Accumulation/DistributionThe accumulation distribution is calculated by subtracting the close from the open, then dividing this by the high minus the low and multiplying that by the volume. It acts like on balance volume, but additionally contains a factor allowing it to describe how effective that volume has been in moving the price.
Accumulation Distribution can be used to find turning points in the market, which will be found when a divergence occurs. I.e. when the price makes a higher high than its last, but the Acc/Dst makes a lower high this time, or when the price makes a lower low than the last, but Acc/Dst makes a higher low.