The problem of hedging a contingent claim with minimization of quadratic risk is studied. Existence of an optimal strategy for the model with proportional transaction cost and nondelayed observation is shown.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-am30-2-5, author = {Micha\l\ Motoczy\'nski}, title = {Risk minimization in the model with transaction costs}, journal = {Applicationes Mathematicae}, volume = {30}, year = {2003}, pages = {209-216}, zbl = {1141.91019}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-am30-2-5} }
Michał Motoczyński. Risk minimization in the model with transaction costs. Applicationes Mathematicae, Tome 30 (2003) pp. 209-216. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-am30-2-5/