Copper is one of my recurring topics; I even squeezed an interview about it into the “Alokas haastattelee” (Alokas interviews) thread 
And, of course, I’ve also loved bringing up the topic in the Metso thread and, if I recall correctly, in other threads as well. 
It would be exciting to play with copper or try to profit from it, just like with my other recurring themes—though I wouldn’t know how to invest in it or time it. Uranium was another exciting one, but I’ve shared less about that. I don’t know what to trust and what not to—just look at my portfolio. Everything I follow the most and where I’ve put my money has been pretty much a bad deal. Then again, my best-performing investments are mostly the ones I’ve guessed at, but even most of those have been what they have been.
Some have even asked me why I don’t invest in what I talk about (in person) or write about (in chats) the most. Nebius is probably the most copper-linked of my stocks, and even that isn’t really one.