Advance-Decline Volume Percent

Advance-Decline Volume Percent (AD Volume Percent) is a breadth indicator
that measures the percentage of Net Advancing Volume for a particular group
of stocks, such as an index or ETF. Net Advancing Volume equals the volume
of advances less the volume of declines. AD Volume Percent equals Net Advancing
Volume divided by total volume for the group. AD Volume Percent fluctuates
between -100% and +100%.