We develop a dual-control method for approximating investment strategies in incomplete environments that emerge from the presence of trading constraints. Convex duality enables the approximate technology to generate lower and upper bounds on the optimal value function. The mechanism rests on...

We consider the pricing of FX, inflation and stock options under stochastic interest rates and stochastic volatility, for which we use a generic multi-currency framework. We allow for a general correlation structure between the drivers of the volatility, the inflation index, the domestic...

Using daily caps and floors market prices throughout the years 1993 and 1994, we address the open question whether spot or forward interest-rate models of the term structure provide a better fit to market prices of options. In particular, we compare the Hull and White (1994), Pelsser (1996) and...

In this article we provide a valuation formula for a quanto swaption, the interest rate equivalent of the well known equity spread option. A quanto swaption gives the owner of the option the right to enter into a quanto swap in which he has to make payments in the domestic currency determined by...

Using daily caps and floors market prices throughout the years 1993 and 1994, we address the open question whether spot or forward interest-rate models of the term structure provide a better fit to market prices of options. In particular, we compare the Hull and White (1994), Pelsser (1996) and...

We compare single factor Markov-functional and multi factor market models for hedging performance of Bermudan swaptions. We show that hedging performance of both models is comparable, thereby supporting the claim that Bermudan swaptions can be adequately riskmanaged with single factor models....

Models can be wrong and recognising their limitations is important in financial and economic decision making under uncertainty. Robust strategies, which are least sensitive to perturbations of the underlying model, take uncertainty into account. Finding the explicit set of alternative models...

Models can be wrong and recognising their limitations is important in financial and economic decision making under uncertainty. Robust strategies, which are least sensitive to perturbations of the underlying model, take uncertainty into account. Finding the explicit set of alternative models...