| | AMCA: Utility maximization for unbounded processes by Biagini Sara (Site not responding. Last check: 2007-11-06) |
 | | When the price processes of the financial assets are described by possibly unbounded semimartingales, the classical concept of admissible trading strategies may lead to a trivial utility maximization problem, since the set of bounded from below stochastic integrals may be reduced to the zero process. |
 | | We translate this attitude into mathematical terms by employing a class HW of W-admissible trading strategies which depends on a loss random variable W. These strategies enjoy good mathematical properties and the losses they could give rise to in the trading are compatible with the preferences of the agent. |
 | | By duality methods we show that the optimal solution exists in K and it can be represented as a stochastic integral that is a uniformly integrable martingale under the minimax measure. |
| at.yorku.ca /c/a/o/o/27.htm (289 words) |