How Is Relative Volume Calculated?
Basic form: today’s volume divided by average daily volume—simple but misleading intraday because opening hour always exceeds midday. Time-of-day adjusted RVOL compares cumulative volume at 10:30 AM today to average cumulative volume at 10:30 AM over past N days—more accurate for intraday scans. Bar-level RVOL compares current five-minute bar volume to average for that bar slot. Values above 1.0 mean above normal; 2.0 means double typical. Platforms like Trade Ideas compute RVOL for scan alerts in real time.
Always know whether your RVOL is session cumulative or single-bar—mixing definitions breaks rule consistency.
Why Is RVOL Critical for Day Traders?
Unusual volume precedes many intraday trends—earnings leaks, sector news, analyst upgrades. RVOL above 1.5–2.0 at breakout through opening range or prior day high adds confirmation. Low RVOL midday drift fades often—avoid chasing without participation. Pre-market RVOL versus average pre-market separates serious gap setups from thin gaps that fade at bell. Pair RVOL spike with catalyst in news feed—not every volume spike is tradable without reason.
First 5 minutes RVOL can exceed 5.0 routinely—wait for your strategy’s defined time window before filtering.
How Do Swing Traders Use RVOL?
Daily RVOL: today’s share volume divided by 30-day average—flags institution days on dailies. Breakout daily close with RVOL 2+ often worth next-day continuation watch if trend intact. Multi-day RVOL elevation supports swing hold; single-day spike without follow-through may be event noise. Combine with dollar volume so price level does not distort importance of share multiple alone.
Earnings day RVOL distort averages for weeks—note ex-earnings when interpreting 30-day denominator.
What RVOL Thresholds Should You Standardize?
Write fixed numbers: opening range breakout requires RVOL ≥ 2.0 by 10 AM; pullback entry requires RVOL ≥ 1.2 on trigger bar. Adjust by market cap—large caps rarely hit 3.0 except on news; small caps often do. Avoid moving threshold after missed trade. Log RVOL at entry and exit—winners often show sustained elevation through hold period.
When RVOL high but price flat, absorption or hidden selling may occur—read price action, not RVOL alone.
How Does RVOL Integrate With Other Indicators?
RVOL plus TI Strength or MACD cross plus VWAP hold forms confluence stack on Trade Ideas scans. RSI overbought with rising RVOL suggests momentum continuation not fade. Low RVOL at Bollinger upper tag favors mean reversion short. ADX rising with RVOL rising describes trend day developing—prioritize trend rules over fade rules.
Build scan: minimum average volume, minimum RVOL, price above VWAP—three liquidity and participation gates before pattern logic.