Materials stocks rose 1.9% to lead gainers in midday trading Wednesday as prices for gold and silver on the Comex exchange edged higher.
BHP Group (ASX:BHP) and Rio Tinto Group (ASX:RIO) both gained about 1%.
On the flip side, utilities stocks shed 1.6% to lead decliners as oil prices continued to trend downward.
Origin Energy (ASX:ORG) shares fell 2% in recent trade.