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We study dynamic monetary risk measures thatdepend on bounded discrete-time processesdescribing the evolution of financial values. The time horizoncan be finite or infinite. We call a dynamic risk measuretime-consistent if it assigns to a process of financialvalues the same risk irrespective of...
Persistent link: https://www.econbiz.de/10009461515
Persistent link: https://www.econbiz.de/10005477845
We study the existence of solutions to backward stochastic differential equations with drivers f(t,W,y,z) that are convex in z. We assume f to be Lipschitz in y and W but do not make growth assumptions with respect to z. We first show the existence of a unique solution (Y,Z) with bounded Z if...
Persistent link: https://www.econbiz.de/10010875074
We study the problem of optimally liquidating a financial position in a discrete-time model with stochastic volatility and liquidity. We consider the three cases where the objective is to minimize the expectation, an expected exponential or a mean-variance criterion of the implementation cost....
Persistent link: https://www.econbiz.de/10010973367
We provide a characterization of the Gaussian processes with stationary increments that can be represented as a moving average with respect to a two-sided Brownian motion. For such a process we give a necessary and sufficient condition to be a semimartingale with respect to the filtration...
Persistent link: https://www.econbiz.de/10008875383
In spite of their importance, third or higher moments of portfolio returns are often neglected in portfolio construction problems due to the computational difficulties associated with them. In this paper, we propose a new robust mean–variance approach that can control portfolio skewness and...
Persistent link: https://www.econbiz.de/10010743694
We study time-consistency questions for processes of monetary risk measures that depend on bounded discrete-time processes describing the evolution of financial values. The time horizon can be finite or infinite. We call a process of monetary risk measures time-consistent if it assigns to a...
Persistent link: https://www.econbiz.de/10005084152
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Assume that the random future evolution of values is modelled in continuous time. Then, a risk measure can be viewed as a functional on a space of continuous-time stochastic processes. In this paper we study coherent and convex monetary risk measures on the space of all càdlàg processes that...
Persistent link: https://www.econbiz.de/10005759616
Dai and Singleton (2000) study a class of term structure models for interest rates that specify the instantaneous interest rate as an affine combination of the components of an N-dimensional affine diffusion process. Observable quantities of such models are invariant under regular affine...
Persistent link: https://www.econbiz.de/10005237224