Tom McClellan (May 07, 2015): I do not know why it works to have the EuroDollars COT data shifted forward by a year to see what the SP500 will do. But after seeing that it has worked for several years, at some point we stop wondering about the “why” question, and start to accept that there really is something working here.
I should emphasize that the relationship broke down during the Fed’s QE3, the $85 billion per month program of expanding the Fed’s balance sheet which started in September 2012 and then tapered down to nothing by October 2014. During 2013 the once-nice leading indication seemed to be inverted for a while, and then the two plots got back into sync again starting in late 2013. That was a frustrating time since I had come to trust its message so much when it was working well in 2011 and 2012. That just proves the point that no indicator is infallible, and one must continue to pay close attention to what is going on, just to make sure that everything is working as it is supposed to.
With the relationship back in sync now, it is appropriate to look ahead to a top due this summer, and some ugliness for stock prices this fall. Ideally the top is due in early August, but there can be slight differences in the texture of the ED COT pattern and the actual behavior of the SP500. More HERE & HERE