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Technical Studies Reference


Accumulation / Distribution - Williams

This study computes the Accumulation/Distribution Index, which was created by Bill Williams.

Let the High Price, Low Price, Closing Price, and Volume at Index \(t\) be denoted as \(H_t\), \(L_t\), \(C_t\), and \(V_t\), respectively. We denote the Accumulation / Distribution - Williams at Index \(t\) as \(WAD_t\), and we compute it for \(t \geq 1\) as follows.

\(\displaystyle{WAD_t=\left\{ \begin{matrix} WAD_{t-1} + C_t - \min\{L_t, C_{t - 1}\} & C_t > C_{t - 1} \\ WAD_{t - 1} & C_t = C_{t - 1} \\ WAD_{t-1} + C_t - \max\{H_t, C_{t - 1}\} & C_t < C_{t - 1} \end{matrix}\right .}\)

Note: Accumulation / Distribution - Williams is initialized to \(0\) at \(t = 0\). This value is stored internally, but is not returned as output.

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Accumulation_Distribution_-_Williams.42.scss


*Last modified Friday, 05th January, 2018.