TOKYO -- The yen's sharp appreciation Monday after crossing the 160 mark against the dollar has triggered speculation that Japanese authorities intervened in the market to shore up their home currency.
Currencies
Yen's surge raises questions over intervention: 3 things to know
Japanese currency rebounds by around 5 to dollar after touching new 34-year low
Currency authorities can either buy their home currency to strengthen it, or sell their home currency to weaken it. (Source photos by Nikkei)
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