing.

Falling price and rising volume

A price decline accompanied by increasing volume can suggest stronger selling participation. This can be particularly significant if price breaks below an established support level. Traders may look for confirmation that the breakdown is genuine rather than a temporary move below support.

Falling price and falling volume

A decline on low or decreasing volume may indicate weaker selling pressure. In some situations, this can occur during a normal pullback within a broader uptrend. Again, context matters. Volume should support the analysis rather than replace it.

How to read volume bars

Volume bars can be added to most trading charts. To read these bars, start by comparing the current volume with recent activity. For example, suppose the previous 20 trading sessions have produced relatively similar volume levels. Suddenly, today’s volume is much higher than that recent range. That increase may be worth investigating.

You can then ask:

• Did the price move significantly?
• Did the market break support or resistance?
• Did the move follow an important economic announcement?
• Is the market continuing an established trend?
• Did volume increase at the same time as the breakout?
• Did the price reverse despite the increase in activity?

These questions help turn raw volume data into useful information. A volume spike is not inherently bullish or bearish. It simply tells you that trading activity was unusually high.

Popular volume indicators

Traders can use several indicators to study the relationship between price and volume.

On-Balance Volume (OBV)

On-Balance Volume (OBV) combines price direction with volume to track changes in cumulative volume. When the current closing price is higher than the previous close, the period’s volume is added to the OBV calculation. When the closing price is lower, volume is subtracted. If both closing prices are equal, OBV remains unchanged.

One useful application is divergence. If the price continues making higher highs but OBV fails to do the same, this may signal that buying pressure is weakening. Conversely, rising OBV while the price remains relatively flat may indicate underlying buying pressure that could precede a price move.

OBV is typically used to help assess trend strength and identify potential divergences, rather than to predict price movements with certainty. Like other technical indicators, it is best interpreted alongside price action and other market information.

Volume Weighted Average Price (VWAP)

Volume Weighted Average Price (VWAP) calculates an asset’s average traded price over a given period, giving greater weight to prices associated with higher trading volume. Institutional and intraday traders often use VWAP as a benchmark to assess whether an asset is trading above or below its volume-weighted average price.

For example, price remaining above VWAP during a strong intraday trend may support a bullish bias. Conversely, a sustained move below VWAP may indicate weakening intraday price strength. However, VWAP is not a standalone signal, and price movements around it should be considered alongside other market information.

Volume Rate of Change

Volume Rate of Change (Volume ROC) measures the percentage change in trading volume compared with an earlier period. It helps traders identify whether trading activity is increasing or decreasing over the selected timeframe.

A sharp increase in Volume ROC may highlight unusually high market activity. Traders can then examine price action, news and other market developments to assess what might be driving the change. However, an increase in volume alone does not indicate whether the price is likely to rise or fall.

How to use volume analysis in trading

Some of the popular trading strategies that use volume analysis basics include:

Breakout trading

Volume analysis is commonly used when assessing breakouts. Suppose a stock has traded below a resistance level for several weeks before breaking above it. A trader could examine volume for supporting evidence. If volume increases significantly as the price moves above resistance, this may suggest stronger market participation behind the breakout. If the price breaks resistance on unusually low volume, some traders may be more cautious about the possibility of a false breakout. However, neither high nor low volume guarantees a particular outcome.

Trend trading

Volume can also help traders assess the strength of an existing trend. In an uptrend, repeated price advances accompanied by higher-than-usual volume may support the view that the trend has broad participation. If rallies increasingly occur on low volume while sell-offs attract heavier activity, traders may watch for signs of weakening upward momentum or a potential change in market direction.

The same principle applies to downtrends. Traders can examine whether falling prices are accompanied by increasing volume and whether upward retracements occur on relatively lower volume. The aim is not to predict exactly when a trend will end, but to identify changes in the relationship between price and volume that may warrant further analysis.

Reversal trading

Volume can sometimes highlight unusual activity around potential turning points. Consider a market that has fallen sharply over several sessions. It then records an unusually high-volume session and closes well above its intraday low. This may indicate renewed buying interest or easing selling pressure, although it does not confirm that a reversal is underway.

A trader could look for further supporting evidence through key support levels, candlestick patterns or momentum indicators. However, high volume alone is not a reliable reversal signal, and additional analysis cannot guarantee that the market will change direction.

Volume divergence trading

Divergence occurs when price action and a volume-based indicator do not confirm each other. For example, price may continue making new highs while On-Balance Volume (OBV) fails to reach corresponding highs. This may suggest that the upward move is receiving less support from volume.

Divergence can provide a useful warning sign, but it does not guarantee a reversal and may persist for an extended period. Traders often wait for additional price confirmation, such as a break below a support level or a change in market structure, rather than acting solely on a divergence signal.

Managing risk when using volume

Volume can provide useful context for market analysis, but it cannot eliminate trading risk. One common risk-management practice is to determine a position size and set a stop-loss before entering a trade. A widely discussed guideline is to risk no more than 1%-2% of your trading account on a single position, although the appropriate level depends on individual circumstances and risk tolerance. This percentage refers to the amount potentially lost if the stop-loss is triggered, not the total position value. Stop-loss orders do not guarantee execution at the specified price, particularly during fast-moving markets.

Risk management is especially important around major news releases and other events that can trigger sharp price movements. High volume may accompany increased volatility, but it does not always do so. Traders can also test their volume-based strategies on a demo account before applying them in live markets, keeping in mind that simulated results may differ from live execution.

Keeping a trading journal can help traders evaluate their approach over time. Recording volume conditions, price setups, entries and exits makes it easier to review performance and assess whether volume analysis contributes to the strategy across different market conditions.

Build volume into your trading routine

Volume is a way to understand participation and add context to price movements. The basics of volume analysis are comparing price direction with trading activity, watching for unusual changes in volume and looking for confirmation around important market levels.

FP Markets offers access to real-time market data and volume analysis through powerful trading platforms like TradingView, alongside advanced charting tools. In addition, fast execution and competitive spreads can help you act when your trading setup appears, while educational resources can help you understand why the setup matters. Explore the markets with FP Markets by opening an account today.