CGEM · Cullinan Therapeutics, Inc.

Track CGEM — free Ask ALVIS about CGEM

$17.21 -0.27 (-1.52%) At close · Jul 29

Market Cap

$1.07B

61.46M

Options Chain

15-min delayed Underlying $17.21 · today Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 52 contracts

Put / call OI

4.70

Put-heavy positioning

Open interest

593

contracts outstanding

Volume

177

traded today

Max pain

$17.00

$0.21 below spot

ATM implied vol

118.2%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Oct 16 78d Dec 18 141d Jan 15 169d Mar 19 232d Jun 17 322d Dec 17 505d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	353.2%	0.968	—		$0.03	-0.045	428.3%	22	15
Call · $5 In the money Last — Breakeven — Implied vol 353.2% Delta 0.968 ≈97% ITM Gamma 0.005 Theta -0.025 Vega 0.004 Open interest 0 Model this call Put · $5 Last $0.03 Breakeven $4.97 Implied vol 428.3% Delta -0.045 ≈4% ITM Gamma 0.005 Theta -0.039 Vega 0.004 Open interest 15 Model this put
0	—	303.8%	0.962	—		$0.03	—	—	18	0
Call · $6 In the money Last — Breakeven — Implied vol 303.8% Delta 0.962 ≈96% ITM Gamma 0.006 Theta -0.024 Vega 0.004 Open interest 0 Model this call Put · $6 Last $0.03 Breakeven $5.97 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	262.9%	0.956	—		$0.04	—	—	42	1
Call · $7 In the money Last — Breakeven — Implied vol 262.9% Delta 0.956 ≈96% ITM Gamma 0.008 Theta -0.024 Vega 0.005 Open interest 0 Model this call Put · $7 Last $0.04 Breakeven $6.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	227.9%	0.949	—		—	-0.065	259%	—	0
Call · $8 In the money Last — Breakeven — Implied vol 227.9% Delta 0.949 ≈95% ITM Gamma 0.011 Theta -0.023 Vega 0.005 Open interest 0 Model this call Put · $8 Last — Breakeven — Implied vol 259% Delta -0.065 ≈6% ITM Gamma 0.011 Theta -0.031 Vega 0.005 Open interest 0 Model this put
0	—	241.8%	0.917	—		$0.05	-0.075	226.8%	24	24
Call · $9 In the money Last — Breakeven — Implied vol 241.8% Delta 0.917 ≈92% ITM Gamma 0.015 Theta -0.036 Vega 0.008 Open interest 0 Model this call Put · $9 Last $0.05 Breakeven $8.95 Implied vol 226.8% Delta -0.075 ≈8% ITM Gamma 0.015 Theta -0.031 Vega 0.005 Open interest 24 Model this put
0	—	170.3%	0.932	—		—	-0.087	198.1%	—	0
Call · $10 In the money Last — Breakeven — Implied vol 170.3% Delta 0.932 ≈93% ITM Gamma 0.018 Theta -0.022 Vega 0.006 Open interest 0 Model this call Put · $10 Last — Breakeven — Implied vol 198.1% Delta -0.087 ≈9% ITM Gamma 0.019 Theta -0.03 Vega 0.008 Open interest 0 Model this put
0	—	146%	0.922	—		—	-0.1	169.6%	—	0
Call · $11 In the money Last — Breakeven — Implied vol 146% Delta 0.922 ≈92% ITM Gamma 0.023 Theta -0.021 Vega 0.006 Open interest 0 Model this call Put · $11 Last — Breakeven — Implied vol 169.6% Delta -0.1 ≈10% ITM Gamma 0.024 Theta -0.028 Vega 0.009 Open interest 0 Model this put
0	—	123.9%	0.909	—		—	-0.117	143.7%	—	0
Call · $12 In the money Last — Breakeven — Implied vol 123.9% Delta 0.909 ≈91% ITM Gamma 0.031 Theta -0.02 Vega 0.006 Open interest 0 Model this call Put · $12 Last — Breakeven — Implied vol 143.7% Delta -0.117 ≈12% ITM Gamma 0.032 Theta -0.027 Vega 0.009 Open interest 0 Model this put
