Some central banks have cut interest rates into negative territory to eke out economic growth, but unintended, counterproductive outcomes may emerge.
The dollar index ended stayed on track for a record eighth month of gains on improving data and comments from Fed officials.
The dollar rose to a one-month high as data on U.S. inflation and business orders and Fed officials' remarks.
Former Goldman Sachs Asset Management Chairman Jim O'Neill shares his thoughts on currencies and shorting the Swiss franc. Also O'Neill weighs in on why he thinks the U.S. structural story is not so powerful.
The dollar edged down after Fed Chair Janet Yellen held back from giving a clear view on when the Fed may begin raising interest rates.
The dollar edged down against the yen Janet Yellen suggested the Fed won't be rushed into kicking off the U.S. interest rate tightening cycle.
The Swiss franc shed over 1 percent against the dollar, dropping towards five-week lows as some of the Greece-related safety flows waned.
The euro jumped against the dollar in midday trading on reports that a deal had been reached between Greece and the European Central Bank.
The dollar recovered on talk the Swiss National Bank was buying the greenback.
Paul Bulcke, CEO of Nestle, talks the current volatility in the Swiss franc and the measures the company is taking to offset that.
The euro recovered from initial losses, helped by a bounce in German investor sentiment.
The euro inched higher ahead of a meeting of euro zone finance ministers that investors expect will find enough common ground to support Greece.
The euro edged higher on Friday, putting it on course for a third straight week of gains, its best performance in just under a year.
The dollar dropped across the board on Thursday after weaker-than-expected U.S. economic data.
The yen surged against the U.S. dollar following a report that the country's central bank is cooling on the idea of adding more stimulus.
CNBC talks to the CEOs of Credit Suisse and Zurich Insurance, and Switzerland's Economy Minister about the Swiss National Bank's decision to drop its currency peg last month.
Johann Schneider-Ammann, Economy Minister of Switzerland, says the surge in the Swiss franc is a huge challenge for businesses, but declined to comment what the ideal exchange rate should be.
The dollar hit a fresh one-month high versus the yen on Wednesday, while uncertainty over a new debt deal for Greece kept the euro under a cloud.
The dollar strengthened on the back of U.S. Treasury yields, while the euro was buffeted by comments and media reports on the progress of Greece.
The dollar gave back some ground on Monday as traders sold into a rally triggered by robust U.S. jobs data.