Trading volume is the number of shares or contracts exchanged during a particular period. A daily volume figure tells you how much activity occurred, not whether the activity was bullish or bearish by itself.
Reading volume
Volume that is higher than usual can show increased attention or participation. Traders often compare volume with price movement to assess whether a move has broad support.
Important caution
Volume varies by security and time of day. Compare it with the symbol's own history and consider liquidity before making conclusions.
