CeriBell (CBLL) Options Chain
NASDAQ: CBLLHealth CareBiotechnology: Electromedical & Electrotherapeutic ApparatusUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
After hours: 23.15 0.00%
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $23.15
- Put/call ratio (OI)
- 1.05
- Put/call ratio (volume)
- 1.50
- Expected move
- ±$2.25
- Open interest (C / P)
- 19 / 20
CBLL options summary
The CBLL options chain for the October 16, 2026 expiration lists 2 call and 4 put contracts, with 8 days until expiration. Open interest stands at 19 calls and 20 puts, a put/call ratio of 1.05, which is fairly balanced between calls and puts. At-the-money implied volatility near the $22.50 strike is 65.7%, which implies the market expects a move of about ±$2.25 (9.7%) in CeriBell stock by expiration.
The most open interest sits at the $25.00 call (18 contracts) and the $17.50 put (13 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CBLL options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 17.50 | 0.00 | 0.75 | 0.20 | |||||
| 4.05 | 2.00 | 5.20 | 20.00 | 0.00 | 0.95 | 0.30 | |||||
| — | — | — | 22.50 | 0.00 | 1.30 | 0.38 | |||||
| 0.55 | 0.00 | 1.10 | 25.00 | 0.85 | 4.10 | 1.33 | |||||
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 CBLL put/call ratio?
For the October 16, 2026 expiration, the CBLL put/call ratio based on open interest is 1.05 (20 puts vs 19 calls), and 1.50 based on today's volume. A ratio above 1 means more puts than calls.
What is CBLL's implied volatility?
At-the-money implied volatility for CBLL options expiring October 16, 2026 is about 65.7%, an annualized estimate of how much the market expects CeriBell stock to move.
How many CBLL option expiration dates are there?
CBLL 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.