Consider a contract over trade in continuous time between two players, according to which one player makes a payment to the other in exchange for an exogenous service. At each point in time, either player may unilaterally require an adjustment to the contract payment, involving adjustment costs...

This paper addresses the problem of utility maximization under uncertain parameters. In contrast with the classical approach, where the parameters of the model evolve freely within a given range, we constrain them via a penalty function. We show that this robust optimization process can be...