0	—	103.2%	0.892	—		—	-0.145	125.2%	—	0
Call · $13 In the money Last — Breakeven — Implied vol 103.2% Delta 0.892 ≈89% ITM Gamma 0.042 Theta -0.019 Vega 0.01 Open interest 0 Model this call Put · $13 Last — Breakeven — Implied vol 125.2% Delta -0.145 ≈15% ITM Gamma 0.042 Theta -0.027 Vega 0.01 Open interest 0 Model this put
0	—	81.9%	0.869	—		—	-0.166	98.3%	—	0
Call · $14 In the money Last — Breakeven — Implied vol 81.9% Delta 0.869 ≈87% ITM Gamma 0.061 Theta -0.018 Vega 0.01 Open interest 0 Model this call Put · $14 Last — Breakeven — Implied vol 98.3% Delta -0.166 ≈17% ITM Gamma 0.059 Theta -0.023 Vega 0.01 Open interest 0 Model this put
0	5	97.9%	0.755	$3.08		$0.60	-0.214	81%	10	324
Call · $15 In the money Last $3.08 Breakeven $18.08 Implied vol 97.9% Delta 0.755 ≈76% ITM Gamma 0.075 Theta -0.03 Vega 0.014 Open interest 0 Model this call Put · $15 Last $0.60 Breakeven $14.40 Implied vol 81% Delta -0.214 ≈21% ITM Gamma 0.085 Theta -0.022 Vega 0.014 Open interest 324 Model this put
11	1	115%	0.658	$2.68		—	-0.316	79.3%	—	0
Call · $16 In the money Last $2.68 Breakeven $18.68 Implied vol 115% Delta 0.658 ≈66% ITM Gamma 0.075 Theta -0.041 Vega 0.016 Open interest 11 Model this call Put · $16 Last — Breakeven — Implied vol 79.3% Delta -0.316 ≈32% ITM Gamma 0.107 Theta -0.027 Vega 0.015 Open interest 0 Model this put
25	25	139.9%	0.586	$2.59		$1.50	-0.429	96.4%	5	124
Call · $17 In the money Last $2.59 Breakeven $19.59 Implied vol 139.9% Delta 0.586 ≈59% ITM Gamma 0.066 Theta -0.053 Vega 0.017 Open interest 25 Model this call Put · $17 Last $1.50 Breakeven $15.50 Implied vol 96.4% Delta -0.429 ≈43% ITM Gamma 0.096 Theta -0.035 Vega 0.017 Open interest 124 Model this put
Underlying $17.21
1	1	106.1%	0.49	$1.50		—	-0.569	67.1%	—	0
Call · $18 Last $1.50 Breakeven $19.50 Implied vol 106.1% Delta 0.49 ≈49% ITM Gamma 0.088 Theta -0.041 Vega 0.017 Open interest 1 Model this call Put · $18 In the money Last — Breakeven — Implied vol 67.1% Delta -0.569 ≈57% ITM Gamma 0.138 Theta -0.024 Vega 0.017 Open interest 0 Model this put
53	10	83.6%	0.361	$1.00		—	-0.619	93%	—	0
Call · $19 Last $1.00 Breakeven $20.00 Implied vol 83.6% Delta 0.361 ≈36% ITM Gamma 0.105 Theta -0.03 Vega 0.016 Open interest 53 Model this call Put · $19 In the money Last — Breakeven — Implied vol 93% Delta -0.619 ≈62% ITM Gamma 0.097 Theta -0.033 Vega 0.016 Open interest 0 Model this put
14	13	88.9%	0.289	$1.29		—	-0.742	80.6%	—	0
Call · $20 Last $1.29 Breakeven $21.29 Implied vol 88.9% Delta 0.289 ≈29% ITM Gamma 0.09 Theta -0.029 Vega 0.016 Open interest 14 Model this call Put · $20 In the money Last — Breakeven — Implied vol 80.6% Delta -0.742 ≈74% ITM Gamma 0.096 Theta -0.024 Vega 0.012 Open interest 0 Model this put
0	—	87.4%	0.216	—		—	-0.845	73.2%	—	0
Call · $21 Last — Breakeven — Implied vol 87.4% Delta 0.216 ≈22% ITM Gamma 0.078 Theta -0.025 Vega 0.013 Open interest 0 Model this call Put · $21 In the money Last — Breakeven — Implied vol 73.2% Delta -0.845 ≈84% ITM Gamma 0.079 Theta -0.015 Vega 0.012 Open interest 0 Model this put
