Sterling hit a 2016 high and the euro surged against the dollar and yen after a series of late opinion polls favored Britain staying.
The dollar was broadly weaker on Wednesday as risk appetite returned to markets.
Sterling and the euro rose on the last day before Britain's referendum on EU membership, the pound trading just off its highest this year.
The dollar tumbled on as sterling surged more than 2 percent and the euro jumped after opinion polls swung in favor of remain.
Sterling rose as traders evaluated whether the killing of MP Jo Cox may alter the balance of opinion on Brexit.
Sterling rallied from a two-month low against the euro, extending gains after British police said British lawmaker Jo Cox died.
BCS Global Markets CEO & chairman, Roman Lokhov talks about how the lifting of sanctions on Russia would benefit his business and the country.
Is the worst over for the Russian economy? Kirill Androsov, managing director at Altera Investment Fund, explains why he believes so.
Central Bank of Russia Governor, Elvira Nabiullina, says the bank has had discussions on how to deal with the aftermath of a possible Brexit.
The dollar added to earlier losses on Wednesday after the Federal Reserve left interest rates unchanged, as was widely expected.
The yen surged to its strongest level against the euro in more than three years on Tuesday as the chances of UK voting next week to leave the EU grew.
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.
The Russian central bank has cut its key interest rate by 50 basis points to 10.5 percent. CNBC’s Julia Chatterley reports the key details, while looking at market reaction.
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.