Volume records trading activity in a defined instrument, feed and period. It adds information to price, but does not reveal every participant's identity, motivation or conviction. High volume alone cannot distinguish new long positions from short covering or prove a breakout will continue.

Establish What the Number Counts

For a traded share or futures contract, volume normally counts units transacted. It is not a count of unique people: one participant can trade repeatedly, and every completed transaction has two sides.

Check the source, venues, session and units. Some feeds provide tick volume, a count of price updates rather than traded units. A broker-specific FX feed should not be treated as total global FX trading activity. TradingView's volume-profile documentation illustrates why the volume type depends on the symbol and data source.

Compare Like Periods

A volume bar may be coloured according to its price candle. A green bar is not necessarily all buying at the ask, and a red bar is not all selling at the bid. Check the chart's rule.

Compare complete bars with complete bars. For intraday relative volume, define a baseline using comparable times within the session; comparing the opening burst to an arbitrary quiet interval can mislead. A partial day's volume is not directly comparable with a full-day average.

Suppose a completed interval has 20,000 units against a defined comparable-interval average of 10,000. Relative volume is 2. That calculation establishes unusual activity under the chosen baseline, not a probability that price will move up.

Make Volume a Testable Condition

You might test a breakout rule with and without a relative-volume threshold. Keep the price rule, fills and costs consistent, then compare missed winners as well as avoided losses. Selecting only attractive high-volume breakouts cannot establish an improvement.

Likewise, a rise on lower volume does not necessarily forecast reversal. Record the observation without inventing an institutional accumulation or distribution story from aggregate bars.

Liquidity Needs More Than a Daily Total

A daily share-volume threshold does not guarantee narrow spreads or enough immediately available size for your order. Inspect current quotes, depth where available, order size and the potential effect of a halt or news event.

Volume profile groups activity by price instead of time. It is another view of the chosen data, not a map of orders guaranteed to remain available on a future revisit.

Risk Disclaimer: Trading involves substantial risk of loss. Past performance is not indicative of future results. See our full risk disclaimer.