FFIN · First Financial Bankshares Inc

Track FFIN — free

$34.12 -0.51 (-1.47%) At close · Aug 19

Market Cap

$4.88B

143.33M

Options Chain

Underlying $34.12 · at close Aug 19, 2026 Options Calculator

Positioning

Aug 21, 2026 · 1 days to expiry · 18 contracts · mixed snapshot sessions · Jun 30, 2026–Aug 18, 2026; 15 unknown

Put / call OI

—

dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 1d Sep 18 29d Oct 16 57d Jan 15 148d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	2	625%	0.963	$17.28		—	—	—	—	0
Call · $17.5 In the money Snapshot session Aug 18, 2026 Last $17.28 Breakeven $34.78 Implied vol 625% Delta 0.963 ≈96% ITM Gamma 0.006 Theta -0.346 Vega 0.002 Open interest 3 Model this call Put · $17.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	519.1%	0.956	—		—	—	—	—	0
Call · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol 519.1% Delta 0.956 ≈96% ITM Gamma 0.008 Theta -0.338 Vega 0.002 Open interest 0 Model this call Put · $20 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	422.5%	0.946	—		—	—	—	—	0
Call · $22.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 422.5% Delta 0.946 ≈95% ITM Gamma 0.011 Theta -0.323 Vega 0.003 Open interest 0 Model this call Put · $22.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	373.3%	0.911	—		—	-0.092	380.5%	—	0
Call · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol 373.3% Delta 0.911 ≈91% ITM Gamma 0.019 Theta -0.417 Vega 0.003 Open interest 0 Model this call Put · $25 Snapshot session Unknown Last — Breakeven — Implied vol 380.5% Delta -0.092 ≈9% ITM Gamma 0.019 Theta -0.437 Vega 0.003 Open interest 0 Model this put
10	10	204.9%	0.834	$4.99		—	-0.161	200.5%	—	0
Call · $30 In the money Snapshot session Jul 13, 2026 Last $4.99 Breakeven $34.99 Implied vol 204.9% Delta 0.834 ≈83% ITM Gamma 0.053 Theta -0.353 Vega 0.006 Open interest 10 Model this call Put · $30 Snapshot session Unknown Last — Breakeven — Implied vol 200.5% Delta -0.161 ≈16% ITM Gamma 0.053 Theta -0.339 Vega 0.006 Open interest 0 Model this put
Underlying $34.12
0	—	101%	0.348	—		—	—	—	—	0
Call · $35 Snapshot session Unknown Last — Breakeven — Implied vol 101% Delta 0.348 ≈35% ITM Gamma 0.161 Theta -0.261 Vega 0.008 Open interest 0 Model this call Put · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
9	3	228.2%	0.162	$0.25		—	—	—	—	0
Call · $40 Snapshot session Jun 30, 2026 Last $0.25 Breakeven $40.25 Implied vol 228.2% Delta 0.162 ≈16% ITM Gamma 0.047 Theta -0.391 Vega 0.007 Open interest 9 Model this call Put · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $45 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $45 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $50 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $50 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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 · Jun 30, 2026–Aug 18, 2026; 15 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 36029 CUSIP 32020R109 13F (30d) 318 filings 309 filers Visit website