CENX / Century Aluminum Company - Put/Call Ratio, Options Sentiment, Unusual Options Activity

Put/Call Ratios - Forward Looking and Historical

By looking at the put/call ratios of specific expirations, we can deduce what the options markets think of the short, medium, and long-term outlook of the company.

Expiry	DTX	Open Put Interest	Open Call Interest	Put/Call Ratio
2025-09-19	13	12,867
2025-10-17	41	432
2025-12-19	104	11,426
2026-01-16	132	7,428
2026-03-20	195	282
2027-01-15	496	343

Date	Put OI	Put OI (OTM)	Call OI	Call OI (OTM)	Put/Call Ratio	Put/Call Ratio (OTM)
2025-09-05	32,778	30,832
2025-09-04	32,765	30,834
2025-09-03	32,729	30,839
2025-09-02	32,666	30,800
2025-08-29	32,647	30,788
2025-08-28	32,578	30,769
2025-08-27	32,427	31,817
2025-08-26	32,381	30,652
2025-08-25	32,304	30,607
2025-08-22	31,897	30,258
2025-08-21	31,555	29,929
2025-08-20	30,906	29,311
2025-08-19	30,390	28,905
2025-08-18	30,295	28,844
2025-08-15	33,853	33,075
2025-08-14	33,862	33,102
2025-08-13	33,810	33,515
2025-08-12	33,795	33,124
2025-08-11	33,661	31,604
2025-08-08	31,302	30,756

Unusual Options Activity - Trade Volume

The Put/Call Ratio shows the total number of disclosed open put option positions divided by the number of open call option options. Since puts are generally a bearish bet and calls are a bullish bet, put/call ratios greater than 1 indicate a bearish sentiment, and ratios less than one indicate a bullish sentiment.

Unusual options activity (UOA) is generally considered a strong signal for a directional price movement. One metric of unusual options activity is the total volume of put or call options divided by the open interest in the same option type. If the total volume of call or put options exceeds the current open interest, then that is considered unusual and indicates a strong directional signal. In the table below, any date on which the volume of an option exceeds the current open interest is highlighted in green (for call options) or red (for put options).

For example, if, on any trading day, the call volume exceeds the current call open interest, then the Call Volume/Call OI ratio will be greater than one and that cell in the able will be highlighted in green. This would indicate a significant purchase of call options, which is a bullish signal. Likewise, if the opposite is true - the put volume exceeds the put open interest, then the table cell would be highlighted in red and represent a strong bearish signal.

Update Frequency: Daily

Date	Put Volume	Put OI	Put Volume /Put OI	Call Volume	Call OI	Call Volume /Call OI
2025-09-05	75	32,778		282	34,923
2025-09-04	200	32,765		135	34,854
2025-09-03	78	32,729		238	34,825
2025-09-02	316	32,666		418	34,653
2025-08-29	34	32,647		118	34,594
2025-08-28	153	32,578		152	34,555
2025-08-27	182	32,427		145	34,448
2025-08-26	243	32,381		310	34,214
2025-08-25	146	32,304		463	33,828
2025-08-22	525	31,897		527	33,450
2025-08-21	413	31,555		348	33,322
2025-08-20	796	30,906		306	33,252
2025-08-19	672	30,390		839	32,878
2025-08-18	122	30,295		2,404	31,855
2025-08-15	172	33,853		811	41,282
2025-08-14	114	33,862		318	41,337
2025-08-13	164	33,810		1,745	40,713
2025-08-12	194	33,795		502	40,476
2025-08-11	407	33,661		562	40,369
2025-08-08	3,837	31,302		1,453	39,771
2025-08-07	1,074	31,005		2,100	39,325
2025-08-06	231	30,882		523	38,991
2025-08-05	175	30,791		2,091	37,322
2025-08-04	279	30,626		1,350	36,457
2025-08-01	710	30,744		128	36,409

Option Premium Bought/Sold - Total Market

Update Frequency: Daily

Option Greeks - Delta, Gamma, Theta

Update Frequency: Daily

Option Trading Volume - Total Market

Update Frequency: Daily

Option Trading Volume - Exchange

Update Frequency: Daily