Constellation Energy (CEG) Options Chain

NASDAQ: CEGUtilitiesElectric Utilities: CentralUSD

284.43-15.16 (-5.06%)

Market open · Delayed 15 min · as of Oct 8, 3:53 PM ET

Expiration date

Expiration: Oct 9, 2026
Days to expiration: 1
Share price: $285.00
Put/call ratio (OI): 0.62
Put/call ratio (volume): 0.52
ATM implied volatility: 49.9%
Expected move: ±$7.44
Open interest (C / P): 10.06K / 6.28K

CEG options summary

The CEG options chain for the October 9, 2026 expiration lists 43 call and 34 put contracts, with 1 day until expiration. Open interest stands at 10,065 calls and 6,280 puts, a put/call ratio of 0.62, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $285.00 strike is 49.9%, which implies the market expects a move of about ±$7.44 (2.6%) in Constellation Energy stock by expiration.

The most open interest sits at the $275.00 call (1.39K contracts) and the $290.00 put (673 contracts).

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

CEG options chain · October 9, 2026

CEG 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
—	—	—	—	—	—	175.00	0.00	4.30	2.48	441.2%	—	1
—	—	—	—	—	—	180.00	0.00	4.30	2.53	420.0%	—	1
3	2	252.6%	108.40	82.50	85.50	200.00	—	—	—	—	—	—
—	—	—	—	—	—	205.00	0.00	4.30	0.55	320.7%	—	1
—	—	—	—	—	—	210.00	0.00	0.05	0.24	150.0%	10	28
—	—	—	—	—	—	215.00	0.00	4.30	0.38	283.6%	—	1
4	1	185.9%	75.20	62.50	65.40	220.00	0.00	0.05	0.03	129.7%	1	244
—	—	—	—	—	—	225.00	0.00	0.05	0.05	118.8%	1	30
14	14	165.3%	74.22	55.00	57.90	227.50	0.00	4.30	0.23	238.6%	2	17
22	1	165.0%	53.70	52.50	55.50	230.00	0.00	0.05	0.03	109.4%	1	75
7	6	151.8%	69.15	50.00	52.90	232.50	0.00	4.00	0.39	216.7%	2	5
1	1	145.1%	28.48	47.50	50.40	235.00	0.00	0.30	0.29	123.6%	1	191
1	1	123.0%	56.32	45.00	47.70	237.50	0.00	0.85	0.01	139.9%	1	15
22	1	131.7%	44.57	42.50	45.40	240.00	0.00	0.15	0.05	101.6%	29	334
4	3	118.8%	60.02	40.00	42.80	242.50	0.00	0.60	0.32	118.8%	12	55
4	1	118.6%	58.50	37.50	40.40	245.00	0.00	0.30	0.33	100.2%	2	473
2	1	117.1%	58.15	35.00	38.00	247.50	0.00	0.35	0.34	96.7%	1	113
56	4	105.4%	59.00	32.50	35.40	250.00	0.00	0.05	0.04	69.9%	5	537
63	2	98.8%	41.85	30.00	32.90	252.50	0.00	1.25	0.05	108.7%	2	78
55	1	104.4%	29.50	27.30	30.70	255.00	0.00	0.10	0.65	65.6%	17	141
63	10	93.8%	33.90	25.00	28.10	257.50	0.00	0.30	0.30	71.4%	3	135
171	3	86.7%	32.20	22.60	25.60	260.00	0.00	0.25	0.01	63.7%	175	293
54	9	72.6%	36.45	20.10	22.90	262.50	0.00	0.85	0.15	73.5%	5	134
123	33	72.7%	18.90	17.60	20.60	265.00	0.00	0.50	0.11	59.6%	28	97
96	7	68.3%	13.20	15.80	18.20	267.50	0.05	0.30	0.37	55.5%	2	29
188	25	63.3%	13.20	13.50	15.80	270.00	0.20	0.50	0.38	50.7%	123	484
139	14	63.7%	12.54	10.20	13.70	272.50	—	—	—	—	—	—
1,394	269	58.6%	9.50	8.80	11.40	275.00	0.65	1.05	0.90	52.4%	378	428
149	11	52.5%	7.39	6.50	9.10	277.50	1.05	1.95	0.80	51.0%	43	49
829	62	46.8%	6.10	5.20	6.90	280.00	1.25	2.60	2.10	56.1%	210	166
77	34	44.4%	4.50	2.80	5.10	282.50	2.40	3.50	3.50	55.4%	176	249
CEG $285.00
320	222	42.8%	3.10	2.35	3.60	285.00	3.40	4.80	4.05	57.0%	224	605
49	28	44.6%	2.21	1.40	2.65	287.50	—	—	—	—	—	—
132	37	44.6%	1.48	0.95	1.80	290.00	6.20	9.10	7.50	55.8%	154	673
323	154	50.6%	0.65	0.50	1.05	295.00	10.30	13.10	12.00	61.4%	197	284
1,092	759	44.6%	0.20	0.15	0.25	300.00	14.70	17.90	16.75	70.3%	157	311
991	1,173	50.4%	0.14	0.10	0.20	305.00	—	—	—	—	—	—
609	429	53.9%	0.07	0.05	0.10	310.00	—	—	—	—	—	—
1,088	90	62.5%	0.10	0.00	0.15	315.00	—	—	—	—	—	—
516	56	61.7%	0.05	0.00	0.05	320.00	—	—	—	—	—	—
178	13	75.0%	0.05	0.00	0.10	325.00	39.40	43.40	21.10	136.5%	6	3
441	260	90.0%	0.11	0.00	0.20	330.00	—	—	—	—	—	—
165	22	89.8%	0.08	0.00	0.10	335.00	—	—	—	—	—	—
183	6	89.8%	0.05	0.00	0.05	340.00	—	—	—	—	—	—
150	1	119.3%	0.09	0.00	0.30	345.00	—	—	—	—	—	—
169	1	123.8%	0.06	0.00	0.25	350.00	—	—	—	—	—	—
13	1	220.8%	0.18	0.00	4.30	355.00	—	—	—	—	—	—
98	10	230.8%	0.23	0.00	4.30	360.00	—	—	—	—	—	—
7	2	240.6%	0.16	0.00	4.30	365.00	—	—	—	—	—	—

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 CEG put/call ratio?

For the October 9, 2026 expiration, the CEG put/call ratio based on open interest is 0.62 (6,280 puts vs 10,065 calls), and 0.52 based on today's volume. A ratio above 1 means more puts than calls.

What is CEG's implied volatility?

At-the-money implied volatility for CEG options expiring October 9, 2026 is about 49.9%, an annualized estimate of how much the market expects Constellation Energy stock to move.

How many CEG option expiration dates are there?

CEG has 19 listed expiration dates, from Oct 9, 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.