Volume Analysis For Confirmation
Volume describes how many participants turned up, which is information price alone cannot carry, and it says nothing at all about direction.
Volume measures how much changed hands in a period and is used to judge how much participation sits behind a price move. A breakout on a third of normal volume clears the level with few participants involved, while one on more than twice normal volume means a large amount was absorbed at that price. Volume carries no directional information, so it works as a filter rather than a signal.
What to remember
- Forex volume is tick volume, a proxy. There is no central exchange, so platforms report price updates from their own feed rather than transacted size.
- Compare an hour against the same hour on previous days, because volume has a strong intraday shape that makes raw comparisons meaningless.
- A spike marks the start of moves and the end of them. Breakouts and capitulation both show heavy volume and mean opposite things.
- Volume cannot produce an entry, a stop or a target, so any system that appears to be built on it is really built on price.
Lesson 17 of 24 in Trading strategies
A breakout on a third of the usual participation
Volume counts how much changed hands in a period. On its own it says nothing about direction, which is why it is used as a second opinion on a move that price has already made rather than as a signal in itself.
Here is the comparison that makes it concrete. A stock has averaged 2.1 million shares per hour through the London morning for a fortnight. It breaks a resistance level that has capped it three times, and the breakout hour trades 680,000 shares, roughly a third of normal. The same stock breaks the same level a week later on 4.8 million shares.
- The quiet break tells you the level was cleared without many participants being involved. It may still run. It also means very little was absorbed at that price, so there is little to hold price up if it comes back.
- The heavy break tells you a large amount of stock changed hands at and above the level. Those holders have a position to defend, which is a mechanical reason the level may now act as support.
Neither reading is a prediction. What the volume adds is a sense of how much of the market actually participated, which is information price alone cannot carry.
Spot forex volume is not what you think it is
This needs saying early because it changes how the rest applies. Spot foreign exchange has no central exchange and no consolidated tape, so nobody can see total transacted volume. What a forex platform labels volume is almost always tick volume: the number of price updates in a period, from that broker's own feed.
Tick volume correlates reasonably well with actual activity, since busy markets update more often. But it is a proxy, it differs between brokers, and it can be distorted by feed behaviour that has nothing to do with trading. Treat it as a rough activity gauge rather than a measurement. Futures contracts on currencies do report real exchange volume, which is why some currency traders watch those instead.
Four readings that carry some information
| Observation | Common reading | The caveat |
|---|---|---|
| Move with rising volume | Broader participation behind it | Says nothing about how long it lasts |
| Move on unusually low volume | Fewer participants involved | Low volume trends do persist, especially in quiet seasons |
| Breakout with a volume spike | More credible than a quiet one | Spikes also mark exhaustion at the end of moves |
| Volume drying up in a trend | Momentum possibly fading | Can continue for weeks before anything changes |
The recurring caveat is the same in each row: volume describes participation, not intent, and certainly not direction. A 4.8 million share hour tells you a lot of shares moved. It does not tell you whether the buyers or the sellers were the motivated side.
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Volume Analysis For Confirmation: questions
Does volume matter in forex trading?
What does high volume on a breakout mean?
Can you trade using volume alone?
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