RNF,
Of all the copper stocks that you use to compare with CDU you choose SFR.
SFR was around 3-3.50 in July having finished at 6.82 today.
CDU was around 4.50-5 in July having finished at 2.19 today.
I would consider a doubling in share value better than a halving in share value.
What about OZL, AOH, EQN, RXM ??