Core Laboratories (CLB) Options Chain
NYSE: CLBEnergyOilfield Services/EquipmentUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 41
- Share price
- $10.09
- Put/call ratio (OI)
- 1.00
- Put/call ratio (volume)
- 1.50
- Expected move
- ±$1.81
- Open interest (C / P)
- 11 / 11
CLB options summary
The CLB options chain for the November 20, 2026 expiration lists 1 call and 2 put contracts, with 41 days until expiration. Open interest stands at 11 calls and 11 puts, a put/call ratio of 1.00, which is fairly balanced between calls and puts. At-the-money implied volatility near the $10.00 strike is 53.6%, which implies the market expects a move of about ±$1.81 (18.0%) in Core Laboratories stock by expiration.
The most open interest sits at the $12.50 call (11 contracts) and the $10.00 put (7 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CLB options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 10.00 | 0.55 | 0.80 | 0.70 | |||||
| 0.25 | 0.10 | 0.25 | 12.50 | 2.00 | 3.20 | 2.72 | |||||
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 CLB put/call ratio?
For the November 20, 2026 expiration, the CLB put/call ratio based on open interest is 1.00 (11 puts vs 11 calls), and 1.50 based on today's volume. A ratio above 1 means more puts than calls.
What is CLB's implied volatility?
At-the-money implied volatility for CLB options expiring November 20, 2026 is about 53.6%, an annualized estimate of how much the market expects Core Laboratories stock to move.
How many CLB option expiration dates are there?
CLB has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
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.