Energy stocks led gainers with a rise of 2.6% in midday trading Wednesday as oil prices advanced more than 2%.
Woodside Energy (ASX:WDS) gained nearly 3%, and Santos (ASX:STO) jumped almost 5%.
Most other sectors were lower, however, with materials shedding 2.4% to lead decliners.
BHP Group (ASX:BHP) fell about 3%, and Rio Tinto Group (ASX:RIO) retreated past 2%.