FISI · Financial Institutions Inc · Options Chain

Track FISI — free

$40.92 -0.17 (-0.41%) At close · Sep 11

Russell 2000 member Rebalance outlook locked

Market Cap

$806.38M

19.71M

Options Chain

Underlying $40.92 · at close Sep 11, 2026 Options Calculator

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Positioning

Sep 18, 2026 · 5 days to expiry · 18 contracts · mixed daily-bar sessions · Feb 26, 2026–Sep 2, 2026; 11 unknown

Put / call OI

14.36

Put-heavy positioning

Open interest

338

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$35.00

$5.92 below spot

ATM implied vol

90.5%

market's expected move

Open interest by strike

Calls Puts

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 5d Oct 16 33d Dec 18 96d Mar 19 187d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$22.40	$26.00	—		—	$0.00	$4.80	—	—	—	—
Call · $17.5 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:56:59.751 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $17.5 Daily-bar session Unknown Quote as of 2026-09-11 19:59:43.953 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$19.70	$23.50	—		—	$0.00	$4.50	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:57:42.782 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-11 19:59:43.951 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$17.20	$21.00	—		—	$0.00	$0.20	—	—	—	—
Call · $22.5 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:12.628 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $22.5 Daily-bar session Unknown Quote as of 2026-09-11 16:48:07.113 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$14.70	$18.50	—		$0.05	$0.00	$0.10	—	—	5	240
Call · $25 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:56:49.595 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $25 Daily-bar session Sep 2, 2026 Quote as of 2026-09-11 19:59:31.385 UTC Last $0.05 Breakeven $24.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 240 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$9.90	$13.50	—		$2.41	$0.00	$4.80	—	—	10	60
Call · $30 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:48.541 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $30 Daily-bar session Feb 26, 2026 Quote as of 2026-09-11 19:59:43.953 UTC Last $2.41 Breakeven $27.59 Implied vol — Delta — Gamma — Theta — Vega — Open interest 60 OI effective date Sep 10, 2026 Model this put
15	20	—	—	$4.50	$8.50	$5.72		$0.15	$0.00	$4.80	—	—	1	13
Call · $35 In the money Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 19:55:12.628 UTC Last $5.72 Breakeven $40.72 Implied vol — Delta — Gamma — Theta — Vega — Open interest 15 OI effective date Sep 10, 2026 Model this call Put · $35 Daily-bar session Aug 10, 2026 Quote as of 2026-09-11 19:59:43.953 UTC Last $0.15 Breakeven $34.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 13 OI effective date Sep 10, 2026 Model this put
5	2	104.3%	0.599	$0.05	$4.90	$2.60		$0.60	$0.10	$1.95	-0.381	76.6%	3	3
Call · $40 In the money Daily-bar session Jul 28, 2026 Quote as of 2026-09-11 19:59:56.065 UTC Last $2.60 Breakeven $42.60 Implied vol 104.3% Delta 0.599 ≈60% ITM Gamma 0.077 Theta -0.195 Vega 0.019 Open interest 5 OI effective date Sep 10, 2026 Model this call Put · $40 Daily-bar session Aug 6, 2026 Quote as of 2026-09-11 19:59:43.953 UTC Last $0.60 Breakeven $39.40 Implied vol 76.6% Delta -0.381 ≈38% ITM Gamma 0.104 Theta -0.138 Vega 0.018 Open interest 3 OI effective date Sep 10, 2026 Model this put
Underlying $40.92
1	1	—	—	$0.00	$4.80	$0.24		—	$2.00	$5.60	—	—	—	—
Call · $45 Daily-bar session Aug 24, 2026 Quote as of 2026-09-11 19:59:43.953 UTC Last $0.24 Breakeven $45.24 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $45 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:15.808 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	—	—	—	$0.00	$4.80	—		—	$7.00	$10.60	—	—	—	—
Call · $50 Daily-bar session Unknown Quote as of 2026-09-11 19:59:43.953 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $50 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:17.321 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Feb 26, 2026–Sep 2, 2026; 11 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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 862831 CUSIP 317585404 13F (30d) 53 filings 53 filers Visit website