Looking at units outstanding versus one week prior within the universe of ETFs covered at ETF Channel, the biggest outflow was seen in the iShares US Real Estate ETF (IYR), where 4,250,000 units were destroyed, or a 7.6% decrease week over week. Among the largest underlying components of IYR, in morning trading today American Tower Corporation REIT (AMT) is up about 0.2%, and Crown Castle International Corp REIT (CCI) is lower by about 0.5%.