ISSN : 1226-0657
We prove the existence of the risk-efficient options proposed by Xu [7]. The proof is given by both indirect and direct ways. Schied [6] showed the existence of the optimal solution of equation (2.1). The one is to use the Schied's result. The other one is to find the sequences converging to the risk-efficient option.
F. Delbaen & W. Schachermayer. (1994). A general version of the fundamental theorem of asset pricing. Mathematische Annalen, 300, 463-520. 10.1007/BF01450498.
P. Artzner, F. Delbaen, J.-M. Eber & D. Heath. (1999). Coherent measures of risk. Mathematical Finance, 9, 203-223. 10.1111/1467-9965.00068.
F. Biagini & M. Fritteli. (1999). Utility maximization in incomplete markets for unbounded processes. Finance and Stochastics, 9, 493-517.
F. Delbaen. Coherent risk measures on general probability spaces, Advances in finance and stochastics: Essays in honor of Dieter Sondermann.
H. Follmer & A. Schied. Stochastic Finance:An Introduction in Discrete Time.
A. Schied. (2004). On the Neyman-Pearson problem for law-invariant risk measures and robust utility functionals. Annals of Applied Probability, 14, 1398-1423. 10.1214/105051604000000341.
Mingxin Xu. (2006). Risk measure pricing and hedging in incomplete markets. Annals of Finance, 2, 51-71. 10.1007/s10436-005-0023-x.