The safe-haven yen firmed broadly on Monday, hitting a three-year peak against the euro and sterling and a six-week high versus the dollar.
Sterling fell to a two-month low against the U.S. dollar on Monday as concerns grew about the threat of the U.K. voting to leave the EU in 10 days' time.
The yen and Swiss franc rose as oil prices slid and bank shares led global equity markets lower, stoking a fresh wave of bids for low-risk assets.
A broad decline in commodity and stock prices in major world markets raised the yen on Thursday.
The dollar hit a five-week trough on Wednesday, hurt by waning expectations that the Federal Reserve will raise interest rates anytime soon.
The Australian dollar strengthened on Tuesday after the Reserve Bank of Australia kept interest rates on hold.
The dollar hit a session low against a basket of currencies as Janet Yellen delivered prepared remarks about the U.S. economy.
The dollar fell to the lowest level in three weeks on Friday after the U.S. jobs report came in far below expectations.
The dollar fell to its lowest against the yen in more than two weeks.
The U.S. dollar hit its lowest level in two weeks against the yen after Japan delayed a sales tax hike for longer than expected.
Investors received a reality check this week after a poll on the upcoming referendum highlighted that the vote might just be closer than many were thinking.
The dollar was mostly flat against a basket of major currencies after U.S. data failed to support expectations for a June or July Fed hike.
The dollar reached a one-month high against the yen on Monday, after Fed Chair Janet Yellen fanned expectations the Fed would raise U.S. rates soon.
The dollar index hit 2-month highs on Friday after Federal Reserve Chair Janet Yellen left the door open to a rate increase.
The dollar fell against the euro, yen, and franc after U.S. economic data showed weakness in business spending plans.
The U.S. dollar rose against the yen for a second straight day and hovered near its highest level in roughly 10 weeks against the euro.
The U.S. dollar hit its highest level against the euro in more than eight weeks on Tuesday and rallied against the yen.
The U.S. dollar gained against the euro on Monday after Federal Reserve officials made hawkish remarks on monetary policy.
The U.S. dollar hit its highest level against the yen in more than three weeks on Friday.
The dollar stood tall and set a three-week high against the yen on Thursday, after the minutes of the U.S. Fed's meeting rekindled expectations.