How to Read Trading Volume in Forex Markets

Beyond Price: Why Volume Deserves a Closer Look

Within the framework of technical analysis, trading volume has long been regarded as a core metric for verifying the authenticity of price movements. Professional traders often incorporate volume analysis into their daily decision-making process, because while price can be driven by short-term capital, the market consensus reflected in volume is far harder to fake. Whether the instrument is a stock, a currency pair or a futures contract, understanding the logic of reading volume marks a dividing line between amateur and professional trading.

It should first be made clear that volume does not exist in isolation as a mere figure. Its significance derives from mutual corroboration with price: the same high-volumecandlestickcan carry entirely opposite meanings depending on whether it appears at a low or a high. Accordingly, the discussion of how to read volume in this article is always built on the premise of the "price-volume relationship", rather than on the absolute level of volume alone.

Defining Volume and Three Dimensions of Observation

Trading volume refers to the total quantity of a given financial asset bought and sold within a specific period. Behind this seemingly simple figure lies the sentiment and intent of market participants. Volume analysis can reveal both the state of market liquidity and the degree to which investors endorse the prevailing price level.

In practice, reading volume typically revolves around three dimensions:

1. The confirming relationship between volume and price trend, used to judge whether a trend is supported by capital.

2. The intrinsic link between volume and market volatility, used to assess the liveliness and continuity of price action.

3. The role of volume at key price levels, used to verify the reliability of support and resistance.

Volume in the Forex Market Is Actually Different from Stocks

To understand volume correctly, one must first recognise a fundamental difference: forex is a decentralised over-the-counter market that lacks a mechanism, such as a stock exchange, for centrally matching orders and recording all transactions. Every trade takes place between a buyer and a seller, within a vast network made up of banks, brokers, institutions and individual investors. As a result, no single broker or data provider can capture the true total trading volume of the global forex market.

The "volume" that many traders see onMT4andMT5is, for forex instruments, mostly tick volume rather than actual traded volume. Tick volume refers to the number of price changes for a given currency pair within a specific period, with each price movement represented as a single unit on the chart. The more frequently the price moves, the more active the market is, and the higher the tick volume rises accordingly.

In other words, forex traders are observing "activity" rather than "trade quantity". Understanding this distinction is the first step to avoiding the misuse of data. Research and practical experience show that tick volume is highly correlated with real trading volume on major currency pairs, and can therefore still serve as an effective proxy for gauging the level of market activity.

Comparing Tick Volume and Real Trading Volume

To avoid confusing several concepts that are easily treated as synonyms, the table below sets out their sources, meanings and applicable contexts side by side:

Why Volume Affects Your Win Rate

From forex to gold, indices and CFDs, most traders tend to focus solely on price when judging market direction, yet what truly determines whether a move can continue is often volume. The 2025 forex market offers a striking example: from the start of the year, there were repeated strong-trend days on which price and volume moved in the same direction, most notably when US dollar-driven policy changes intersected with geopolitical risk. Market volatility rose markedly, safe-haven demand climbed in tandem, and trading density and activity were pushed higher.

This trend is corroborated by authoritative statistics. The Bank for International Settlements' triennial survey showed that in April 2025, global average daily forex turnover reached approximately USD 9.6 trillion, up around 28% on 2022 — the highest reading since records began in 1986 — with the increase largely reflecting the high volatility triggered by trade-policy changes that month. (Source: Bank for International Settlements, OTC foreign exchange turnover in April 2025, published: 2025-09-30)

For investors, reading volume is not merely an introductory exercise in technical analysis; it is also a line of defence against buying high and selling low, and against being caught out by false breakouts.

Eight Market Signals for Interpreting Volume

The following breaks the price-volume relationship down into eight common combinations. Each combination corresponds to a specific market meaning, allowing traders to distinguish genuine trends from false ones and adjust their positions accordingly.

1. Price up, volume up: a price rise accompanied by a moderate increase in volume usually indicates that the uptrend is widely endorsed and that the bulls have sufficient momentum; a high-volume breakout through a key resistance level carries a higher probability of an extended move.

2. Price up, volume down: a price rise on shrinking volume often signals a lack of upward momentum. This price-volume divergence warrants particular caution; if it coincides with a long upper shadow, it may be a precursor to a trend reversal, and chasing the price should be approached more carefully.

3. Price down, volume up: a marked increase in volume as price falls usually indicates heavy selling pressure and a strong bearish advance. Investors' eagerness to exit tends to accelerate the decline, and rebounds are largely viewed as weak pullbacks.

4. Price down, volume down: a price fall on decreasing volume may mean that selling pressure is gradually exhausting itself, making a technical rebound likely. At such times the market is often in a wait-and-see phase, awaiting a new directional breakout.

