JMSB · John Marshall Bancorp, Inc.

Track JMSB — free

$23.25 +0.23 (+1.00%) At close · Aug 21

Market Cap

$326.27M

14.11M

Options Chain

Underlying $23.25 · at close Aug 21, 2026 Options Calculator

Positioning

Sep 18, 2026 · 27 days to expiry · 24 contracts · mixed snapshot sessions · Aug 4, 2026–Aug 19, 2026; 21 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

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 27d Oct 16 55d Dec 18 118d Mar 19 209d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	1	482.3%	0.991	$21.60		—	—	—	—	0
Call · $2.5 In the money Snapshot session Aug 4, 2026 Last $21.60 Breakeven $24.10 Implied vol 482.3% Delta 0.991 ≈99% ITM Gamma 0.001 Theta -0.014 Vega 0.002 Open interest 0 Model this call Put · $2.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	345.9%	0.982	—		—	—	—	—	0
Call · $5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 345.9% Delta 0.982 ≈98% ITM Gamma 0.002 Theta -0.017 Vega 0.003 Open interest 0 Model this call Put · $5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	271.7%	0.972	—		—	—	—	—	0
Call · $7.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 271.7% Delta 0.972 ≈97% ITM Gamma 0.004 Theta -0.021 Vega 0.003 Open interest 0 Model this call Put · $7.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	1	196.4%	0.968	$14.00		—	—	—	—	0
Call · $10 In the money Snapshot session Aug 4, 2026 Last $14.00 Breakeven $24.00 Implied vol 196.4% Delta 0.968 ≈97% ITM Gamma 0.006 Theta -0.017 Vega 0.004 Open interest 0 Model this call Put · $10 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	111.2%	0.986	—		—	—	—	—	0
Call · $12.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 111.2% Delta 0.986 ≈99% ITM Gamma 0.005 Theta -0.005 Vega 0.002 Open interest 0 Model this call Put · $12.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	0.1%	0.999	—		—	—	—	—	0
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 0 Model this call Put · $15 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	72.2%	0.941	—		—	-0.118	100.8%	—	0
Call · $17.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 72.2% Delta 0.941 ≈94% ITM Gamma 0.026 Theta -0.011 Vega 0.01 Open interest 0 Model this call Put · $17.5 Snapshot session Unknown Last — Breakeven — Implied vol 100.8% Delta -0.118 ≈12% ITM Gamma 0.031 Theta -0.023 Vega 0.014 Open interest 0 Model this put
0	—	58.5%	0.849	—		—	-0.173	65.5%	—	0
Call · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol 58.5% Delta 0.849 ≈85% ITM Gamma 0.063 Theta -0.017 Vega 0.015 Open interest 0 Model this call Put · $20 Snapshot session Unknown Last — Breakeven — Implied vol 65.5% Delta -0.173 ≈17% ITM Gamma 0.062 Theta -0.019 Vega 0.015 Open interest 0 Model this put
0	—	21.6%	0.73	—		$0.93	-0.34	34.8%	6	6
Call · $22.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 21.6% Delta 0.73 ≈73% ITM Gamma 0.243 Theta -0.009 Vega 0.021 Open interest 0 Model this call Put · $22.5 Snapshot session Aug 19, 2026 Last $0.93 Breakeven $21.57 Implied vol 34.8% Delta -0.34 ≈34% ITM Gamma 0.17 Theta -0.015 Vega 0.024 Open interest 6 Model this put
Underlying $23.25
0	—	45%	0.303	—		—	-0.658	54.4%	—	0
Call · $25 Snapshot session Unknown Last — Breakeven — Implied vol 45% Delta 0.303 ≈30% ITM Gamma 0.123 Theta -0.019 Vega 0.023 Open interest 0 Model this call Put · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol 54.4% Delta -0.658 ≈66% ITM Gamma 0.108 Theta -0.023 Vega 0.023 Open interest 0 Model this put
0	—	—	—	—		—	-0.905	67.7%	—	0
Call · $30 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 67.7% Delta -0.905 ≈91% ITM Gamma 0.042 Theta -0.012 Vega 0.012 Open interest 0 Model this put
0	—	—	—	—		—	-0.913	102.8%	—	0
Call · $35 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol 102.8% Delta -0.913 ≈91% ITM Gamma 0.026 Theta -0.018 Vega 0.012 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 · Aug 4, 2026–Aug 19, 2026; 21 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 1710482 CUSIP 47805L101 13F (30d) 85 filings 85 filers Visit website Investor relations