The graph below shows the ratio of upward to downward revisions of equity analysts’ earnings forecasts in different countries. I stole the graph from Walter Kurtz at Sober Look. Walter himself got the data from Merrill Lynch.
Just take a look in the spike in upward earnings revisions (relative to downward revision) for Japanese companies after Haruhiko Kuroda was nominated for new Bank of Japan governor back in February and he later announced his aggressive plan for hitting the newly introduced 2% inflation target.
This is yet another very strong prove that monetary policy can be extremely powerful. The graph also shows the importance of the Chuck Norris effect – monetary policy is to a large extent about expectations or as Scott Sumner would say: Monetary Policy works with long and variable leads - or rather I believe that the leads are not very long and not very variable if the central bank gets the communication right and I believe that the BoJ is getting the communication just right so you are seeing a fairly strong and nearly imitate impact of the announced monetary easing.
PS As there tend to be a quite strong positive correlation between earning growth and nominal GDP growth I think we can safely say that the sharp increase in earnings expectations in Japan to a large extent reflects a marked upward shift in NGDP growth expectations.