HNRG · Hallador Energy Co

Track HNRG — free

$16.18 +0.02 (+0.12%)

Market Cap

$761.84M

47.14M

Options Chain

Underlying $16.18 · today Options Calculator

Positioning

Aug 21, 2026 · 4 days to expiry · 60 contracts · mixed snapshot sessions · Feb 25, 2026–Aug 17, 2026; 9 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 4d Sep 18 32d Nov 20 95d Jan 15 151d Feb 19 186d Jan 21 522d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
592	10	—	—	$15.18		—	—	—	—	0
Call · $1 In the money Snapshot session Jul 15, 2026 Last $15.18 Breakeven $16.18 Implied vol — Delta — Gamma — Theta — Vega — Open interest 592 Model this call Put · $1 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
16	2	—	—	$13.01		—	—	—	—	0
Call · $2 In the money Snapshot session Aug 6, 2026 Last $13.01 Breakeven $15.01 Implied vol — Delta — Gamma — Theta — Vega — Open interest 16 Model this call Put · $2 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	—	—	$16.92		—	—	—	—	0
Call · $3 In the money Snapshot session May 28, 2026 Last $16.92 Breakeven $19.92 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $3 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	672.4%	0.991	—		—	—	—	—	0
Call · $4 In the money Snapshot session Unknown Last — Breakeven — Implied vol 672.4% Delta 0.991 ≈99% ITM Gamma 0.002 Theta -0.036 Vega 0 Open interest 0 Model this call Put · $4 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	2	0.1%	1	$9.95		—	—	—	—	0
Call · $5 In the money Snapshot session Aug 6, 2026 Last $9.95 Breakeven $14.95 Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta 0 Vega 0 Open interest 3 Model this call Put · $5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	0.1%	1	$13.94		—	—	—	—	0
Call · $6 In the money Snapshot session May 28, 2026 Last $13.94 Breakeven $19.94 Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 1 Model this call Put · $6 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
4	2	—	—	$9.66		—	—	—	—	0
Call · $7 In the money Snapshot session Jul 9, 2026 Last $9.66 Breakeven $16.66 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $7 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	0.1%	1	$6.52		$0.25	—	—	1	2
Call · $8 In the money Snapshot session Jul 30, 2026 Last $6.52 Breakeven $14.52 Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 1 Model this call Put · $8 Snapshot session Apr 9, 2026 Last $0.25 Breakeven $7.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
1	2	—	—	$8.52		$0.30	-0.082	512.6%	50	150
Call · $9 In the money Snapshot session Jun 30, 2026 Last $8.52 Breakeven $17.52 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $9 Snapshot session Apr 30, 2026 Last $0.30 Breakeven $8.70 Implied vol 512.6% Delta -0.082 ≈8% ITM Gamma 0.017 Theta -0.168 Vega 0.002 Open interest 150 Model this put
4	6	—	—	$6.10		$0.20	-0.096	438.6%	6	126
Call · $10 In the money Snapshot session Aug 10, 2026 Last $6.10 Breakeven $16.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $10 Snapshot session Jun 10, 2026 Last $0.20 Breakeven $9.80 Implied vol 438.6% Delta -0.096 ≈10% ITM Gamma 0.023 Theta -0.16 Vega 0.003 Open interest 126 Model this put
0	—	—	—	—		$0.05	-0.112	371.1%	30	45
Call · $11 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $11 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $10.95 Implied vol 371.1% Delta -0.112 ≈11% ITM Gamma 0.03 Theta -0.151 Vega 0.004 Open interest 45 Model this put
2	2	172%	0.965	$5.79		$0.20	-0.132	309.9%	1	13
Call · $12 In the money Snapshot session Mar 17, 2026 Last $5.79 Breakeven $17.79 Implied vol 172% Delta 0.965 ≈97% ITM Gamma 0.026 Theta -0.029 Vega 0.002 Open interest 2 Model this call Put · $12 Snapshot session Jul 20, 2026 Last $0.20 Breakeven $11.80 Implied vol 309.9% Delta -0.132 ≈13% ITM Gamma 0.04 Theta -0.141 Vega 0.004 Open interest 13 Model this put
1.4k	4	0.1%	1	$1.90		$0.05	-0.084	170.3%	1	144
Call · $13 In the money Snapshot session Jul 31, 2026 Last $1.90 Breakeven $14.90 Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 1.4k Model this call Put · $13 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $12.95 Implied vol 170.3% Delta -0.084 ≈8% ITM Gamma 0.052 Theta -0.056 Vega 0.003 Open interest 144 Model this put
