BHP Group (ASX:BHP) shares rose past 2% in recent Wednesday trade, and Rio Tinto Group (ASX:RIO) gained nearly 2%, as copper prices posted a new record high.
Both stocks reached an all-time high earlier in the trading session.
Copper futures settled at $6.6495 a pound on Tuesday, and the benchmark price has now risen 38% compared with a year earlier, The Wall Street Journal reported.