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Economic Value Of Modeling Covariance Asymmetry For Mixed-Asset Portfolio Diversifications, Jian Zhou, Joseph Nicholson
Economic Value Of Modeling Covariance Asymmetry For Mixed-Asset Portfolio Diversifications, Jian Zhou, Joseph Nicholson
Department of Accounting and Finance Faculty Scholarship and Creative Works
Mounting evidence from the literature points to the existence of covariance asymmetry for financial assets. That is, conditional volatility and correlation of financial returns tend to rise more after negative return shocks than after positive ones of the same size. This paper extends the literature by investigating whether investors could gain significant economic benefits from incorporating the feature into mixed-asset portfolio diversifications. We carry out the investigation for a portfolio consisting of US stock, REITs, and the risk-free asset, and find that covariance asymmetry is indeed a value-added feature for mixed-asset diversifications. This conclusion is robust to different portfolio performance …