CDaR.beta {PerformanceAnalytics} | R Documentation |
Conditional Drawdown beta
Description
The conditional drawdown beta is a measure of capturing performance under market drawdowns and it is given by
the ratio of the average rate of return of the instrument over time periods corresponding to the (1-p)T
largest drawdowns of the benchmark portfolio.
The difference in CDaR and standard beta boils down to the fact that the standard beta accounts for the fund returns over the whole return history, including the upside while CDaR beta focuses only on market drawdowns.
Usage
CDaR.beta(R, Rm, p = 0.95, weights = NULL, geometric = TRUE, type = NULL, ...)
Arguments
R |
an xts, vector, matrix, data frame, timeSeries or zoo object of asset returns |
Rm |
an xts, vector, matrix, data frame, timeSeries or zoo object of benchmark returns |
p |
confidence level for calculation ,default(p=0.95) |
weights |
portfolio weighting vector, default NULL, see Details |
geometric |
utilize geometric chaining (TRUE) or simple/arithmetic chaining (FALSE) to aggregate returns, default TRUE |
type |
(Optional) Overrides the p parameter. If "average" then p = 0 and if "max" then p = 1 |
... |
any passthru variable. |
Author(s)
Tasos Grivas <tasos@openriskcalculator.com>,Pulkit Mehrotra
References
Zabarankin, M., Pavlikov, K., and S. Uryasev. Capital Asset Pricing Model (CAPM) with Drawdown Measure.Research Report 2012-9, ISE Dept., University of Florida,September 2012.
See Also
Examples
data(edhec)
CDaR.beta(edhec[,1],edhec[,2])
CDaR.beta(edhec[,1],edhec[,2],type="max")
CDaR.beta(edhec[,1],edhec[,2],type="average")