Hi Royce,
I am doing both. I only trade some of the Pairstrading.com's pairs that make sence to me such as MXIM/LLTC, GM/DCX, TGT/WMT, SBC/BLS, XLNX/ALTR, FO/ITT, AGN/MRK.
I am also testing 2 year correlation with ratio at 2SD from the mean or greater where the graph crosses 10DEMA in the...