The yen jumped against the dollar and euro on Wednesday after a Chinese newspaper report said China would widen its currency band next week but later trimmed gains after the Chinese central bank said there was no change in policy. The People's Daily report said Beijing will widen its rigid yuan currency band by 1.26 percent in a month and 6.03 percent in a year but a spokesman for China's central bank said there was no change to currency policy and believed the report was wrong. A People's Daily official said the unsourced report on the yuan was a translation of a May 7 China News Service article quoting a Hong Kong business official. The yuan, or renminbi, is pegged in a narrow band at around 8.28 per dollar. As the dollar has broadly weakened over the last three and a half years, the falling yuan has made Chinese exports cheaper in global markets. "The People's Daily report is certainly more credible than most that we've had recently, but I'm still not convinced they are going to do it," said Adrian Foster, head of currency strategy at Dresdner Kleinwort Wasserstein.