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Full-Text Articles in Corporate Finance
Using Gmm To Flatten The Option Volatility Smile, Tom Arnold
Using Gmm To Flatten The Option Volatility Smile, Tom Arnold
Finance Faculty Publications
By using an over-identified Generalized Method of Moments (GMM) estimation procedure with careful consideration for data biases existing in the previous literature, parameters are estimated for a stochastic volatility jump diffusion option pricing (SVJ) model. The estimated parameters indicate a statistically significant highly negative infrequent jump process in the underlying security return distribution consistent with market crashes. When comparing to a stochastic volatility (SV) option pricing model, the SVJ is more robust but not always the superior model. The robustness of the models is further gauged by evaluating performance up to a year beyond the estimation data.
Do Option Markets Substitute For Stock Markets?, Tom Arnold, Gayle Erwin, Lance Nail, Terry D. Nixon
Do Option Markets Substitute For Stock Markets?, Tom Arnold, Gayle Erwin, Lance Nail, Terry D. Nixon
Finance Faculty Publications
Using a sample of cash tender offers occurring between 1993 and 2002, we find evidence that the options market has become the preferred venue for traders attempting to profit on anticipated announcements. Options offer advantages relative to stocks. Traders gain leverage by trading in options and multiple options contracts on an individual stock. The results of our study indicate that a substitution effect does exist. Abnormal volume in the option market replaces abnormal volume in the stock market prior to cash tender offer announcements, and this abnormal option volume precedes abnormal stock volume for targets with or without traded options.