OBV (On-Balance Volume)

On-Balance Volume cumulates buying and selling pressure. Learn how a rising OBV with flat price signals accumulation ahead of a potential breakout.

What is OBV (On-Balance Volume)?

On-Balance Volume (OBV) cumulates volume directionally: it adds the period's volume on up days and subtracts on down days. Rising OBV means net buying pressure even if price doesn't yet reflect it. A bullish OBV divergence (OBV trending up while price stays flat or weak) is the classic accumulation signal — institutional buyers absorbing supply patiently before the breakout.

How Traders Use OBV (On-Balance Volume)

  • Rising OBV with flat price: accumulation — institutional buying without spiking price.
  • OBV new high while price lags: breakout often imminent.
  • Bullish OBV divergence: OBV up while price drifts down — strong reversal precursor.
  • OBV trend should match price trend: divergence is a warning of underlying weakness or strength.

Where We Use OBV (On-Balance Volume) in Our Penny Stock Scans

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