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 Russell Mid-Cap Value ETF, where 14,500,000 units were destroyed, or a 10.7% decrease week over week. Among the largest underlying components of IWS, in morning trading today Sempra Energy is up about 0.3%, and Williams Companies is up by about 0.8%.