Volume As A Confirmation Tool

Volume is a ratio, never a raw number

Volume counts how much traded in a period. On its own that count is meaningless, because 11,500 contracts is enormous on one instrument at one hour of the day and thin on another. The only reading that carries information is the comparison: this bar's volume against a recent average for this market at this time.

So the first thing to put on the chart is not volume, it is a moving average of volume, normally 20 periods. Every bar then becomes a multiple. The bar is at 2.7 times average, or 0.7 times, and that number travels across instruments and sessions in a way the raw count never does.

Two breakouts at 2.7x and 0.7x average

Take a level that has capped price three times at 1.0900. The 20-bar average volume on this chart is 4,200 contracts.

In the first case, price closes through 1.0900 on a bar that trades 11,500 contracts. That is 2.7 times the recent average. A lot of participants transacted at and above the level, which means the breakout was not a thin drift: it was met with real activity, and a substantial number of positions now exist above the old ceiling.

In the second case, the identical price move happens on 2,900 contracts, 0.7 times average. The chart looks the same. The candle looks the same. But almost nobody traded it, which is consistent with a move that happened because a few orders pushed through a quiet book rather than because opinion changed. Those are the breakouts that are unwound within a few bars, because there is very little sitting above the level to defend it.

Neither case is a rule. Plenty of high-volume breakouts fail and plenty of quiet ones run. What the ratio gives you is a way to grade the same price event, and grading it changes how much you risk on it rather than whether you take it at all.

Declining volume inside a trend

The second standard use is the opposite comparison. A trend that keeps making new highs while each successive leg trades less volume than the one before is a trend running on fewer participants. It does not mean the trend ends tomorrow. It means the fuel behind it is thinning, and thin advances reverse faster when they do reverse.

The same logic reads a pullback. If price retraces 40 per cent of an advance on volume well below average, the selling is not energetic, which is consistent with a pause rather than a turn. If the same retracement trades 1.8 times average, more participants are stepping the other way than were pushing the trend.