0	—	99.4%	0.197	—		—	-0.86	83.6%	—	0
Call · $22 Last — Breakeven — Implied vol 99.4% Delta 0.197 ≈20% ITM Gamma 0.065 Theta -0.026 Vega 0.013 Open interest 0 Model this call Put · $22 In the money Last — Breakeven — Implied vol 83.6% Delta -0.86 ≈86% ITM Gamma 0.064 Theta -0.016 Vega 0.009 Open interest 0 Model this put
0	—	110.9%	0.183	—		—	-0.89	87.5%	—	0
Call · $23 Last — Breakeven — Implied vol 110.9% Delta 0.183 ≈18% ITM Gamma 0.056 Theta -0.028 Vega 0.013 Open interest 0 Model this call Put · $23 In the money Last — Breakeven — Implied vol 87.5% Delta -0.89 ≈89% ITM Gamma 0.052 Theta -0.014 Vega 0.009 Open interest 0 Model this put
0	—	121.9%	0.172	—		—	-0.943	81.2%	—	0
Call · $24 Last — Breakeven — Implied vol 121.9% Delta 0.172 ≈17% ITM Gamma 0.049 Theta -0.03 Vega 0.013 Open interest 0 Model this call Put · $24 In the money Last — Breakeven — Implied vol 81.2% Delta -0.943 ≈94% ITM Gamma 0.037 Theta -0.008 Vega 0.005 Open interest 0 Model this put
0	—	130.7%	0.163	—		$7.77	-0.904	105.8%	1	1
Call · $25 Last — Breakeven — Implied vol 130.7% Delta 0.163 ≈16% ITM Gamma 0.044 Theta -0.031 Vega 0.009 Open interest 0 Model this call Put · $25 In the money Last $7.77 Breakeven $17.23 Implied vol 105.8% Delta -0.904 ≈90% ITM Gamma 0.039 Theta -0.016 Vega 0.009 Open interest 1 Model this put
0	—	138.7%	0.156	—		—	-0.95	96.2%	—	0
Call · $26 Last — Breakeven — Implied vol 138.7% Delta 0.156 ≈16% ITM Gamma 0.04 Theta -0.032 Vega 0.009 Open interest 0 Model this call Put · $26 In the money Last — Breakeven — Implied vol 96.2% Delta -0.95 ≈95% ITM Gamma 0.028 Theta -0.008 Vega 0.005 Open interest 0 Model this put
0	—	146.5%	0.149	—		—	-0.953	103.3%	—	0
Call · $27 Last — Breakeven — Implied vol 146.5% Delta 0.149 ≈15% ITM Gamma 0.037 Theta -0.032 Vega 0.009 Open interest 0 Model this call Put · $27 In the money Last — Breakeven — Implied vol 103.3% Delta -0.953 ≈95% ITM Gamma 0.025 Theta -0.008 Vega 0.005 Open interest 0 Model this put
0	—	154%	0.144	—		—	-0.902	136%	—	0
Call · $28 Last — Breakeven — Implied vol 154% Delta 0.144 ≈14% ITM Gamma 0.034 Theta -0.033 Vega 0.01 Open interest 0 Model this call Put · $28 In the money Last — Breakeven — Implied vol 136% Delta -0.902 ≈90% ITM Gamma 0.031 Theta -0.021 Vega 0.009 Open interest 0 Model this put
0	—	161.3%	0.139	—		—	-0.905	143.6%	—	0
Call · $29 Last — Breakeven — Implied vol 161.3% Delta 0.139 ≈14% ITM Gamma 0.032 Theta -0.034 Vega 0.01 Open interest 0 Model this call Put · $29 In the money Last — Breakeven — Implied vol 143.6% Delta -0.905 ≈91% ITM Gamma 0.029 Theta -0.021 Vega 0.009 Open interest 0 Model this put
0	—	168.3%	0.135	—		—	-0.908	150.3%	—	0
Call · $30 Last — Breakeven — Implied vol 168.3% Delta 0.135 ≈14% ITM Gamma 0.03 Theta -0.035 Vega 0.01 Open interest 0 Model this call Put · $30 In the money Last — Breakeven — Implied vol 150.3% Delta -0.908 ≈91% ITM Gamma 0.027 Theta -0.022 Vega 0.006 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1789972 CUSIP 230031106 13F (30d) 25 filings 25 filers Visit website Investor relations