- A company’s revenue needs to be generated or expected to be generated in copper mining and/or closely related activities (e.g. exploration or refining of copper).
- A company that has publicly reported activities in the copper mining space or closely related areas (e.g. exploration or refining of copper).
To be remain eligible, companies included in the index must maintain a minimum market capitalisation of US$100 million and average daily turnover of $0.25 million over the last three months. To become eligible, new companies must have a market capitalisation of $US200 million and a minimum average daily turnover of $0.5 million.