The integration of quantitative asset allocation models and the judgment of portfolio managers and analysts (i.e. qualitative view) dates back to a series of papers by Black and Litterman in the early 1990s. In this paper we improve the classical Black-Litterman model by applying more realistic...

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There are many conflicting interpretations of security prices and price determination in financial markets. They range from academic theories based on efficient markets and rational expectations hypotheses, to more traditional methods of fundamental analysis, to theories of "value" and "growth"...

Empirical studies and much marketplace opinion have it that the spread between private money market rates and the U.S. Treasury bill rate of comparable maturity is due to differential default risk, liquidity risk, and relative supplies. This paper presents an argument and empirical evidence that...

The purpose of this paper is to introduce a stochastic volatility model for option pricing that exhibits Lévy jump behavior. For this model, we derive the general formula for a European call option. A well known particular case of this class of models is the Bates model, for which the jumps are...

For non-US stocks of firms in the G7 countries, we empirically test the new issues puzzle -- stocks of firms that issue new equity are, on average, very poor investments relative to various benchmarks -- by market capitalization. Only for the United Kingdom do we find evidence for a...

Surprisingly, a positive risk–return relationship has not been consistently observed for the traditional GARCH in the mean model in other studies. In this paper, we employ a combination of the jump diffusion and GARCH model in the mean equation to test the risk–return relationship for U.S....

In spite of their importance, third or higher moments of portfolio returns are often neglected in portfolio construction problems due to the computational difficulties associated with them. In this paper, we propose a new robust mean–variance approach that can control portfolio skewness and...