* C$ ends at 97.21 U.S. cents
* U.S. dollar strength key driver behind C$ drop
* Bond prices soften across curve (Updates to close, adds quote)
TORONTO, Oct 27 (Reuters) - Canada's dollar retreated against the U.S. currency on Wednesday as the greenback rose broadly on speculation the U.S. Federal Reserve would take a measured approach to quantitative easing.
The U.S. dollar's rise pushed it into positive territory against major currencies for the year as investors continued to unwind bets against the greenback before a highly anticipated Federal Reserve meeting next week. [FRX/]
Doubts over how aggressively the Fed is going to be with another round of asset-buying to stimulate a faltering recovery also weighed on global equities and commodities. [MKTS/GLOB]
"It comes down to the U.S. dollar, and the U.S. dollar strength or weakness is simply a barometer of the market's assumption around quantitative easing at the next Fed meeting," said Jack Spitz, managing director of foreign exchange at National Bank Financial.
"The current market position is to be short U.S. dollars and the U.S. dollar's gains over the past few days have reflected a pulling back of risk," he said.
The Canadian dollarended at C$1.0287 to the U.S. dollar, or 97.21 U.S. cents, down from Tuesday's finish at C$1.0242 to the U.S. dollar, or 97.64 U.S. cents.
The U.S. central bank has aired several times that it will attempt to boost growth by pumping more money into the economy through government bond purchases, commonly referred to as quantitative easing. That has pushed the dollar and U.S. bond yields lower.
But the greenback reversed course this week on uncertainty about how much the Fed will spend and whether the new measures will be carried out swiftly or phased in over time.
The Wall Street Journal reported on Wednesday that the Fed is likely to unveil an asset purchase program next week worth a few hundred billion dollars over several months, and that officials wanted to avoid a "shock and awe" style approach. [ID:nTOE69Q02H]
"As the market scales back its expectations on QE (quantitative easing), it scales back its short dollar positions," said Spitz.
Canadian government bond prices softened, tracking U.S. Treasuries lower as traders trimmed bets on the size of possible asset buying by the Fed. [US/]
"The move is generally in line with what we saw in the U.S.," said Kam Bath, fixed income strategist at RBC Capital markets.
"It's people paring down their expectations of Fed stimulus next week," he added. "That would explain the underperformance at the belly of the curve because that's where expectations for Fed purchases were largely concentrated."
The two-year bondfell 5 Canadian cents to yield 1.451 percent, while the 10-year bond was off 58 Canadian cents to yield 2.884 percent. (Additional reporting by Claire Sibonney; editing by Rob Wilson)
Our Standards: The Thomson Reuters Trust Principles.