Century Aluminum (CENX) Options Chain

NASDAQ: CENXIndustrialsAluminumUSD

36.76+0.38 (+1.04%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $36.76
Put/call ratio (OI): 0.73
Put/call ratio (volume): 0.10
ATM implied volatility: 59.9%
Expected move: ±$11.29
Open interest (C / P): 6.90K / 5.03K

CENX options summary

The CENX options chain for the January 15, 2027 expiration lists 29 call and 25 put contracts, with 96 days until expiration. Open interest stands at 6,899 calls and 5,032 puts, a put/call ratio of 0.73, which is fairly balanced between calls and puts. At-the-money implied volatility near the $37.00 strike is 59.9%, which implies the market expects a move of about ±$11.29 (30.7%) in Century Aluminum stock by expiration.

The most open interest sits at the $55.00 call (1.88K contracts) and the $45.00 put (1.52K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

CENX options chain · January 15, 2027

CENX calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
1	1	—	41.85	41.80	45.70	3.00	—	—	—	—	—	—
0	5	—	44.90	0.00	0.00	8.00	0.00	0.85	0.13	193.2%	2	12
0	4	—	60.50	0.00	0.00	10.00	0.00	0.00	0.09	50.0%	5	0
54	1	459.1%	30.20	30.70	33.50	12.00	0.00	0.70	0.05	137.7%	1	185
21	1	368.0%	31.51	27.20	31.10	15.00	0.00	0.00	0.10	50.0%	4	0
46	2	325.3%	29.78	25.30	29.10	17.00	0.00	0.85	0.20	103.1%	2	56
120	5	85.1%	16.60	16.00	18.40	20.00	0.00	0.50	0.25	74.6%	3	40
0	1	—	25.65	0.00	0.00	22.00	0.05	0.95	0.35	76.5%	7	15
274	1	76.9%	15.50	12.00	13.60	25.00	0.25	0.85	0.75	62.6%	3	106
41	1	69.1%	10.30	10.00	11.90	27.00	0.55	0.95	0.93	58.5%	1	82
126	1	68.5%	19.15	8.10	9.50	30.00	1.15	1.90	1.58	59.2%	2	115
106	92	63.6%	7.56	6.40	8.10	32.00	1.75	2.85	2.60	60.6%	2	16
318	2	64.2%	5.30	5.10	6.20	35.00	2.90	4.10	3.50	58.8%	9	43
CENX $36.76
10	1	62.5%	7.40	3.90	5.30	37.00	3.90	5.00	3.90	57.3%	3	516
209	1	59.7%	3.50	2.70	3.80	40.00	5.80	6.90	5.10	57.9%	1	1,122
46	15	59.2%	2.85	2.10	3.10	42.00	7.00	8.50	6.87	58.0%	1	78
58	11	59.6%	2.05	1.45	2.35	45.00	9.20	10.80	10.53	57.5%	1	1,522
648	3	60.4%	1.75	1.15	2.00	47.00	10.80	12.60	7.95	58.5%	1	18
238	1,011	61.2%	1.19	0.80	1.55	50.00	13.60	15.30	15.00	61.9%	4	41
1,878	1	64.3%	0.92	0.25	1.35	55.00	0.00	0.00	15.50	—	1	0
1,668	20	65.1%	0.61	0.05	0.95	60.00	22.50	24.60	24.65	58.6%	2	1,026
268	1	70.8%	0.63	0.05	0.85	65.00	0.00	0.00	19.00	—	50	0
249	20	74.6%	0.36	0.00	0.75	70.00	24.40	27.20	24.60	—	1	12
58	5	80.5%	0.34	0.00	0.75	75.00	28.50	32.60	27.25	—	17	25
122	45	85.8%	0.20	0.00	0.75	80.00	24.10	26.70	28.25	—	1	1
89	20	90.8%	0.20	0.00	0.75	85.00	27.80	30.60	32.15	—	1	1
0	1	50.0%	2.05	0.00	0.00	90.00	—	—	—	—	—	—
0	10	50.0%	1.50	0.00	0.00	95.00	—	—	—	—	—	—
251	20	102.4%	0.14	0.00	0.70	100.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the CENX put/call ratio?

For the January 15, 2027 expiration, the CENX put/call ratio based on open interest is 0.73 (5,032 puts vs 6,899 calls), and 0.10 based on today's volume. A ratio above 1 means more puts than calls.

What is CENX's implied volatility?

At-the-money implied volatility for CENX options expiring January 15, 2027 is about 59.9%, an annualized estimate of how much the market expects Century Aluminum stock to move.

How many CENX option expiration dates are there?

CENX has 7 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.