Consumer discretionary stocks were rising 1% to lead gainers in midday trading Monday.

Wesfarmers (ASX:WES) was advancing nearly 2% and Lottery Corp. (ALX:TLC) almost 1%.

On the flip side, energy stocks were shedding almost 3% as oil prices gained amid renewed uncertainty surrounding the passage of ships through the Strait of Hormuz and a potential second round of talks between the US and Iran.

Viva Energy Group (ASX:VEA) was down more than 5% after saying its fire-hit Geelong refinery is expected to produce diesel and jet fuel at about 80% of capacity and petrol at roughly 60% of capacity in the short term. The company also reported a 5.1% year-over-year increase in first-quarter sales volume.