portfolioData(data, spec = portfolioSpec())## S3 method for class 'fPFOLIODATA':
show(object)
fPFOLIODATA as returned by the function
        portfolioData.fPFOLIOSPEC, the specification to be 
        modified, by default the default of the function portfolioSpec().portfolioStatistics
returns a named list of estimated mean $mu and covariance 
    $Sigma statistics, from a multivariate time series of assets.
    
portfolioData
returns a named list of the time series $series and the 
    portfolio $statistics as returned by the function
    portfolioStatistics.