I don’t know how accurate that list is. I am from Canada and we got that Purpose BTC ETF which is actually a spot etf. Currently it has 35K bitcoins which is around $1.5B but the chart says it’s only 650M which is not accurate.
I don’t have time to check all the other etfs. It’s easy to check, usually the AUM is listed as soon as you google the etf name so it’s not hard to track.
Yup, Purpose ETF (BTCC) is showing to have assets of 2bn:
https://ycharts.com/companies/BTCC.B.TO/total_assets_under_management, assuming this is presented in CAD, that would be around 1.5bn in real dollars.
I've checked a few random ones, some of them seem correct but few of them were quite far off from what's stated in the table. So either bitmex researcher(s) didn't do a great job, or there's something I'm missing.