Yen Surges to Seven-Month High as Traders Rethink Outlook

The yen has surged to a seven-month high against the dollar, reaching its lowest level since February. The Japanese currency broke past the key 155 level, which had previously been seen as a bottom for the dollar-yen pair. This move is attributed to several factors, including bets on faster Bank of Japan tightening and expectations that Japanese investors may shift funds back home.

Lee Hardman, senior currency analyst at MUFG, said the break past 155 was a bullish signal, potentially leading to further upside for the yen. Recent moves have been dramatic, with the dollar trading above 160 yen as recently as last Tuesday.

The dollar's fall against the yen has also had a broader impact on the currency market, with the euro and pound gaining ground. The main event of the week is Friday's US inflation data, which will help shape the Federal Reserve's view on an interest-rate hike later in the month.