Yen's sudden jump puts traders on alert for further intervention

SINGAPORE, Aug. 3 (Reuters) - The yen surged against the dollar on Monday, putting traders on alert for further intervention by Japanese authorities to shore up the currency, after Tokyo confirmed coordinated yen-buying intervention with the United States last week. The yen JPY= surged more than 1% against the dollar to an intraday high of 155.20, its strongest since early May. It has traded near 40-year lows against the dollar JPY=, pressured by Japan's relatively low interest rates and as higher energy prices hit its terms of trade. Japan's finance ministry could not immediately be reached for comment. **Nick Twidale, chief market strategist, ATFX Global in Sydney:** > "They are clearly determined to make a solid effort in strengthening the yen as the billions of dollars they have spent and joint moves have proved. > > "However, there will need to be a change in the underlying fundamentals for these moves to be sustainable. The market will challenge these moves once they feel the action has been completed. > > "And ultimately we will see much more volatility in the short term because of the Japanese authorities' actions, which of course is in complete contradiction of what they are claiming to do." **Takashi Ishida, strategist, Kansai Mirai Bank in Osaka:** > "Japan's authority broke the silence and has shown its aggressiveness to stem the yen's weakness. It must be serious about supporting the yen. > > "The yen's momentum will last as long as September or October if the Bank of Japan is to raise interest rates. It looks like the intervention is done with pairs with the BOJ's rate hikes." **Sim Moh Siong, strategist, OCBC in Singapore:** > "It looks like it (an intervention) ... it looks like the signal is they will do whatever it takes to stabilise the yen ... the position squeeze will kick in once you get below 155, and it looks like it could be the direction that we are heading to trigger more stop-losses and then a further dip in dollar/yen before things start to consolidate." **Hirofumi Suzuki, chief FX strategist, SMBC in Tokyo:** > "It is impossible to know for certain whether intervention actually took place. However, given the magnitude of the move in USD/JPY and its timing, the possibility of intervention cannot be ruled out. > > "A substantial build-up of short yen positions had occurred, and the unwinding of these positions tends to accelerate yen appreciation. Market participants are also highly alert to the risk of such a move. > > "We expect the yen to remain susceptible to further appreciation in the very near term."

Yen's sudden jump puts traders on alert for further intervention

Yen jumps as traders watch for intervention

Market participants say further gains could follow

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