FXstreet.com (Barcelona) - US Dollar, Japanese Yen End Day Lower as Bernanke Optimism, Citigroup Report Boost Risk Appetite. Risk appetite was strong for much of the day, pushing the S&P 500 up 6.37 percent by the end of the day and weighing on the US dollar and Japanese yen on word that Citigroup was having its best quarter since posting a profit in 2007 and amidst reassuring comments by Federal Reserve Chairman Ben Bernanke.

Meanwhile, wholesale inventories fell for the fifth straight month in January at a rate of 0.7 percent, as businesses try to keep up with declining demand, said Terri Belkas, an analyst at FXCM.

Indeed, wholesale sales have been consistently falling negative since July 2008, which has led the inventory/sales ratio to climb from 1.06 in June 2008 to 1.30 in January 2009, suggesting that business are burdened with additional costs as they carry excess supplies.