High volume can indicate market strength, but volume is relative. Thirty million in traded shares doesn't mean much if the average daily volume is higher. However, a volume spike to thirty million is a different story. Volume spikes are a sign of piqued market interest, but their impact can be fleeting. Take GameStop, for example. It has seen spikes in trading volume, but they don't last, nor the high share price they created. A sustained increase in volume is a sign of market strength that can sustain a ra ...