And on a percentage change basis, the ETF with the biggest increase in inflows was the OBOR ETF (OBOR), which added 100,000 units, for a 33.3% increase in outstanding units. VIDEO: VTIP, OBOR: Big ETF Inflows The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc. Comparing units outstanding versus one week ago at the coverage universe of ETFs at ETF Channel, the biggest inflow was seen in the Vanguard Short-Term Inflation-Protected Securities ETF (VTIP), which added 14,412,646 units, or a 5.0% increase week over week.