FILE PHOTO: A man walks past the Swiss National Bank (SNB) building in Zurich October 31, 2013. The SNB reported a nine-month loss of 6.4 billion Swiss francs, due to a valuation loss on its gold holdings. REUTERS/Arnd Wiegmann
FILE PHOTO: A man walks past the Swiss National Bank (SNB) building in Zurich October 31, 2013. The SNB reported a nine-month loss of 6.4 billion Swiss francs, due to a valuation loss on its gold holdings. REUTERS/Arnd Wiegmann