Alcoa lowered its full-year 2026 alumina production and shipment guidance.
Operational instability at the Pinjarra refinery in Western Australia prompted the revision. Gas supply disruptions linked to Cyclone Narelle exacerbated these issues beginning in late March.
The company reported record second-quarter revenue of nearly $4.0 billion. Higher metal prices fueled strong performance within the aluminum segment. However, adjusted earnings per share of $2.12 missed analyst estimates.
Alcoa shares fell in after-hours trading. Investors reacted to the guidance cut and the earnings miss.