BY DAVID JOHN MAROTTA Here are the statistics of the SPDR sector ETFs from 2011-12-30 through last Friday, 2012-07-06: There are two sectors we generally overweight, Technology and to a lesser extent, healthcare. We often use Vanguard Information Technology ETF (VGT) and Vanguard Health Care Inv (VGHCX). Technology has been the best performing sector so far this year. Energy has [...]