Why is the yen losing value?
There are several factors, but it is mainly a "product of divergent monetary policy between the Bank of Japan and its developed-market peers — particularly the Federal Reserve," said
Barron's. This is the result of a wide difference in interest rates between the U.S. and Japan; the Bank of Japan "has only just begun to ease off intense monetary stimulus, while the Fed and other central banks are years into tightening cycles."