CENX Unusual Option Activity
Century Aluminum Co (CENX) option volume on Nov 4, 2026 was 2.1% of open interest, well below the 20-day average of 5.9%. Calls made up 60.8% of the volume.
CENX Unusual Options FAQ
What makes option activity unusual?
Option activity is usually called unusual when a contract trades much more volume than its open interest, which can mean traders are opening new positions.
Is CENX seeing unusual options activity?
On Nov 4, 2026, Century Aluminum options traded 1.33K contracts against 64.13K open, a volume to open interest ratio of 0.02, well below its 20-day average. The table above lists the contracts with the highest ratios.
Are CENX traders trading more calls or puts?
Calls made up 60.8% of Century Aluminum option volume on Nov 4, 2026, a put/call ratio of 0.65, so calls outnumber puts. The CENX option volume chart shows calls and puts by strike.
What is Century Aluminum Co?
Century Aluminum Co produces primary aluminum standard grade and value-added products.