ASM Chart Thread, page-1799

There's no simple way of finding out, and you're usually always looking at backdated data. You can search for specific funds via their provider site and there should be a way to see the full holdings in a lot of circumstances. But it's often only updated quarterly or 6 monthly depending on the fund.
Would be nice to be seen in REMX, but they only have 20 holdings (incl. Lynas), so that's probably a longer term dream for when ASM is a bigger fish.

Otherwise, you could just generally email enquiry various providers of ETFs and managed funds and ask if ASM is on the radar, but I'm not sure what response you'd get, if any!