Stock Market Volume for NYSE, NASDAQ, DOW, and TOTAL US Markets
At TraderLion we track hour-over-hour volume to see if it is running ahead or behind versus prior day volume.
Each green bar on the chart presents a time interval (30 mins) and its volume. The volume for the current day should be compared to the prior day and prior week to see if it is a high volume day or a low volume day on a relative basis.
The charts update near Real-Time.