Unusual Options Activity
CENX Unusual Options Activity - Century Aluminum
- Last active day
- September 29, 2026
- Active days (30d)
- 4
- Biggest recent print
- Put $40.0000 · $529K
AI summary
On September 29, 2026, Century Aluminum Company (CENX) experienced notable options activity with a significant put transaction. A single print was recorded for a put option with a strike price of $40, set to expire on November 20, 2026. The premium for this transaction was $528,500, indicating a strong interest in this particular option. The volume to open interest ratio for this put option stands at 4.7, suggesting that the volume is relatively high compared to the existing open interest. Over the past 30 days, CENX has seen active options trading on four days, reflecting a potential increase in market interest. The absence of call premiums in this print highlights a focus on bearish sentiment in the current options landscape for CENX.
AI-generated summary
CENX was last active on September 29, 2026.
Prints on September 29, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| CENX | Put | $40.0000 | 11/20/26 (53d) | 4.7× | $529K | 65% |
History
- 2026-09-291 prints$0K calls$529K puts
- 2026-09-281 prints$0K calls$529K puts
- 2026-09-242 prints$408K calls$0K puts
- 2026-09-232 prints$408K calls$0K puts
- 2026-08-131 prints$83K calls$0K puts
- 2026-08-121 prints$83K calls$0K puts
- 2026-07-281 prints$306K calls$0K puts
- 2026-07-271 prints$306K calls$0K puts
- 2026-07-171 prints$0K calls$823K puts
- 2026-07-163 prints$582K calls$1.6M puts
- 2026-07-152 prints$582K calls$789K puts
- 2026-06-162 prints$503K calls$0K puts
- 2026-06-152 prints$503K calls$0K puts
- 2026-06-111 prints$0K calls$428K puts
- 2026-06-102 prints$0K calls$570K puts
- 2026-06-091 prints$0K calls$142K puts
- 2026-05-141 prints$2.2M calls$0K puts
- 2026-04-204 prints$6.9M calls$0K puts
- 2026-04-071 prints$1.3M calls$0K puts
- 2026-04-012 prints$587K calls$455K puts
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