An undated photographic illustration of Japanese yen and the U.S. dollar bank notes. The yen touched 160.03 against the greenback on Monday, for the first time since 1990, but strengthened to 156 levels later that day amid speculation about an intervention by Japanese authorities. Japanese authorities are yet to issue an official statement confirming their role in propping up the currency. In the last few decades, while other global central banks have tightened their policies, Japan had maintained its ultra-loose policy, leading to concentrated carry trades in the Japanese yen. Market participants believe Japanese authorities will intervene further to prop up the currency.

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Persons: Glowimages, they've, Nicholas Smith, Kazuo Ueda, Edward Yardeni Organizations: U.S, Glowimages, CNBC, Bank of America Global Research, Bank of Japan, Bank of, Federal Reserve, Yardeni Research Locations: propping, Japan, U.S, Bank of Japan