Volume is the most underrated and most important aspect of technical analysis. Price tells you WHAT happened, but volume tells you WHO was behind the move and HOW SERIOUS they are. A breakout on low volume is a whisper — it's unreliable. A breakout on 3x average volume is a shout — the market is making a statement. Professional traders never make a trade without checking volume.
Key points
Volume Confirms Price: Rising price + rising volume = genuine strength (healthy uptrend). Rising price + declining volume = questionable rally (potential distribution)
Volume Leads Price: Volume often picks up before the breakout happens. A stock consolidating with gradually increasing volume = smart money accumulating before the move
Climactic Volume: Extreme volume spike (5-10x average) often signals a climax — the end of a move, not the beginning. Buying climax = potential top. Selling climax = potential bottom
Delivery Volume: In Indian markets, delivery % is crucial. High delivery (40%+) = genuine buying/selling (positional interest). Low delivery (<25%) = intraday speculation
OBV (On-Balance Volume): Cumulative volume indicator. Rising OBV = accumulation. Falling OBV = distribution. If price is flat but OBV is rising, a breakout may be coming
Volume at Breakout: A valid breakout should have 1.5-2x average volume on the breakout day. Higher volume = more reliable breakout
Volume at Support: Heavy volume at support level = institutional buying (strong support). Light volume test of support = may not hold
Volume Dry-up: Declining volume during a consolidation/correction is actually BULLISH — it means sellers are drying up. Perfect condition for a breakout
VWAP (Volume Weighted Average Price): Institutional benchmark. Day traders use VWAP as key support/resistance. Price above VWAP = institutional buying zone
Pro tip — Here's a professional volume analysis framework for every trade: (1) Is volume increasing on up-days and decreasing on down-days? → Bullish. (2) Is volume increasing on down-days and decreasing on up-days? → Bearish. (3) Are breakouts accompanied by 2x+ average volume? → Valid. This simple framework filters out 80% of false signals.