Kosmos Energy (KOS) Options Chain

NYSE: KOSEnergyOil & Gas ProductionUSD

2.64-0.05 (-1.86%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $2.64
Put/call ratio (OI): 1.01
Put/call ratio (volume): 1.65
ATM implied volatility: 74.8%
Expected move: ±$0.6538
Open interest (C / P): 3.79K / 3.83K

KOS options summary

The KOS options chain for the November 20, 2026 expiration lists 8 call and 3 put contracts, with 40 days until expiration. Open interest stands at 3,788 calls and 3,834 puts, a put/call ratio of 1.01, which is fairly balanced between calls and puts. At-the-money implied volatility near the $2.50 strike is 74.8%, which implies the market expects a move of about ±$0.6538 (24.8%) in Kosmos Energy stock by expiration.

The most open interest sits at the $3.00 call (2.44K contracts) and the $2.50 put (3.16K contracts).

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

KOS options chain · November 20, 2026

KOS 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	—	334.4%	2.35	1.90	2.45	0.50	—	—	—	—	—	—
0	2	146.9%	0.75	0.90	1.50	1.50	—	—	—	—	—	—
711	21	86.7%	0.64	0.65	0.75	2.00	0.00	0.15	0.05	93.8%	—	78
503	23	80.1%	0.37	0.30	0.40	2.50	0.15	0.20	0.18	69.5%	229	3,157
KOS $2.64
2,437	73	78.9%	0.15	0.10	0.20	3.00	0.40	0.55	0.55	68.0%	5	599
125	3	85.9%	0.08	0.05	0.10	3.50	—	—	—	—	—	—
6	20	81.3%	0.05	0.00	0.05	4.00	—	—	—	—	—	—
5	—	167.2%	0.03	0.00	0.25	5.00	—	—	—	—	—	—

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 KOS put/call ratio?

For the November 20, 2026 expiration, the KOS put/call ratio based on open interest is 1.01 (3,834 puts vs 3,788 calls), and 1.65 based on today's volume. A ratio above 1 means more puts than calls.

What is KOS's implied volatility?

At-the-money implied volatility for KOS options expiring November 20, 2026 is about 74.8%, an annualized estimate of how much the market expects Kosmos Energy stock to move.

How many KOS option expiration dates are there?

KOS has 6 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.