On-Balance Volume (OBV)
Overview
On-Balance Volume tracks cumulative buying and selling pressure by adding volume on up days and subtracting volume on down days — it often leads price breakouts by showing institutional accumulation or distribution. OBV divergence is one of the strongest early-warning signals available, especially when confirming breakout setups in stocks and crypto. Pair OBV with the Volume Profile for a complete picture of where institutional money is flowing. Browse our indicators hub to discover more volume-based analysis tools.
How It Works
If today's close > yesterday's close: OBV = previous OBV + today's volume. If today's close < yesterday's close: OBV = previous OBV − today's volume. If close is unchanged, OBV stays the same. The absolute value is less important than the trend.
Key Signals
- Rising OBV with flat or falling price = accumulation (bullish divergence).
- Falling OBV with flat or rising price = distribution (bearish divergence).
- OBV breaking to new highs confirms price breakouts.
- OBV trendline breaks can precede price trendline breaks.
Common Mistakes
- Focusing on the absolute OBV number — only the trend matters.
- Using OBV on low-volume markets where a few large trades distort the reading.
- Ignoring OBV divergences that persist for weeks — the longer the divergence, the bigger the eventual move.
More Volume Indicators
Chaikin Oscillator
The Chaikin Oscillator applies the <a href="/academy/indicators/macd" class="text-primary hover:underline">MACD</a> formula to the <a href="/academy/indicators/accumulation-distribution" class="text-primary hover:underline">Accumulation/Distribution</a> line, producing a momentum reading of money flow that leads price turns. It is particularly useful for validating breakout strength in <a href="/market/stocks" class="text-primary hover:underline">stocks</a> and spotting divergence before significant moves in <a href="/market/crypto" class="text-primary hover:underline">crypto</a>. Browse our <a href="/academy/indicators" class="text-primary hover:underline">indicator guide library</a> to pair the Chaikin Oscillator with trend-following tools.
Volume Profile — Trading with Market Structure
Volume Profile displays the total volume traded at each price level over a specified period, revealing where institutional activity is concentrated and identifying high-probability support/resistance zones. It is a favourite tool of professional traders across <a href="/market/stocks" class="text-primary hover:underline">stocks</a> and <a href="/market/crypto" class="text-primary hover:underline">crypto</a>, and works best on a dedicated <a href="/tools/platforms/tradingview" class="text-primary hover:underline">charting platform</a> like TradingView. Combine Volume Profile levels with your existing <a href="/strategies" class="text-primary hover:underline">trading strategies</a> for precision entries at POC, VAH, and VAL. Compare platform features in our <a href="/best/best-charting-platforms" class="text-primary hover:underline">best charting platforms</a> guide to find the right tool for volume analysis.
VWMA — Volume Weighted Moving Average
The Volume Weighted Moving Average weighs each price bar by its volume before averaging, so high-volume bars have more influence on the average than low-volume bars. VWMA gives traders a truer picture of the "agreed-upon" price compared to a standard <a href="/academy/indicators/simple-moving-average" class="text-primary hover:underline">SMA</a>. It is especially useful in <a href="/market/stocks" class="text-primary hover:underline">stock</a> and <a href="/market/crypto" class="text-primary hover:underline">crypto</a> trading on <a href="/tools/platforms/tradingview" class="text-primary hover:underline">TradingView</a>, and can be explored alongside other volume tools in our <a href="/academy/indicators" class="text-primary hover:underline">indicator guide library</a>.
Accumulation/Distribution Line
The Accumulation/Distribution (A/D) line uses both price and volume to assess whether a security is being accumulated (bought) or distributed (sold) — a refinement on <a href="/academy/indicators/on-balance-volume" class="text-primary hover:underline">OBV</a> that considers where price closes within the bar. A/D divergence is a powerful early signal for <a href="/market/stocks" class="text-primary hover:underline">stock</a> and <a href="/market/crypto" class="text-primary hover:underline">crypto</a> traders who want to spot institutional moves before the crowd. Integrate A/D analysis into your <a href="/strategies" class="text-primary hover:underline">trading strategies</a> alongside price structure for higher-confidence entries. Explore more volume tools in our complete <a href="/academy/indicators" class="text-primary hover:underline">indicator guide library</a>.