The yen heads for its biggest weekly gain in more than a month against the dollar, on tensions in Ukraine and the Chinese economy.» Read More
U.S. Treasury debt prices were trading little changed as a U.S. Republican proposal for a limited rise in the debt ceiling curbed demand for safe-haven assets.
The yen briefly fell against the dollar on Tuesday after the Bank of Japan surprised markets by adopting an open-ended commitment to buy assets, but later regained ground as the new scheme for additional purchases only comes into effect next year.
The yen hit a 2-1/2 year low against the dollar on Friday as markets positioned for the Bank of Japan to take bold action to tackle deflation at a policy-setting meeting early next week.
Hamish Pepper, Forex Strategist, Asia Pacific at Barclays shares his outlook for Asian currencies, including the yen.
A recent warning from a Japanese minister about excessive yen weakness continued to underpin the currency.
The yen on Tuesday posted its best one-day gain against the euro in seven months and rose against the dollar after falling four straight days.
The euro rose against the dollar for a third straight session Monday, touching an 11-month high, as investors continued to trade off of diminished expectations of ECB monetary easing.
Singapore on Friday increased a tax on foreign buyers as part of new measures to cool its housing market which has seen continued strong demand in the face of a weak economy and previous efforts to curb prices.
The euro rose to its highest level since April 2012 against the dollar Friday with investors continuing to trade on the absence of any hints as to future euro zone interest rate cuts.
The euro catapulted to an 18-month high versus the yen and hit a one-week peak against the dollar Thursday after the European Central Bank gave no indication of cutting rates.
In the past few years, central banks around the world have pumped trillions of dollars into the financial system, partly motivated by the desire to keep their currencies weak in relation to others.
The yen plummeted against the U.S. dollar Wednesday, revisiting a trend that recently took the currency to a 2-1/2-year low on expectations of easier Bank of Japan policy.
The dollar and euro plunged against the yen as investors booked profits in the aftermath of swift and significant gains.
The euro gained for a second straight session against the dollar on Monday, benefiting from technical factors as well as expectations that the European Central Bank will refrain from cutting interest rates.
The dollar climbed to a nearly 2 1/2-year peak against the yen Friday after minutes from the Fed's meeting the previous day showed growing concern about further stimulus for the economy.
The dollar climbed to a three-week high against a basket of currencies as concerns about budget wrangling in Washington drove investors to the U.S. currency.
The dollar suffered against higher-yielding currencies after U.S. lawmakers approved a last-minute deal to avert huge tax rises and spending cuts, spurring demand for riskier investments.
The U.S. dollar edged up to a two-week high against major currencies Friday as investors waited to see if U.S. politicians can strike a last-minute budget deal.
As central banks in both the U.S. and Japan look set to continue aggressive monetary easing policies in 2013, Dan Harden, senior commercial dealer at Global Reach Partners has told CNBC traders should short both countries' currencies and look for high yields from the Australian and New Zealand dollar.
The yen fell to its lowest against the dollar in more than two years on Thursday, on expectations Tokyo will push for aggressive monetary stimulus.