Century Aluminum is trading 4.1% up in pre-market at $33.99 on October 23, 2026; no confirmed direct catalyst was available. - The price compares with the October 22 close of $32.65, based on the supplied price context. - Aluminum was up 0.37%, but that modest move does not establish a cause. Major indexes were mixed-to-lower in the supplied pre-market context. - No volume data was available. Search results identified no fresh company announcement; the investor page lists Q2 results as its recent release.