In this paper we show that it is invalid to use standard maximum likelihood procedures in estimating jump-diffusion models. The reason is that in jump-diffusion models the log-return is equivalent to a discrete mixture of N normally distributed variables, where N goes to infinity. Thus, from the...

This paper studies the returns from investing in index options. Previous research documents significant average option returns, large CAPM alphas, and high Sharpe ratios, and concludes that put options are mispriced. We propose an alternative approach to evaluate the significance of option...

This paper develops option-based estimators of the diffusion using the Estimating Function approach. The resulting estimators have a generic structure that applies to a wide class of state-time separable diffusions found in option pricing models. Our methodology differs from the related...

This paper proposes a characteristic function-based method to estimate the time-changed Levy models, which take into account both stochastic volatility and infinite activity jumps. The method facilitates computation and overcomes problems related to the discretization error and to the...

Stock market volatility clusters in time, carries a risk premium, is fractionally integrated, and exhibits asymmetric leverage effects relative to returns. This paper develops a first internally consistent equilibrium based explanation for these longstanding empirical facts. The model is cast in...

Many models of the term structure of interest rates rely on a continuous-time specification of the short rate process as one of their factors. Different parametric specifications for this process, often arbitrary and mutually exclusive, coexist in the literature. It is important to specify this...

A State Price Density (SPD) is the density function of a risk neutral equivalent martingale measure for option pricing, and is indispensible for exotic option pricing and portfolio risk management. Many approaches have been proposed in the last two decades to calibrate a SPD using financial...

We find out-of-sample predictability of commodity futures excess returns using forecast combinations of 28 potential predictors. Such gains in forecast accuracy translate into economically significant improvements in certainty equivalent returns and Sharpe ratios for a mean-variance investor....

The purpose of the paper is twofold. First, it aims at identifying when UK and European (France, Germany, Italy and Spain) Credit Default Swaps(CDSs) exhibit explosivity with respect to their past behaviors. Second, it seeks to quantify the dynamics of CDS volatility spillover effects...

Bu calismada gecelik kur takasi faizleri ile BIST Repo-Ters Repo Pazari’ndaki gecelik repo faizleri arasindaki iliski incelenmektedir. Soz konusu faizlerin Turkiye’de para politikasinin aktarim mekanizmasi icerisinde onemli bir yere sahip olmasi sebebiyle iki piyasa arasindaki iliskinin...