Copper VS Baltic Dry Index
Although I have not located the specific index, I have compared copper with the main components of the index and in fact there is a clear relationship between the two intrument, it is closely related to the flow rate between shipments and the cooper is very simple.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.