Volume without context is meaningless
A bar trading 500,000 shares tells you nothing on its own. For a stock that normally trades 2 million shares per bar, 500,000 is light — low participation, low conviction. For a stock that normally trades 100,000 shares per bar, 500,000 is extreme — something is happening.
Absolute volume numbers cannot be compared across tickers, across times of day, or across sessions. What matters is not how much volume — it is how much volume relative to what is normal for that ticker right now. That is what Relative Volume measures.
RVOL is a ratio. It has no units. A reading of 1.5 means the same thing on NVDA as it does on SPY — current volume is 50% higher than the recent average. The scale is universal. The meaning is consistent.
How it's calculated
The calculation is simple on purpose. Complexity here would obscure the signal.
A result of 1.0 means exactly average. Below 1.0 means lighter than normal. Above 1.0 means heavier. The ratio scales linearly — 2.0 is double average, 3.0 is triple, and so on.
The thresholds
Not all above-average volume readings are equal. The thresholds create a vocabulary for describing participation level:
Why the 5-bar window
A longer lookback — say 20 bars — would normalize volume against the whole session up to that point. That has its uses but creates a lag problem intraday. The first hour of a session often has different volume characteristics from the afternoon. A 20-bar average of morning volume would flag afternoon bars as abnormal even when they are perfectly normal for that time of day.
The 5-bar window solves this. It compares the current bar to the five bars immediately before it — the immediate context. If those five bars were already elevated, the threshold adjusts. If they were quiet, a single active bar stands out sharply. The signal is always relative to what just happened, not what happened an hour ago.
What high RVOL actually means
Volume is participation. When RVOL is high, more participants are active in that bar — more buyers, more sellers, or both. A price move on high RVOL has more hands behind it. A price move on low RVOL has fewer.
This matters because low-volume moves are fragile. They happen when the market is thin — few orders on either side — and a single participant can push price without real conviction. Those moves reverse when normal participants return. High-volume moves are stickier. The participation is real.
The practical consequence: a technical signal that fires on RVOL above 1.5 has a meaningfully different character than the same signal firing on RVOL below 1.0. Same pattern on the chart. Different underlying condition. RVOL is the filter that tells you which one you are looking at.
RVOL as a confirmation layer
Used alone, RVOL is not a trade signal. A bar can have extreme volume and go nowhere — absorption, a two-sided fight, a news reaction with no follow-through. RVOL confirms the quality of other signals. It does not replace them.
The combination that matters: a structural signal fires — a ♖Rook (TD line break), a Kijun cross, a compression resolving — and RVOL is elevated. The signal said something happened. RVOL says real participants were there when it did. That combination is the basis for the strongest intraday entries.
Without RVOL above threshold, a signal that looks clean on price alone is provisional. With RVOL above 1.5, the same signal has confirmation. Same chart. Different trade.
Why it matters for options
Options volume and equity volume are related but not identical. A spike in equity RVOL often precedes options activity — market makers adjust their hedges, premiums reprice, and spreads widen as the underlying becomes less predictable.
For options traders, equity RVOL above 1.5 during a compression resolution is a particularly useful reading. It means the breakout from the ♝Yellow Bishop setup attracted real participation — not a thin-market fake-out. The move has the volume to carry the premium repricing that makes the options position work.
On any chart
RVOL is available on every major platform. In TradingView, the built-in Relative Volume indicator computes it automatically. Set the lookback to 5 bars. Add horizontal lines at 1.2, 1.5, and 1.8 to mark the thresholds.
Watch the RVOL sub-pane alongside price. When a bar breaks a key level — a band, a session high, a Kijun cross — check the RVOL at the same moment. If it is above 1.2, the move has participation. If it is below 1.0, treat the signal as provisional until volume confirms.
RVOL does not predict. It describes. It is the answer to the question every intraday trader asks after every signal fires: was anyone actually there?