The dollar ended 2015 with a more than 9 percent annual gain against a basket of currencies on Thursday.
The U.S. dollar rallied against commodity currencies such as the Norwegian crown and Russian ruble on Wednesday.
The U.S. dollar gained against the euro on Tuesday after greater risk appetite hurt demand for the shared currency.
The U.S. dollar held near a more than one-week low against a basket of major currencies on Monday.
The dollar fell against a basket of currencies on Thursday, putting it on track for its steepest monthly loss since April.
The dollar rose in thinned trading on Wednesday after data painted a mixed picture of the U.S. economy.
The dollar slipped against a basket of currencies on Tuesday as more traders booked profits on bullish greenback bets.
Tom Elliott, international investment strategist at DeVere Group, says if Brazil can get some stability in commodity prices and lose some political risk, it'll start to look cheap for investors.
Traders focused their attention on slumping commodities prices, on the global economy and central bank policies.
Andrew Kenningham, senior global economist at Capital Economics, says Brazil's new finance minister Nelson Barbosa may struggle to get his proposed fiscal reforms past Congress.
The dollar tumbled against the Japanese yen on Friday after the Bank of Japan merely tweaked its monthly asset-purchase program.
The U.S. dollar hovered near a two-week high against a basket of other major currencies a day after the Fed hiked interest rates.
The U.S. dollar lost some ground on Wednesday, after the Federal Reserve decide to raise interest rates for the first time in nearly a decade.
Sumedh Deorukhkar, senior economist for emerging Asia at BBVA, Hong Kong, identifies Brazil, Indonesia and Thailand as the emerging markets that will hurt from a Fed hike this week.
The U.S. dollar rebounded from a roughly six-week low against the euro on Tuesday.
The dollar turned positive, after edging lower on worries that oil prices and credit market turmoil could limit U.S. interest rate hikes.
The dollar fell on Friday against key world currencies amid a selloff sparked by market volatility concerns.
Currencies in Brazil and Russia are among the world’s worst performing this year, and that’s taken a bite out of consumers’ appetite for appliances.
The Swiss franc rose against the euro on Thursday after Switzerland's central bank kept interest rates on hold at record lows.
The dollar fell on Wednesday as commodity currencies reversed steep losses from Tuesday as oil recovered.