Swiss Open New Round in Currency War

Swiss Open New Round in Currency War

Gianluca Colla/Bloomberg

The Swiss National Bank stands in Zurich. The SNB’s unilateral move puts it head-to-head with a $4 trillion-a-day currency market that drove the franc up more than 16 percent against a basket of nine major peers in the year through Sept. 2, according to Bloomberg Correlation-Weighted Currency Indexes.