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Relative volume calculator
Compare today's activity with prior sessions at the same time.
SAME-TIME COMPARISON
A baseline before a conclusion.
Enter your volumes, or load a worked example.
- Historical average
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- Sessions compared
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- Historical median
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- Historical range
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RVOL measures participation, not price direction or the probability of a profitable trade.
YOUR NEXT STEP
Put volume in context.
Research unusual activity in VOLUME and catalysts in NEWS, with IPO, LONG and SHORT in the same account.
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THE WORKED EXAMPLE
Same clock. Better comparison.
Follow the volume calculation, check the baseline, and put the result in context.
Watch on YouTube ↗Sample inputs, not live market data. RVOL measures participation, not price direction.
Read the transcript
Unusual volume tells you that participation changed. It does not tell you which way price goes next. In this worked example, three million shares have traded by ten thirty. The average at ten thirty across ten prior sessions is one million shares. Three million divided by one million gives relative volume of three times. These are sample inputs, not live market data.
The comparison only makes sense when the baseline matches. Use the same ticker, session start, data source, and cutoff time. Comparing ten thirty today with full day volume answers a different question. Half days, halts, stock splits, missing data and unusual sessions can distort the result. Check the individual sessions, not just the average.
Next, investigate the context. Open the original news release or filing. Confirm its timestamp and what actually changed. Check liquidity, spreads and trading halts. If researching shorts, check borrow availability and cost with your broker. Define risk and what would disprove your idea before entering. Record the evidence and the eventual result, including fees and slippage. None of this guarantees a profitable trade.
The free JBOT relative volume calculator puts the arithmetic and checklist in one place. Enter today's cumulative volume and two to sixty prior sessions at the same cutoff. Calculate, compare the mean and median, and download the result. The research checklist can be printed. No account or market feed is required. Visit jbot-trader.com/relative-volume.asp. JBOT Trader also offers five paid research workspaces. This walkthrough is educational, not personalized investment advice. Trading can result in substantial losses.
RVOL = today's cumulative volume / mean of prior sessions' cumulative volume at the same cutoff.
A reading of 3x means three times your sample's average. Comparing a partial session with full-day totals answers a different question. Keep the data provider and session definition consistent; half-days, halts, splits and missing data can distort comparisons.
Method reference: TradingView ↗VOLUME + NEWS
Before the trade: a research checklist
jbot-trader.com/relative-volume.asp
Continue with the unusual-volume research guide
Educational research, not personalized investment advice. Inputs are not verified against a market feed. A small or unrepresentative sample can be misleading. Trading can result in substantial losses; no signal or simulation guarantees profits. Checklist selections are not saved.