The move comes amid much speculation on the way the bank system is to be reformed. The aim of the stock exchange is to protect investors. It's not clear when the trading will resume, but it will definetly not happen before December 13th when the results of the stress tests are to be revealed. Trading has been stopped for the shares and bonds of Abanka Vipa, Banka Celje, Facor Banka, Nova KBM, Nova Ljubljanska Banka and Probanka.