Investors use the weak value of the consumer price index (CPI) for the partial closure of the U.S. short positions in the Japanese yen, which made the dollar into negative territory against the Japanese currency.

The market opened an excessive amount of long positions in the pair dollar / yen in Japan before the election, scheduled for Sunday. Expected to come to power a political party, intentional conduct active easing of monetary policy, so there is a partial closing of short positions on the yen.