Australian miners jump most in about 19 months as copper prices rebound

** Australian miners .AXMM gain as much as 5.8%, logging their best session since early April 2025

** Copper prices rebounded on Wednesday as early concerns that the US election could reduce expectations for copper tariffs and AI data centre demand were offset by healthy demand and shortages outside the US MET/L

** Rio Tinto RIO.AX, BHP BHP.AX and Fortescue FMG.AX gain more than 4.4% each

** Sub-index up 6.3% YTD