portvar

Variance for portfolio of assets

Syntax

V = portvar(Asset,Weight)

Arguments

Asset	M-by-N matrix of M asset returns for N securities.
Weight	R-by-N matrix of R portfolio weights for N securities. Each row of Weight constitutes a portfolio of securities in Asset.

Description

V = portvar(Asset,Weight) returns the portfolio variance as an R-by-1 vector (assuming Weight is a matrix of size R-by-N) with each row representing a variance calculation for each row of Weight.

V = portvar(Asset) assigns each security an equal weight when calculating the portfolio variance.

References

Bodie, Kane, and Marcus. Investments. Chapter 7.

Version History

Introduced before R2006a