Comparing units outstanding versus one week ago at the coverage universe of ETFs at ETF Channel, the biggest inflow was seen in the ProShares UltraPro Short QQQ, which added 20,600,000 units, or a 8.0% increase week over week. And on a percentage change basis, the ETF with the biggest increase in inflows was the NUSB ETF, which added 400,000 units, for a 39.0% increase in outstanding units.