FOREX-Yen clings to intervention gains as traders stay alert to more

The ?yen held on to most of its intervention-driven gains on Tuesday, ?after ?last week’s joint action by Tokyo and Washington to shore up the currency kept speculators wary of rebuilding bearish positions. The yen weakened in Asia trade and was down 0.2% at 157.55 per dollar, having hit a three-month high of 155.20 in the previous session, though it remained well above its ?40-year low of 163.99touched in July. The Japanese currency had surged as much as 5% over the last three trading sessions, with Japan confirming coordinated yen-buying intervention on Friday with the United States in a rare…