So, currencies aren’t supposed to do this. This is the USD/JPY, or dollar/yen pair. Showing the yen strengthening by a gargantuan amount against the greenback. Currency markets are giant markets, where a 1% move is a big deal. With the yen at about 77.41, the dollar is down more than 4.5% today against the Japanese currency. Listen quietly and you can hear the screaming from hedge fund trading desks.