Price is what happens. Volume is why it happened. A stock rising 3% on 10 million shares traded is a very different signal from the same 3% move on 100 million shares. Volume is the fuel behind price moves — and when the fuel runs out, moves tend to reverse. Understanding volume transforms how you read any chart.
OBV is a running cumulative total: add the day's volume when price closes up, subtract it when price closes down. The resulting line tracks whether volume is flowing into or out of a stock. OBV rising with price confirms the trend. OBV falling while price rises is a divergence — a warning that the move lacks conviction.
Climactic volume — an enormous spike far above average, often at a key support or resistance — frequently marks turning points. A selling climax occurs after a prolonged downtrend: price collapses on massive volume as panicking holders sell to whoever will buy. When that exhaustion volume appears, the sellers have been absorbed and the path of least resistance often shifts upward. The same logic in reverse produces a buying climax at tops.
| Price action | Volume | Signal |
|---|---|---|
| Rising | Rising | Healthy uptrend — confirmed |
| Rising | Falling | Weakening uptrend — watch for reversal |
| Falling | Rising | Distribution — selling pressure, bearish |
| Falling | Falling | Low-conviction pullback — may be buying opportunity |
| Breakout above resistance | High | Confirmed — high-probability continuation |
| Breakout above resistance | Low | False breakout risk — treat with scepticism |
Volume for RIP. duels: before picking a stock for a short-duration duel, check its recent volume relative to average. A stock already trading 3–5× normal volume on a news catalyst has momentum behind it — the move is more likely to extend. A stock moving on thin volume can reverse rapidly. Volume context is one of the most actionable pre-duel checks you can do in 30 seconds.
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