i understand, but if you look at the data in the charts on that link, you will see that volume and inflows are both strong.

You could have $1T of volume but if there are equal sellers to buyers the flow will be $0

the site i linked shows inflow data. the chart i originally posted shows volume data.

I looked three times and couldn’t find volume data on that site 

charts_and_numbers

New All-Time High for BTC ETF Daily Volume (were only halfway through the day)

check out these inflow stats… to date, volume and inflows do appear to have some correlation

https://dune.com/hildobby/btc-etfs