🟢 Century Aluminum is trading 63.3% up in after-hours trading with no confirmed catalyst

Century Aluminum is trading 63.3% higher at $64.34 after hours, with no confirmed catalyst identified for the move.

• The supplied price data compares $64.34 with the September 22, 2026 closing price of $39.40.
• Searches found no confirmed September 22 company announcement, earnings release, or other reliable direct catalyst; available coverage discusses earlier tariff and production themes.
• The move is unconfirmed and may reflect limited liquidity or a pricing anomaly.