I did write "you should check the small print for any one you choose to be sure what the guarantee is"

In the ZKB web site it states
"Cantonal guarantee
Under the law, the canton bears responsibility for all Zürcher Kantonalbank's liabilities should the bank's resources prove inadequate. This cantonal guarantee acts as a stabilising force for the financial market as a whole, particularly in times of economic uncertainty. "

What do you think this Cantonal Guarantee means?

Marton