Volume analysis: the hidden indicator

May 25, 2026 · 4 min read

Volume is the number of shares traded in a given period. It confirms the strength of a price move. The basic rule is that high volume means conviction while low volume means uncertainty. A volume spike on a drop is potentially a buy signal. When a stock drops 3-5% on volume twice higher than average, institutional investors are selling. But high-volume selloffs often mark the bottom. The panic selling exhausts itself and the stock recovers. Watch for RSI below 30 combined with a volume spike. A volume spike on a rise provides confirmation. When a stock breaks above resistance on high volume, the breakout is more likely to hold. Low-volume breakouts often fail and reverse. Low volume is a warning sign. If a stock is rising but volume is declining, the rally is losing steam. Smart money is not participating. TradewithAI calculates the volume ratio, which is today's volume divided by the 20-day average. A ratio above 2.0 triggers a Volume Spike alert. Combined with price direction, this helps identify institutional buying and selling. The best buying opportunities often come with ugly combinations: price dropping, volume spiking, and RSI oversold. It feels scary but that fear is exactly why the price is low.