Looking today at week-over-week shares outstanding changes among the universe of ETFs covered at ETF Channel, one standout is the SPDR S&P Retail ETF (AMEX: XRT) where we have detected an approximate $15.4 million dollar outflow ? that?s a 1.8% decrease week over week (from 13,700,113 to 13,450,113). Among the largest underlying components of XRT, ...