Description Usage Arguments Details Author(s) References Examples
The pain index is the mean value of the drawdowns over the entire analysis period. The measure is similar to the Ulcer index except that the drawdowns are not squared. Also, it's different than the average drawdown, in that the numerator is the total number of observations rather than the number of drawdowns.
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an xts, vector, matrix, data frame, timeSeries or zoo object of asset returns |
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any other passthru parameters |
Visually, the pain index is the area of the region that is enclosed by the horizontal line at zero percent and the drawdown line in the Drawdown chart.
Pain index = sum(|D'i|/n)
where n is the number of observations of the entire series, D'_i is the drawdown since previous peak in period i
Matthieu Lestel
Carl Bacon, Practical portfolio performance measurement and attribution, second edition 2008 p.89, Becker, Thomas (2006) Zephyr Associates
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