CFFN · Capitol Federal Financial, Inc.

Track CFFN — free

$8.49 -0.15 (-1.74%) At close · Aug 19

Market Cap

$1.09B

125.70M

Options Chain

Underlying $8.49 · at close Aug 19, 2026 Options Calculator

Positioning

Aug 21, 2026 · 1 days to expiry · 12 contracts · mixed snapshot sessions · Feb 11, 2026–Aug 19, 2026; 4 unknown

Put / call OI

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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 Nov 20 92d Feb 19 183d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	1	1493.8%	0.955	$6.10		—	—	—	—	0
Call · $2.5 In the money Snapshot session Aug 19, 2026 Last $6.10 Breakeven $8.60 Implied vol 1493.8% Delta 0.955 ≈96% ITM Gamma 0.011 Theta -0.237 Vega 0 Open interest 3 Model this call Put · $2.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$4.05		—	—	—	—	0
Call · $5 In the money Snapshot session Aug 5, 2026 Last $4.05 Breakeven $9.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	178.6%	0.854	$1.16		$0.60	-0.272	369.9%	1	1
Call · $7.5 In the money Snapshot session Jul 17, 2026 Last $1.16 Breakeven $8.66 Implied vol 178.6% Delta 0.854 ≈85% ITM Gamma 0.217 Theta -0.068 Vega 0.001 Open interest 0 Model this call Put · $7.5 Snapshot session Feb 11, 2026 Last $0.60 Breakeven $6.90 Implied vol 369.9% Delta -0.272 ≈27% ITM Gamma 0.152 Theta -0.206 Vega 0.002 Open interest 1 Model this put
Underlying $8.49
48	32	—	—	$0.05		$1.17	-0.778	271%	2	0
Call · $10 Snapshot session Jul 13, 2026 Last $0.05 Breakeven $10.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 48 Model this call Put · $10 In the money Snapshot session Aug 12, 2026 Last $1.17 Breakeven $8.83 Implied vol 271% Delta -0.778 ≈78% ITM Gamma 0.186 Theta -0.135 Vega 0.002 Open interest 0 Model this put
1	2	—	—	$0.05		—	—	—	—	0
Call · $12.5 Snapshot session Jul 31, 2026 Last $0.05 Breakeven $12.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $12.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
25	4	—	—	$0.05		—	—	—	—	0
Call · $15 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $15.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 25 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

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 · Feb 11, 2026–Aug 19, 2026; 4 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 1490906 CUSIP 14057J101 13F (30d) 223 filings 218 filers Visit website Investor relations