According to Credit Suisse, this is just the beginning of Transpacific central banking warfare. Per Dow Jones: "The Japanese Ministry of Finance's JPY-selling operation Thursday may be the first in a series of interventions over the coming weeks to curb further rises in the unit, and may have come Thursday in part as the Swiss National Bank's move Wednesday to weaken its own currency made it easier for Japan also to step in, says Koji Fukaya, director of fixed income and global foreign exchange research at Credit Suisse. "This may be the start of a number of actions, depending on the yen moves in the weeks ahead," Fukaya says. The SNB's move Wednesday means Japan's own move "could be considered as a kind of coordinated action" in response to broad USD weakness, he says. As traders say the MOF has so far sold under Y500 billion, Fukaya says the total size ahead could rise as high as Y2 trillion, though the move Thursday should be enough to send USD/JPY above 79.00 later, where it should stabilize in coming sessions. The pair is now at 78.32, from 77.10 earlier." To anyone trading in these 100% correlated markets, which are now nothing but a battleground for those who yield the global electronic fiat printing presses, good luck.
One thing is certain: this latest attempt by the feeble BOJ to take on the Chairsatan is doomed to failure, as confirmed by the Bloomberg chart showing the "effect" of the last two such interventions: