The U.S. dollar rose more than 1 percent to a session peak against the Swiss franc amid volatile markets ahead of the official release of European bank stress tests.

The dollar was last up 1 percent against the Swiss franc at 1.0535 francs CHF= after going as high as 1.0548 francs. The euro was last up 0.5 percent against the Swiss franc at 1.3511 Swiss francs EURCHF=. (Reporting by Nick Olivari; Editing by Theodore d'Afflisio)