Cullinan Therapeutics (CGEM) Options Chain
NASDAQ: CGEMHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 69
- Share price
- $15.53
- Put/call ratio (OI)
- 0.97
- Put/call ratio (volume)
- 1.22
- ATM implied volatility
- 105.5%
- Expected move
- ±$7.12
- Open interest (C / P)
- 1.39K / 1.35K
CGEM options summary
The CGEM options chain for the December 18, 2026 expiration lists 16 call and 12 put contracts, with 69 days until expiration. Open interest stands at 1,387 calls and 1,350 puts, a put/call ratio of 0.97, which is fairly balanced between calls and puts. At-the-money implied volatility near the $16.00 strike is 105.5%, which implies the market expects a move of about ±$7.12 (45.9%) in Cullinan Therapeutics stock by expiration.
The most open interest sits at the $12.00 call (408 contracts) and the $15.00 put (836 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CGEM options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 11.00 | 10.00 | 14.60 | 3.00 | — | — | — | |||||
| 7.00 | 4.00 | 9.00 | 5.00 | — | — | — | |||||
| 13.75 | 6.50 | 11.00 | 7.00 | 0.00 | 4.90 | 1.15 | |||||
| 8.19 | 5.50 | 10.00 | 8.00 | — | — | — | |||||
| 6.50 | 4.10 | 8.50 | 10.00 | 0.00 | 0.00 | 3.00 | |||||
| 4.50 | 2.50 | 7.00 | 12.00 | 0.00 | 4.90 | 2.57 | |||||
| — | — | — | 13.00 | 0.00 | 4.90 | 3.60 | |||||
| 3.25 | 1.50 | 6.00 | 14.00 | 0.00 | 0.00 | 3.90 | |||||
| 3.50 | 1.65 | 4.50 | 15.00 | 0.20 | 4.90 | 4.80 | |||||
| — | — | — | 16.00 | 0.70 | 5.50 | 2.75 | |||||
| 7.00 | 0.30 | 4.90 | 17.00 | 1.20 | 6.00 | 3.48 | |||||
| 1.65 | 0.40 | 4.90 | 18.00 | 2.00 | 6.50 | 5.00 | |||||
| 1.50 | 0.65 | 3.10 | 20.00 | 3.50 | 8.00 | 5.90 | |||||
| 1.00 | 0.60 | 2.00 | 22.00 | 5.10 | 9.50 | 5.66 | |||||
| 0.80 | 0.00 | 4.50 | 25.00 | 7.80 | 12.00 | 6.80 | |||||
| 2.00 | 0.55 | 4.90 | 27.00 | — | — | — | |||||
| 1.90 | 0.00 | 4.90 | 30.00 | — | — | — | |||||
| 1.45 | 0.00 | 3.90 | 35.00 | — | — | — | |||||
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 CGEM put/call ratio?
For the December 18, 2026 expiration, the CGEM put/call ratio based on open interest is 0.97 (1,350 puts vs 1,387 calls), and 1.22 based on today's volume. A ratio above 1 means more puts than calls.
What is CGEM's implied volatility?
At-the-money implied volatility for CGEM options expiring December 18, 2026 is about 105.5%, an annualized estimate of how much the market expects Cullinan Therapeutics stock to move.
How many CGEM option expiration dates are there?
CGEM has 8 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.