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and volatility in contrast to the exogenously assumed constant mean and volatility in many credit risk models. We consider … attenuated (amplified) market volatility and risk premium, but the market value is always higher in economic downturns, and lower …
Persistent link: https://www.econbiz.de/10005788927
We solve a mean-variance optimisation problem of a defined contribution pension scheme in the accumulation phase. The financial market consists of: (i) the risk-free asset, (ii) a risky asset following a GBM, and (iii) a bond driven by a stochastic interest rate following the Vasicek [1977]...
Persistent link: https://www.econbiz.de/10010862060
the expected asset returns from the expected portfolio return, ii) the assets' volatility and iii) the portfolio … volatility. At the same time, they decrease with the covariance between the assets and the portfolio. Furthermore, I propose …
Persistent link: https://www.econbiz.de/10010939530
This paper constructs an alternative investment strategy to portfolio optimization model in the framework of the Mean–Variance portfolio selection model. To differentiate it from the ubiquitously applied Mean–Variance model, which is constructed on an assumption that returns are normally...
Persistent link: https://www.econbiz.de/10011259339
We provide a Matlab quadratic optimization tool based on Markowitz's critical line algorithm that significantly outperforms standard software packages and a recently developed operations research algorithm. As an illustration: For a 2000 asset universe our method needs less than a second to...
Persistent link: https://www.econbiz.de/10005212469
The insurance linked securities (ILS) market is an increasingly important alternative asset class for which risk and return analysis differs from other asset classes. Measures of portfolio risk and return for an ILS portfolio are based on the expected losses and expected excess returns over the...
Persistent link: https://www.econbiz.de/10010551698
We consider the portfolio selection problem in the accumulation phase of a defined contribution pension scheme in continuous time, and compare the mean-variance and the expected utility maximization approaches. Using the embedding technique pioneered by Zhou and Li (2000) we first find the...
Persistent link: https://www.econbiz.de/10008635813
This article concerns the problem of optimal portfolio selection. The objective of this paper is to indicate the best method and criteria for optimal portfolio selection. In order to achieve the objective six models including such optimization criteria as mean, variance, skewness, kurtosis and...
Persistent link: https://www.econbiz.de/10010667202
A popular argument states that most of the diversification in a portfolio can be obtained with a rather small number of securities. In this paper we present three algorithms to approach the underlying NP-hard problem of portfolio optimization with a cardinality constraint. All three of these...
Persistent link: https://www.econbiz.de/10005537757
We propose a novel portfolio selection approach that manages to ease some of the problems that characterise standard expected utility maximisation. The optimal portfolio is no longer defined as the extremum of a suitably chosen utility function: the latter, instead, is reinterpreted as the...
Persistent link: https://www.econbiz.de/10005413052