Comparing units outstanding versus one week ago at the coverage universe of ETFs at ETF Channel, the biggest inflow was seen in the SPDR Bloomberg 1-3 Month T-Bill ETF, which added 16,100,000 units, or a 4.5% increase week over week. And on a percentage change basis, the ETF with the biggest increase in inflows was the XVOL ETF, which added 100,000 units, for a 36.4% increase in outstanding units.