Comparing units outstanding versus one week ago at the coverage universe of ETFs at ETF Channel, the biggest inflow was seen in the iShares 1-3 Year Treasury Bond ETF, which added 13,300,000 units, or a 8.7% increase week over week. And on a percentage change basis, the ETF with the biggest increase in inflows was the Daily Natural Gas Related Bear 3X Shares, which added 100,000 units, for a 36.4% increase in outstanding units.