The yen touched its highest level in 4 months versus the greenback post BOJ surprised the markets with shifts in the yield curve control policy and broadening the range of the government bond yield.

The greenback retreated by 3.5% at 132.35 yen, touching a low level at 132 yen, the lowest since last August.

The markets did not predict any alterations from BOJ's side until the termination of the 10-year period of the governor Haruhiko Kuroda.

A climb in the 10-year Japanese governmental bonds yield to 0.46% from the earlier limit at 0.25%, which also spiked the U.S, treasury yield.

The Japanese yen achieved earnings on a wide scale, where euro slumped by 3.3% touching bottom since the end of last September at 140.17 yen and the pound dipped by 3.4% hitting the lowest level since last October at 160.34 yen.

Markets currently believe that the bobmshell that BOJ threw today will pave the way towards more aggressive policy.