Volume is the number of units traded in a period. It confirms price movements: rising prices on high volume = strong trend. Rising prices on falling volume = weak trend, possible reversal.
Price candles
OBV (On-Balance Volume)
Volume Rules
| 状況 | Meaning |
| Breakout + high volume | ✅ Confirmed breakout, likely sustainable |
| Breakout + low volume | ⚠️ False breakout possible |
| Decline + high volume | ⚠️ Strong selling pressure — possible trend reversal |
| Decline + low volume | ✅ Normal consolidation, trend intact |
On-Balance Volume (OBV): Cumulative indicator — adds volume on up candles, subtracts on down candles. OBV divergence (price rises, OBV falls) warns of possible reversal.