CTMX · CytomX Therapeutics, Inc.

Track CTMX — free

$3.36 +0.01 (+0.30%) At close · Aug 14

Market Cap

$732.14M

217.90M

Options Chain

Underlying $3.36 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 32 contracts · mixed snapshot sessions · Dec 19, 2025–Aug 14, 2026; 10 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 5d Sep 18 33d Nov 20 96d Jan 15 152d Feb 19 187d Jan 21 523d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	1	502.2%	0.99	$2.60		$0.20	—	—	2	2
Call · $1 In the money Snapshot session May 29, 2026 Last $2.60 Breakeven $3.60 Implied vol 502.2% Delta 0.99 ≈99% ITM Gamma 0.013 Theta -0.005 Vega 0 Open interest 3 Model this call Put · $1 Snapshot session Dec 19, 2025 Last $0.20 Breakeven $0.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
1	1	—	—	$2.75		$0.27	-0.123	507.5%	4	54
Call · $2 In the money Snapshot session Mar 18, 2026 Last $2.75 Breakeven $4.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $2 Snapshot session Jun 18, 2026 Last $0.27 Breakeven $1.73 Implied vol 507.5% Delta -0.123 ≈12% ITM Gamma 0.097 Theta -0.039 Vega 0.001 Open interest 54 Model this put
868	1	100.6%	0.855	$0.38		$0.15	-0.275	214.4%	1	2.2k
Call · $3 In the money Snapshot session Aug 14, 2026 Last $0.38 Breakeven $3.38 Implied vol 100.6% Delta 0.855 ≈86% ITM Gamma 0.548 Theta -0.009 Vega 0.001 Open interest 868 Model this call Put · $3 Snapshot session Aug 6, 2026 Last $0.15 Breakeven $2.85 Implied vol 214.4% Delta -0.275 ≈27% ITM Gamma 0.378 Theta -0.027 Vega 0.001 Open interest 2.2k Model this put
Underlying $3.36
1.1k	32	154.8%	0.22	$0.05		$0.49	-0.911	97.2%	12	4.6k
Call · $4 Snapshot session Aug 6, 2026 Last $0.05 Breakeven $4.05 Implied vol 154.8% Delta 0.22 ≈22% ITM Gamma 0.463 Theta -0.018 Vega 0.001 Open interest 1.1k Model this call Put · $4 In the money Snapshot session Aug 13, 2026 Last $0.49 Breakeven $3.51 Implied vol 97.2% Delta -0.911 ≈91% ITM Gamma 0.41 Theta -0.006 Vega 0.001 Open interest 4.6k Model this put
713	1	264.7%	0.149	$0.05		$1.65	-0.898	227.2%	10	1
Call · $5 Snapshot session Aug 12, 2026 Last $0.05 Breakeven $5.05 Implied vol 264.7% Delta 0.149 ≈15% ITM Gamma 0.213 Theta -0.024 Vega 0.001 Open interest 713 Model this call Put · $5 In the money Snapshot session Jul 24, 2026 Last $1.65 Breakeven $3.35 Implied vol 227.2% Delta -0.898 ≈90% ITM Gamma 0.191 Theta -0.015 Vega 0.001 Open interest 1 Model this put
94	15	421.2%	0.193	$0.04		$1.38	—	—	2	1
Call · $6 Snapshot session Jul 23, 2026 Last $0.04 Breakeven $6.04 Implied vol 421.2% Delta 0.193 ≈19% ITM Gamma 0.159 Theta -0.045 Vega 0.001 Open interest 94 Model this call Put · $6 In the money Snapshot session Mar 17, 2026 Last $1.38 Breakeven $4.62 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
916	6	432.9%	0.134	$0.05		$2.72	-0.794	524.9%	3	0
Call · $7 Snapshot session Jul 27, 2026 Last $0.05 Breakeven $7.05 Implied vol 432.9% Delta 0.134 ≈13% ITM Gamma 0.12 Theta -0.036 Vega 0.001 Open interest 916 Model this call Put · $7 In the money Snapshot session Mar 18, 2026 Last $2.72 Breakeven $4.28 Implied vol 524.9% Delta -0.794 ≈79% ITM Gamma 0.132 Theta -0.057 Vega 0.001 Open interest 0 Model this put
7.5k	20	456.4%	0.102	$0.05		$4.20	-0.807	576.4%	1	1
Call · $8 Snapshot session Jun 26, 2026 Last $0.05 Breakeven $8.05 Implied vol 456.4% Delta 0.102 ≈10% ITM Gamma 0.094 Theta -0.031 Vega 0.001 Open interest 7.5k Model this call Put · $8 In the money Snapshot session May 22, 2026 Last $4.20 Breakeven $3.80 Implied vol 576.4% Delta -0.807 ≈81% ITM Gamma 0.114 Theta -0.06 Vega 0.001 Open interest 1 Model this put
68	14	534.7%	0.117	$0.07		—	—	—	—	0
Call · $9 Snapshot session Jul 6, 2026 Last $0.07 Breakeven $9.07 Implied vol 534.7% Delta 0.117 ≈12% ITM Gamma 0.089 Theta -0.04 Vega 0.001 Open interest 68 Model this call Put · $9 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
125	10	—	—	$0.05		—	-0.823	664.1%	—	0
Call · $10 Snapshot session Jun 1, 2026 Last $0.05 Breakeven $10.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 125 Model this call Put · $10 In the money Snapshot session Unknown Last — Breakeven — Implied vol 664.1% Delta -0.823 ≈82% ITM Gamma 0.094 Theta -0.065 Vega 0.001 Open interest 0 Model this put
1.8k	10	—	—	$0.20		—	—	—	—	0
Call · $11 Snapshot session May 8, 2026 Last $0.20 Breakeven $11.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1.8k Model this call Put · $11 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.833	737%	—	0
Call · $12 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $12 In the money Snapshot session Unknown Last — Breakeven — Implied vol 737% Delta -0.833 ≈83% ITM Gamma 0.081 Theta -0.07 Vega 0.001 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $13 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $13 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
4	3	—	—	$0.05		—	—	—	—	0
Call · $14 Snapshot session May 20, 2026 Last $0.05 Breakeven $14.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $14 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	2	—	—	$0.05		—	—	—	—	0
Call · $15 Snapshot session May 20, 2026 Last $0.05 Breakeven $15.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
9	1	—	—	$0.05		—	-0.844	844.8%	—	0
Call · $16 Snapshot session May 22, 2026 Last $0.05 Breakeven $16.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 9 Model this call Put · $16 In the money Snapshot session Unknown Last — Breakeven — Implied vol 844.8% Delta -0.844 ≈84% ITM Gamma 0.068 Theta -0.077 Vega 0.001 Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Dec 19, 2025–Aug 14, 2026; 10 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. 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.

Key facts CIK 1501989 CUSIP 23284F105 13F (30d) 182 filings 176 filers Visit website Investor relations