Computes covariance and CVaR portfolio risk.
covRisk(data, weights)
varRisk(data, weights, alpha = 0.05)
cvarRisk(data, weights, alpha = 0.05)
a multivariate time series described by an S4 object of class
timeSeries
.
a numeric vector of weights.
a numeric value, the confidence level, by default alpha=0.05
,
i.e. 5%.
Wuertz, D., Chalabi, Y., Chen W., Ellis A. (2009); Portfolio Optimization with R/Rmetrics, Rmetrics eBook, Rmetrics Association and Finance Online, Zurich.