Created by Mark Chaikin, the Volume Accumulation
Oscillator is the cumulative
volume adjusted by the difference between the close and the midpoint
of the day’s range. VAC = [C - (H + L) / 2] * V,
where C is the Close, H
is the High, L
is the Low, and V
is the Volume. The Volume
Accumulation Oscillator is the accumulation of the value A.