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The dollar fell to a fresh one-month low against the euro on Thursday in thin trading, as investors tested key resistance levels in the euro zone currency.
The dollar rallied across the board on Wednesday, bolstered by a rise in U.S. Treasury yields that suggested the recovery in the world's largest economy was firmly on track.
The dollar was broadly weaker on Tuesday, falling to a one-month low against the euro in thin trading.
The yen rose against the dollar for the first time in four sessions on Monday after Japanese Prime Minister Shinzo Abe won a widely expected victory in elections for parliament's upper house.
The dollar fell against the yen in late trade on Friday as investors adjusted positions before Japan's upper house elections on Sunday.
The yen fell across the board on Thursday as traders bet Japan's upper house elections would strengthen Prime Minister Shinzo Abe's position.
The dollar rose broadly on Wednesday after Federal Reserve Chairman Ben Bernanke confirmed market expectations that the U.S. central bank will start reducing its monetary stimulus.
The dollar stayed on the defensive on Wednesday ahead of Federal Reserve Ben Bernanke's semi-annual testimony in Congress later in the day.
The dollar eased versus a basket of currencies Tuesday, supported by the view that the Fed is likely to be the first to move away from ultra-loose monetary policy.
The dollar rose on Monday amid anticipation of improved U.S. sales data which could hasten moves by the country's central bank to wind down its stimulus programme.
The U.S. dollar fell to multi-week lows as traders scaled back expectations that the Federal Reserve will slow its asset purchases in the coming months.
The dollar tumbled against the euro and yen on Wednesday after the minutes from the Fed's policy meeting dented expectations of a near-term reduction in stimulus.
The U.S. dollar edged off three-year highs against major currencies on Monday but looked poised to resume gains after last week's strong U.S. jobs data.
The dollar touched a five-week high against the yen and a six-week peak against the euro on Friday on good U.S. jobs data.
The yen rose across the board on Wednesday as political instability in Egypt and Portugal prompted investors to seek refuge in the Japanese currency.
The dollar breached 100 yen again to hit a four-week high on Tuesday amid growing optimism that U.S. jobs data will prompt the Federal Reserve to scale back stimulus.
The dollar fell against most currencies, while the yen dropped to its lowest in nearly four weeks versus the greenback on Monday.
The sell-off in commodity currencies over the past two weeks has hit the Norwegian krone particularly hard, but according to one strategist the decline is "overdone" and the krone is set for a rebound.
The dollar advanced against the yen and the euro on Friday as investors resumed pricing in the possibility that the Federal Reserve will begin to pare back its bond-buying program as soon as its September policy meeting.
The dollar slid against the euro on Thursday, after two days of gains as Federal Reserve officials downplayed expectations the U.S. central bank would start scaling back its stimulus program and said the Fed could buy bonds again if the economy weakens.