Cullinan Therapeutics (CGEM) Options Chain

NASDAQ: CGEMHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD

15.46-0.17 (-1.09%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $15.46
Put/call ratio (OI): 5.67
Put/call ratio (volume): 0.73
ATM implied volatility: 158.6%
Expected move: ±$3.63
Open interest (C / P): 463 / 2.63K

CGEM options summary

The CGEM options chain for the October 16, 2026 expiration lists 22 call and 19 put contracts, with 8 days until expiration. Open interest stands at 463 calls and 2,625 puts, a put/call ratio of 5.67, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $15.00 strike is 158.6%, which implies the market expects a move of about ±$3.63 (23.5%) in Cullinan Therapeutics stock by expiration.

The most open interest sits at the $20.00 call (119 contracts) and the $15.00 put (1.16K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

CGEM options chain · October 16, 2026

CGEM calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
7	1	1626.6%	12.30	10.10	14.10	3.00	0.00	0.00	0.30	50.0%	—	0
—	—	—	—	—	—	4.00	0.00	4.90	0.25	1674.2%	1	3
—	—	—	—	—	—	5.00	0.00	0.00	0.40	50.0%	1	0
—	—	—	—	—	—	6.00	0.00	0.00	0.45	50.0%	1	0
—	—	—	—	—	—	7.00	0.00	0.00	0.60	50.0%	1	0
—	—	—	—	—	—	8.00	0.00	3.80	0.90	741.4%	1	4
1	—	480.1%	8.00	5.10	9.90	9.00	0.00	0.00	1.80	50.0%	3	0
1	1	630.5%	7.60	5.50	10.00	10.00	0.00	4.90	0.50	657.6%	1	2
—	—	—	—	—	—	11.00	0.00	0.05	0.05	120.3%	1	2
0	—	—	4.50	0.00	0.00	12.00	—	—	—	—	—	—
0	3	—	8.80	0.00	0.00	13.00	0.80	5.50	4.00	521.7%	—	1
2	8	931.3%	5.64	6.00	10.50	14.00	0.00	1.85	0.25	178.5%	1	239
5	4	247.3%	1.05	0.00	4.90	15.00	0.25	0.60	0.53	69.9%	5	1,162
CGEM $15.46
76	8	294.1%	5.20	0.00	4.90	16.00	0.10	4.90	0.70	240.2%	1	332
46	15	333.2%	0.05	0.00	4.90	17.00	0.10	4.90	1.65	168.9%	—	124
37	11	234.4%	0.90	0.00	2.50	18.00	0.50	4.90	2.10	93.8%	—	145
10	1	397.3%	0.28	0.00	4.90	19.00	1.50	6.00	4.34	125.0%	1	384
119	1	203.7%	0.80	0.00	1.15	20.00	2.50	6.80	1.50	121.9%	1	227
17	7	449.0%	2.10	0.00	4.90	21.00	3.50	7.90	2.20	151.6%	76	0
45	30	393.0%	0.30	0.00	3.50	22.00	—	—	—	—	—	—
21	20	492.8%	0.30	0.00	4.90	23.00	—	—	—	—	—	—
15	10	408.8%	1.59	0.00	3.10	24.00	—	—	—	—	—	—
31	5	530.5%	0.05	0.00	4.90	25.00	—	—	—	—	—	—
2	1	547.7%	1.65	0.00	4.90	26.00	—	—	—	—	—	—
6	1	563.7%	1.45	0.00	4.90	27.00	—	—	—	—	—	—
6	1	411.3%	1.30	0.00	2.15	28.00	0.00	0.00	8.87	—	—	0
14	1	607.2%	1.05	0.00	4.90	30.00	—	—	—	—	—	—
2	1	667.4%	0.70	0.00	4.90	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 October 16, 2026 expiration, the CGEM put/call ratio based on open interest is 5.67 (2,625 puts vs 463 calls), and 0.73 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 October 16, 2026 is about 158.6%, 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.