July 31 : The U.S. Treasury has informed a number of banks that it may intervene in the yen market on Friday and that they should "stand ready for future action," a source familiar with the matter told Reuters.The notice to banks, channeled through the Federal Reserve Bank of New York, comes a day after Japan

July 30 : The dollar sank against the Japanese yen on Thursday with traders alert to the possibility of intervention from Japan to prop up its stubbornly weak currency. The dollar…

NEW YORK, July 30 : The Japanese yen surged on Thursday, in a move analysts said bore the hallmarks of official intervention by Tokyo to prop up a currency that has slumped to…

By Jessica Fleetham and Megumi Fujikawa

Coordinated actions seen as joint effort to curb yen weakness