* Dollar, yen sold this week as stimulus hopes boost mood * Yuan leaps as China returns; strong fix, Biden prospects boost * 10% gain in oil prices this week lifts oil exporters' currencies * Graphic: World FX rates in 2020 tmsnrt.rs/2RBWI5E By Tom Westbrook SINGAPORE, Oct 9 (Reuters) - The dollar drifted toward a small weekly loss on Friday, while the Chinese yuan soared to a 17-month high, as investors wagered on a Joe Biden presidency and on more U.S. stimulus spending. The yuan's leap, when China's markets reopened after the Mid-Autumn break, was partly a catch-up since the offshore yuan has gained against a softening dollar during the week. But as it extended gains beyond 1%, heading for its sharpest daily gain in more than four years, traders said it provided one of the clearest indications yet that Biden's lead in the polls is driving bets on a steadier Sino-U.S. relationship. A stronger-than-expected setting of the yuan's trading band also signalled that policymakers in China don't mind its rise. The yuan was last up 1.2% at 6.7112 per dollar in onshore trade and it rallied half a percent to 6.7024 per dollar offshore. The dollar eased 0.1% against a basket of currencies and it is down 0.4% for the week. "I think the main message is that the (People's Bank of China) is allowing further renminbi appreciation at this level," said Ken Cheung, chief Asian FX strategist at Mizuho Bank in Hong Kong. "So markets are positioning for a renminbi rally." The prospect of a Biden administration less inclined toward tariffs and trade disputes was another boost, he added. "Polls are showing that Biden is taking the lead... it means the risks of resuming a new trade war are getting smaller, so I think this is positive for the renminbi." Reuters/IPSOS polling this week put Biden, a Democrat, narrowly ahead of Republican President Donald Trump in five states - Wisconsin, Pennsylvania, Michigan, Florida and Arizona - that will play critical roles in deciding the victor. STIMULUS HOPES A growing expectation that, whoever wins, U.S. stimulus spending will flow has also been weakening the dollar in the short term, by improving investors' mood and their willingness to buy riskier assets such as stocks and commodity currencies. Talks have resumed between House Speaker Nancy Pelosi and Treasury Secretary Steven Mnuchin over coronavirus aid plans, two days after President Donald Trump ended them, and investors reckon a Democratic administration would be eager to spend. "The uncertainty is more around whether it will happen before the election and how big it will be," said Rodrigo Catril, senior FX strategist at National Australia Bank in Sydney. "Investor confidence is growing that Biden will win the presidential election by a clear margin, reducing the risk that Trump disputes the result." The risk-sensitive Australian dollar rose 0.2% on Friday to $0.7179, putting put it a fraction higher for the week, despite analysts interpreting a Tuesday central bank statement as a signal of monetary easing to come. The New Zealand dollar likewise recouped Thursday losses made after another dovish signal from the Reserve Bank of New Zealand and was last up 0.4% at $0.6603. The safe-haven Japanese yen, which has been sold with the upbeat mood, was a tiny bit higher at 105.85 per dollar on Friday. It is down about 0.5% this week. The euro was up 0.1% to $1.1776 and sterling crept 0.2% higher to $1.2952 and has held firm this week as prospects for a Brexit deal have appeared to improve. Elsewhere, a 10% surge in oil prices this week, on optimism about stimulus and supply disruptions owing to a storm in the Gulf of Mexico and strike in Norway, has boosted oil-linked currencies. The Canadian dollar is set for its best weekly rise in more than two months, adding 0.9% to C$1.3186 per dollar. The Russian rouble has also gained about 1% for the week. ======================================================== Currency bid prices at 1:16PM (516 GMT) Description RIC Last U.S. Close Pct Change YTD Pct High Bid Low Bid Previous Change Session Euro/Dollar $1.1776 $1.1761 +0.13% +5.04% +1.1781 +1.1758 Dollar/Yen 105.8500 106.0300 -0.19% -2.57% +106.0350 +105.8250 Euro/Yen 124.66 124.69 -0.02% +2.22% +124.7600 +124.5300 Dollar/Swiss 0.9154 0.9170 -0.15% -5.38% +0.9172 +0.9154 Sterling/Dollar 1.2950 1.2933 +0.19% -2.30% +1.2958 +1.2930 Dollar/Canadian 1.3184 1.3197 -0.09% +1.49% +1.3198 +1.3180 Aussie/Dollar 0.7180 0.7168 +0.18% +2.34% +0.7187 +0.7168 NZ 0.6605 0.6582 +0.35% -1.84% +0.6611 +0.6584 Dollar/Dollar All spots Tokyo spots Europe spots Volatilities Tokyo Forex market info from BOJ (Reporting by Tom Westbrook; Editing by Richard Pullin and Gerry Doyle)
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