NFG · National Fuel Gas Co

Track NFG — free

$81.92 +0.41 (+0.50%) At close · Aug 14

Market Cap

$7.79B

95.05M

Options Chain

Underlying $81.92 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 32 contracts · mixed snapshot sessions · Jul 10, 2026–Aug 14, 2026; 22 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 Oct 16 61d Jan 15 152d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $40 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $45 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $45 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $50 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $50 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $55 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.053	164.1%	—	0
Call · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 Snapshot session Unknown Last — Breakeven — Implied vol 164.1% Delta -0.053 ≈5% ITM Gamma 0.006 Theta -0.159 Vega 0.009 Open interest 0 Model this put
0	—	—	—	—		—	-0.066	128.5%	—	0
Call · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 Snapshot session Unknown Last — Breakeven — Implied vol 128.5% Delta -0.066 ≈7% ITM Gamma 0.01 Theta -0.146 Vega 0.016 Open interest 0 Model this put
0	—	—	—	—		$0.42	-0.093	97.6%	11	22
Call · $70 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $70 Snapshot session Jul 20, 2026 Last $0.42 Breakeven $69.58 Implied vol 97.6% Delta -0.093 ≈9% ITM Gamma 0.016 Theta -0.142 Vega 0.017 Open interest 22 Model this put
300	299	—	—	$8.20		$0.30	-0.08	50.5%	5	55
Call · $75 In the money Snapshot session Jul 17, 2026 Last $8.20 Breakeven $83.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 300 Model this call Put · $75 Snapshot session Aug 7, 2026 Last $0.30 Breakeven $74.70 Implied vol 50.5% Delta -0.08 ≈8% ITM Gamma 0.028 Theta -0.066 Vega 0.018 Open interest 55 Model this put
469	5	27.4%	0.759	$2.35		$0.35	-0.237	26.9%	3	2k
Call · $80 In the money Snapshot session Aug 12, 2026 Last $2.35 Breakeven $82.35 Implied vol 27.4% Delta 0.759 ≈76% ITM Gamma 0.11 Theta -0.077 Vega 0.036 Open interest 469 Model this call Put · $80 Snapshot session Aug 14, 2026 Last $0.35 Breakeven $79.65 Implied vol 26.9% Delta -0.237 ≈24% ITM Gamma 0.111 Theta -0.073 Vega 0.036 Open interest 2k Model this put
Underlying $81.92
2k	22	28.5%	0.16	$0.25		$3.02	-0.839	28.7%	5	8
Call · $85 Snapshot session Aug 14, 2026 Last $0.25 Breakeven $85.25 Implied vol 28.5% Delta 0.16 ≈16% ITM Gamma 0.082 Theta -0.061 Vega 0.028 Open interest 2k Model this call Put · $85 In the money Snapshot session Aug 3, 2026 Last $3.02 Breakeven $81.98 Implied vol 28.7% Delta -0.839 ≈84% ITM Gamma 0.082 Theta -0.06 Vega 0.028 Open interest 8 Model this put
83	1	44.3%	0.051	$0.17		—	-0.898	56.2%	—	0
Call · $90 Snapshot session Aug 10, 2026 Last $0.17 Breakeven $90.17 Implied vol 44.3% Delta 0.051 ≈5% ITM Gamma 0.023 Theta -0.041 Vega 0.011 Open interest 83 Model this call Put · $90 In the money Snapshot session Unknown Last — Breakeven — Implied vol 56.2% Delta -0.898 ≈90% ITM Gamma 0.03 Theta -0.086 Vega 0.019 Open interest 0 Model this put
0	—	73.2%	0.061	—		—	-0.932	76.1%	—	0
Call · $95 Snapshot session Unknown Last — Breakeven — Implied vol 73.2% Delta 0.061 ≈6% ITM Gamma 0.016 Theta -0.078 Vega 0.012 Open interest 0 Model this call Put · $95 In the money Snapshot session Unknown Last — Breakeven — Implied vol 76.1% Delta -0.932 ≈93% ITM Gamma 0.017 Theta -0.086 Vega 0.012 Open interest 0 Model this put
0	—	109.2%	0.085	—		—	-0.936	99.3%	—	0
Call · $100 Snapshot session Unknown Last — Breakeven — Implied vol 109.2% Delta 0.085 ≈8% ITM Gamma 0.014 Theta -0.15 Vega 0.02 Open interest 0 Model this call Put · $100 In the money Snapshot session Unknown Last — Breakeven — Implied vol 99.3% Delta -0.936 ≈94% ITM Gamma 0.012 Theta -0.107 Vega 0.012 Open interest 0 Model this put
1	1	—	—	$0.05		—	-0.978	94.9%	—	0
Call · $105 Snapshot session Jul 20, 2026 Last $0.05 Breakeven $105.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $105 In the money Snapshot session Unknown Last — Breakeven — Implied vol 94.9% Delta -0.978 ≈98% ITM Gamma 0.005 Theta -0.041 Vega 0.006 Open interest 0 Model this put
3	3	124.5%	0.035	$0.06		—	-0.98	110%	—	0
Call · $110 Snapshot session Jul 10, 2026 Last $0.06 Breakeven $110.06 Implied vol 124.5% Delta 0.035 ≈4% ITM Gamma 0.006 Theta -0.086 Vega 0.006 Open interest 3 Model this call Put · $110 In the money Snapshot session Unknown Last — Breakeven — Implied vol 110% Delta -0.98 ≈98% ITM Gamma 0.004 Theta -0.043 Vega 0.006 Open interest 0 Model this put
0	—	—	—	—		—	-0.982	124.4%	—	0
Call · $115 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $115 In the money Snapshot session Unknown Last — Breakeven — Implied vol 124.4% Delta -0.982 ≈98% ITM Gamma 0.004 Theta -0.045 Vega 0.006 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 · Jul 10, 2026–Aug 14, 2026; 22 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 70145 CUSIP 636180101 13F (30d) 576 filings 572 filers Visit website Investor relations