Comparing units outstanding versus one week ago at the coverage universe of ETFs at ETF Channel, the biggest inflow was seen in the ETHU ETF, which added 12,820,000 units, or a 11.5% increase week over week. And on a percentage change basis, the ETF with the biggest increase in inflows was the iPath Series B S&P 500 VIX Short-Term Futures ETN, which added 2,436,100 units, for a 39.4% increase in outstanding units.