I noticed this correlation with UBS in/out and the SP a few years ago. It does not seem to match exactly but could be a guide. https://hotcopper.com.au/threads/an....2536209/page-6?post_id=15638945#.WOgxCLUmLYV
TAT Tartana Minerals firms up producer status with recent 150tn shipment of copper sulphate to the NT