We explore the practitioners methodology of choosing time-dependent parameters to fit a bond model to selected asset prices, and show that it can lead to systematic mispricing of some assets. The Black-Derman-Toy model, for example, is likely to overprice call options on long bonds when interest...

Kurtosis in asset prices and returns has been so widely documented it hardly bears comment. Equally interesting, in our view, is the relatively modest kurtosis in consumption growth and inflation. The question is how to reconcile the two: Is kurtosis in asset prices inherited from macroeconomic...

We analyze the specifications of option pricing models based on time-changed Levy processes. We classify option pricing models based on the structure of the jump component in the underlying return process, the source of stochastic volatility, and the specification of the volatility process...

We analyze the specifications of option pricing models based on time-changed Levy processes. We classify option pricing models based on the sucture of the jump component in the underlying return process, the source of stochastic volatility, and the specification of the volatility process itself....

In 1993, the Chicago Board of Options Exchange (CBOE) introduced the COBE Volatility Index (VIX). This index has become the de facto benchmark for stock market volatility. On September 22, 2003, the CBOE revamped the definition and calculation of the VIX, and back-calculated the new VIX up to...

We document the behavior of over-the-counter currency option prices across moneyness, maturity, and calendar time on two of the most actively traded currency pairs over the past eight years. We find that the risk-neutral distribution of currency returns is relatively symmetric on average....

We assume the short-term rate to revert towards a central tendency which in, turn, is stochastically changing over time. We impose minimal restrictions on the joint behavior of the short-term rate and the central-tendency factor, and derive implications for the term structure of interest rates....

We assume that the instantaneous riskless rate reverts towards a central tendency which, in turn, is changing stochastically over time, and we derive a model of the term structure of interest rates. Our term-structure model implies that a linear combination of any two rates can be used as a...

We assume that the instantaneous riskless rate reverts toward a central tendency which, in turn, is changing stochastically over time. As a result, current short-term rates are not sufficient to predict future short-term rates movements, as it would be the case if the central tendency was...

Perhaps the most puzzling feature of currency prices is the tendency for high interest rate currencies to appreciate when the expectations hypothesis suggests the reverse. Some have attributed this forward premium anomaly to a time-varying risk premium but theory has been largely unsuccessful in...