CeriBell (CBLL) Options Chain
NASDAQ: CBLLHealth CareBiotechnology: Electromedical & Electrotherapeutic ApparatusUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $23.63
- Put/call ratio (OI)
- 0.29
- Put/call ratio (volume)
- 1.00
- Expected move
- ±$4.60
- Open interest (C / P)
- 7 / 2
CBLL options summary
The CBLL options chain for the November 20, 2026 expiration lists 2 call and 2 put contracts, with 40 days until expiration. Open interest stands at 7 calls and 2 puts, a put/call ratio of 0.29, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $22.50 strike is 58.8%, which implies the market expects a move of about ±$4.60 (19.5%) in CeriBell stock by expiration.
The most open interest sits at the $30.00 call (6 contracts) and the $22.50 put (2 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CBLL options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 22.50 | 0.05 | 2.55 | 1.65 | |||||
| 2.00 | 0.00 | 2.90 | 25.00 | — | — | 2.44 | |||||
| 0.70 | 0.00 | 1.35 | 30.00 | — | — | — | |||||
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 CBLL put/call ratio?
For the November 20, 2026 expiration, the CBLL put/call ratio based on open interest is 0.29 (2 puts vs 7 calls), and 1.00 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 November 20, 2026 is about 58.8%, 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.