5. Volume surging at a key level: a spike in volume must be read in conjunction with the price location — high-volume action at a high may be a distribution signal, while high-volume action at a low may be an accumulation opportunity, and the ability to judge this must be honed through real trading experience.

6. Price-volume divergence: price sets a new high but volume fails to keep pace; such divergence is often an important warning of a trend reversal and needs to be cross-checked against other signals.

7. Volume confirmation at support and resistance: at key price levels, changes in volume can verify the reliability of the level. A high-volume rebound usually confirms that support is effective, while a high-volume break confirms that resistance is effective.

8. Volume confirmation of a breakout: a genuine breakout is usually accompanied by a marked increase in volume; a breakout without volume is less credible, and this is the most basic principle of volume confirmation.

Common Volume Indicators and Their Use Cases

Volume signals need tools to carry them. The following three indicators cover trend confirmation, range screening and price anchoring, and together form a fairly universal combination for forex and CFD trading.

On-Balance Volume (OBV)

On-Balance Volume was systematically set out by Joseph Granville in his 1963 work Granville's New Key to Stock Market Profits. Granville was a well-known American financial analyst who argued that trading volume is the primary driving force behind market movements, likening volume to the steam that propels a train forward. He once said:

"Volume is the steam that drives the market's engine."

This indicator uses a cumulative path of "add volume when price rises, subtract volume when price falls" to observe the capital advance behind a trend. If price sets a new high while OBV fails to do the same, this constitutes a price-volume divergence — an early warning in the context of reading volume. Because forex lacks centralised transaction data, tick volume is used in practice in place of real trading volume in the calculation.

Money Flow Index (MFI)

The Money Flow Index combines price and volume and is an oscillator-type indicator, well suited to screening for false breakouts during consolidation or at the edges of a trading range. When the reading enters a high or low zone, it often signals an excessive expansion or exhaustion of short-term momentum.

Volume-Weighted Average Price (VWAP)

The Volume-Weighted Average Price weights traded prices by volume to produce an anchoring line reflecting a "fair price". Although forex volume is mostly tick volume, this indicator can still provide a reference in intraday mean-reversion strategies. In practice, "close to this average price with shrinking volume" can be treated as a weak rebound, and "far from this average price with rising volume" as an extension, thereby turning the reading of volume into clear rules for taking action.

Two Volume Case Studies from 2025

Abstract rules need to be tested against real market conditions. The following two scenarios from 2025 correspond respectively to the two common challenges of "identifying a genuine breakout" and "handling a high-level, low-volume range".

1. The Asian FX rally week: in early May 2025, Asian currency markets experienced sharp volatility amid a resonance of policy and capital flows, with some currencies strengthening sharply in a single session. Reviewing the intraday volume, the pullback phases of the relevant currency pairs showed price down with volume up and a run of long bearish candles, accompanied by key price levels being broken on high volume — a genuine bearish advance rather than a false breakdown. In this scenario, the conclusion from reading volume is that rebounds are mostly weak pullbacks, and the strategy should be primarily trend-following.

2. US dollar-driven event days: after the release of major data or a policy statement, where price sets a new high but volume fails to confirm, this is often the tail end of news-driven trading. The Bank for International Settlements' survey showed that during turbulent periods in April 2025, corporate clients in fact scaled back their forward forex trading, avoiding the sharp volatility of the early phase, which made high-level, low-volume ranges more likely to appear once the news had landed. Here, reading volume favours reducing exposure and waiting, only considering chasing the move once volume expands again. (Source: Bank for International Settlements, OTC foreign exchange turnover in April 2025)

Building Volume into Your Risk Framework

Volume is not only an entry signal; it can also be embedded into position management and risk control. The following three-tier position approach maps volume confirmation and price-volume divergence onto the two actions of adding to a position and reducing risk respectively.

• Starter position: establish only a pilot position on a high-volume breakout or high-volume breakdown — for example, when OBV sets a new high alongside a bullish breakout, confirming a genuine inflow of capital.

• Add-on position: add only on the condition that a pullback holds a key moving average or the Volume-Weighted Average Price and volume is shrinking, avoiding blindly adding when volume spikes at a high.

• Profit-taking position: when price rises on falling volume or a price-volume divergence appears, prioritise reducing exposure over adding to it, keeping the initiative on the risk curve in your own hands.

Once this logic is internalised — volume confirmation corresponds to adding, price-volume divergence corresponds to reducing risk — entries and exits gain a quantifiable basis rather than relying on in-the-moment emotion. As for the compounding accumulation of forex tick volume, the calculation logic of OBV can be expressed as:

The day's OBV value is written as

Today's OBV = Yesterday's OBV + directional coefficient × the day's volume

where the directional coefficient is positive when the closing price is higher than the previous day's, and negative otherwise.

Frequently Asked Questions on How to Read Volume