I have posted at length about my modified version of Mr Grossman's global ETF rotation system.
At the end of February, the system signaled a shift from SSO to EDV. In case you were curious, the following graphs from the author's Excel spreadsheet show [i] the price performance of the rotated ETFs and [ii] the 3-month price performance of the rotated ETFs since December 31, 2012:
Monthly price performance (%) since December 31, 2012 (horizontal axis = last day of the labeled month):
Log of 3-month price performance since December 31, 2012 (horizontal axis = last day of the labeled month):
You can see that EDV has been falling for over a year and only now seems to be turning upward. SSO and FEZ, on the other hand, may be leveling out.
My gut tells me this signal isn't all that strong, and I am pessimistic about it. But we shall see.
Disclosure: I am long EDV.