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Optimal Portfolio Rules in Continuous Time When the Nonnegativity Constraint on Consumption is Binding
Optimal Portfolio Rules Continuous Time Consumption Binding
2015/5/13
Optimal Portfolio Rules in Continuous Time When the Nonnegativity Constraint on Consumption is Binding.
On free lunches in random walk markets with short-sale constraints and small transaction costs, and weak convergence to Gaussian continuous-time processes
Stock price model random walk Gaussian processes weak con-vergence
2012/9/14
This paper considers a sequence of discrete-time random walk markets with a safe and a single risky investment opportunity, and gives conditions for the existence of arbitrages or free lunches with va...
Existence of Financial Equilibria in Continuous Time with Potentially Complete Markets
Potentially complete market Continuous-time financial market Radner equilibrium It坥 diffusion
2012/9/14
We prove that in smooth Markovian continuous杢ime economies with potentially complete asset markets, Radner equilibria with endoge-nously complete markets exist.
Time-Consistent Mean-Variance Portfolio Selection in Discrete and Continuous Time
mean-variance criterion Markowitz problem portfolio optimisation time consistency time-inconsistent optimal control
2012/6/5
It is well known that mean-variance portfolio selection is a time-inconsistent optimal control problem in the sense that it does not satisfy Bellman's optimality principle and therefore the usual dyna...
Cone-Constrained Continuous-Time Markowitz Problems
Markowitz problem cone constraints portfolio selection mean-variancehedging stochastic control semimartingales BSDEs martingale optimality principle opportunity process E-martingales linear-quadratic control
2012/9/14
The Markowitz problem consists of finding in a financial market a self-financing trading strategy whose final wealth has maximal mean and minimal variance. We
study this in continuous time in a gener...
Comparing the reliability of a discrete-time and a continuous-time Markov chain model in
discrete-time transition matrix the default probability the empirical results
2011/8/30
This article compares the reliability of a discrete-time and a continuous-time Markov chain model for estimating credit risk and for investigating loans of Chiao Tung Bank in Taiwan. The continuous-ti...
Characteristic Function-Based Testing for Multifactor Continuous-Time Markov Models via Nonparametric Regression
Characteristic Function Markov models conditional distribution
2011/4/2
We develop a nonparametric regression-based goodness-of-fit test for multifactor continuous-time Markov models using the conditional characteristic function, which often has a convenient closed form o...
Characteristic Function-Based Testing for Multifactor Continuous-Time Markov Models via Nonparametric Regression
nonparametric regression economics and finance easy-to-interpret diagnostic procedures
2011/4/1
We develop a nonparametric regression-based goodness-of-fit test for multifactor continuous-time Markov models using the conditional characteristic function, which often has a convenient closed form o...
Ambiguous Volatility, Possibility and Utility in Continuous Time
ambiguity uncertain volatility option pricing recursive utility stochastic differential utility G-expectation G-Brownian motion nonequivalent measures uncertain possibility quasisure analysis
2011/3/30
We formulate a model of utility for a continuous time framework that captures the decision-maker's concern with ambiguity or model uncertainty. The main novelty is in the range of model uncertainty th...
Power Utility Maximization in Discrete-Time and Continuous-Time Exponential Levy Models
utility maximization power utility exponential L´ evy process discretization
2011/3/31
Consider power utility maximization of terminal wealth in a 1-dimensional continuous-time exponential Levy model with finite time horizon.
Continuous-time trading and the emergence of probability
Continuous-time trading emergence of probability
2010/11/1
This paper establishes a non-stochastic analogue of the celebrated result by Dubins and Schwarz about reduction of continuous martingales to Brownian motion via time change. We consider an idealized ...
Exit times in non-Markovian drifting continuous-time random walk processes
non-Markovian drifting continuous-time random walk processes
2010/10/18
By appealing to renewal theory we determine the equations that the mean exit time of a continuous-time random walk with drift satisfies both when the present coincides with a jump instant or when it d...
Continuous time Ehrenfest process in term structure modelling
ehrenfest model interest rate derivatives shortrate
2010/10/19
In this paper, a finite-state mean-reverting model for the short-rate, based on the continuous time Ehrenfest process, will be examined. Two explicit pricing formulae for zero-coupon bonds will be de...
Continuous time Ehrenfest process in term structure modelling
ehrenfest model interest rate derivatives short-rate term structure vasicek model zero-couponbond
2010/4/27
In this paper, a finite-state mean-reverting model for the short-rate, based on the continuous time Ehrenfest process, will be examined. Two explicit pricing formulae for zero-coupon bonds will be der...
Risk Aversion and Portfolio Selection in a Continuous-Time Model
Risk Aversion Portfolio Selection Continuous-Time Model
2010/12/17
The comparative statics of the optimal portfolios across individuals is carried out for a continuous-time complete market model, where the risky assets price process follows a joint geometric Brownia...