Caribou Biosciences (CRBU) Options Chain
NASDAQ: CRBUHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $0.4602
- Put/call ratio (OI)
- 0.16
- Put/call ratio (volume)
- 0.44
- ATM implied volatility
- 606.3%
- Expected move
- ±$0.3864
- Open interest (C / P)
- 3.19K / 497
CRBU options summary
The CRBU options chain for the October 16, 2026 expiration lists 7 call and 5 put contracts, with 7 days until expiration. Open interest stands at 3,189 calls and 497 puts, a put/call ratio of 0.16, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $0.50 strike is 606.3%, which implies the market expects a move of about ±$0.3864 (84.0%) in Caribou Biosciences stock by expiration.
The most open interest sits at the $2.00 call (1.36K contracts) and the $2.00 put (154 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CRBU options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.05 | 0.00 | 0.50 | 0.50 | 0.00 | 0.05 | 0.10 | |||||
| 0.04 | 0.00 | 0.05 | 1.00 | — | — | — | |||||
| 0.05 | 0.00 | 0.05 | 1.50 | 0.75 | 1.75 | 1.19 | |||||
| 0.05 | 0.00 | 0.05 | 2.00 | 0.90 | 1.80 | 0.85 | |||||
| 0.01 | 0.00 | 0.05 | 2.50 | 0.50 | 1.50 | 0.71 | |||||
| 0.05 | 0.00 | 0.00 | 5.00 | — | — | — | |||||
| 0.05 | 0.00 | 0.05 | 7.50 | 5.00 | 6.50 | 5.86 | |||||
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 CRBU put/call ratio?
For the October 16, 2026 expiration, the CRBU put/call ratio based on open interest is 0.16 (497 puts vs 3,189 calls), and 0.44 based on today's volume. A ratio above 1 means more puts than calls.
What is CRBU's implied volatility?
At-the-money implied volatility for CRBU options expiring October 16, 2026 is about 606.3%, an annualized estimate of how much the market expects Caribou Biosciences stock to move.
How many CRBU option expiration dates are there?
CRBU has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.