日圓居高不下的原因??

根據已往數據當美股做好時,日圓都會下跌:
Yes, it was because 日圓 was the funding currency for carry trade i.e. borrowed low interest cost 日圓 then used the funds to buy stocks or high yield currencies such as AUD, NZD or EUR.
but now, market investors think that USD is the most suitable funding currency. It bears low interest and also depreciates. Much much better than 日圓. Therefore, USD depreciates, but JPY rises.