How can you ascribe meaning to these data since the only investors who can move money into or out of ETF and other ETP are a few Authorized Participants, who are usually institutional traders arbitraging the small intraday differences between fund NAV and market price on a "closed cycle" basis?  Iow, money a/o shares moved out of the fund usually goes into a trust with the idea the trades soon will be reversed.

 

All other investors must buy and sell in the secondary market and their volumes are not counted in ETP fund flows. I can understand fund flows related to mutual funds since their sales and redemptions  represent the market..