150	3	159.5%	0.846	$2.07		$0.14	-0.13	143.1%	1	3.3k
Call · $14 In the money Snapshot session Aug 14, 2026 Last $2.07 Breakeven $16.07 Implied vol 159.5% Delta 0.846 ≈85% ITM Gamma 0.086 Theta -0.082 Vega 0.004 Open interest 150 Model this call Put · $14 Snapshot session Aug 13, 2026 Last $0.14 Breakeven $13.86 Implied vol 143.1% Delta -0.13 ≈13% ITM Gamma 0.086 Theta -0.065 Vega 0.004 Open interest 3.3k Model this put
121	10	78.9%	0.87	$1.26		$0.33	-0.264	153.8%	1	1.7k
Call · $15 In the money Snapshot session Aug 17, 2026 Last $1.26 Breakeven $16.26 Implied vol 78.9% Delta 0.87 ≈87% ITM Gamma 0.157 Theta -0.037 Vega 0.004 Open interest 121 Model this call Put · $15 Snapshot session Aug 12, 2026 Last $0.33 Breakeven $14.67 Implied vol 153.8% Delta -0.264 ≈26% ITM Gamma 0.123 Theta -0.107 Vega 0.006 Open interest 1.7k Model this put
961	752	56.7%	0.673	$0.57		$0.49	-0.372	84.3%	23	280
Call · $16 In the money Snapshot session Aug 14, 2026 Last $0.57 Breakeven $16.57 Implied vol 56.7% Delta 0.673 ≈67% ITM Gamma 0.372 Theta -0.045 Vega 0.006 Open interest 961 Model this call Put · $16 Snapshot session Aug 14, 2026 Last $0.49 Breakeven $15.51 Implied vol 84.3% Delta -0.372 ≈37% ITM Gamma 0.261 Theta -0.068 Vega 0.007 Open interest 280 Model this put
Underlying $16.18
2.8k	1	93.3%	0.377	$0.20		$1.73	-0.629	90.3%	4	113
Call · $17 Snapshot session Aug 17, 2026 Last $0.20 Breakeven $17.20 Implied vol 93.3% Delta 0.377 ≈38% ITM Gamma 0.239 Theta -0.077 Vega 0.007 Open interest 2.8k Model this call Put · $17 In the money Snapshot session Aug 10, 2026 Last $1.73 Breakeven $15.27 Implied vol 90.3% Delta -0.629 ≈63% ITM Gamma 0.246 Theta -0.073 Vega 0.006 Open interest 113 Model this put
1.2k	25	101.1%	0.209	$0.15		$2.45	-0.64	189.8%	10	18
Call · $18 Snapshot session Aug 11, 2026 Last $0.15 Breakeven $18.15 Implied vol 101.1% Delta 0.209 ≈21% ITM Gamma 0.165 Theta -0.062 Vega 0.005 Open interest 1.2k Model this call Put · $18 In the money Snapshot session Aug 10, 2026 Last $2.45 Breakeven $15.55 Implied vol 189.8% Delta -0.64 ≈64% ITM Gamma 0.115 Theta -0.151 Vega 0.006 Open interest 18 Model this put
3k	2	160%	0.218	$0.02		$4.32	-0.789	156.3%	1	38
Call · $19 Snapshot session Aug 17, 2026 Last $0.02 Breakeven $19.02 Implied vol 160% Delta 0.218 ≈22% ITM Gamma 0.107 Theta -0.101 Vega 0.005 Open interest 3k Model this call Put · $19 In the money Snapshot session Jul 27, 2026 Last $4.32 Breakeven $14.68 Implied vol 156.3% Delta -0.789 ≈79% ITM Gamma 0.107 Theta -0.095 Vega 0.005 Open interest 38 Model this put
698	10	196.4%	0.199	$0.10		$5.08	-0.815	187.8%	2	113
Call · $20 Snapshot session Aug 3, 2026 Last $0.10 Breakeven $20.10 Implied vol 196.4% Delta 0.199 ≈20% ITM Gamma 0.082 Theta -0.117 Vega 0.005 Open interest 698 Model this call Put · $20 In the money Snapshot session Aug 4, 2026 Last $5.08 Breakeven $14.92 Implied vol 187.8% Delta -0.815 ≈82% ITM Gamma 0.082 Theta -0.105 Vega 0.005 Open interest 113 Model this put
99	10	250.4%	0.213	$0.30		$6.25	-0.791	246.9%	1	9
Call · $21 Snapshot session Jul 21, 2026 Last $0.30 Breakeven $21.30 Implied vol 250.4% Delta 0.213 ≈21% ITM Gamma 0.067 Theta -0.155 Vega 0.005 Open interest 99 Model this call Put · $21 In the money Snapshot session Aug 4, 2026 Last $6.25 Breakeven $14.75 Implied vol 246.9% Delta -0.791 ≈79% ITM Gamma 0.067 Theta -0.149 Vega 0.005 Open interest 9 Model this put
73	12	213.4%	0.118	$0.40		$7.16	-0.832	256%	1	1
Call · $22 Snapshot session Jul 14, 2026 Last $0.40 Breakeven $22.40 Implied vol 213.4% Delta 0.118 ≈12% ITM Gamma 0.053 Theta -0.09 Vega 0.004 Open interest 73 Model this call Put · $22 In the money Snapshot session Aug 4, 2026 Last $7.16 Breakeven $14.84 Implied vol 256% Delta -0.832 ≈83% ITM Gamma 0.057 Theta -0.137 Vega 0.005 Open interest 1 Model this put
56	40	236%	0.11	$0.15		$8.05	-0.83	292.6%	1	1
Call · $23 Snapshot session Jul 23, 2026 Last $0.15 Breakeven $23.15 Implied vol 236% Delta 0.11 ≈11% ITM Gamma 0.046 Theta -0.094 Vega 0.004 Open interest 56 Model this call Put · $23 In the money Snapshot session Aug 4, 2026 Last $8.05 Breakeven $14.95 Implied vol 292.6% Delta -0.83 ≈83% ITM Gamma 0.051 Theta -0.158 Vega 0.005 Open interest 1 Model this put
23	1	318.9%	0.166	$0.30		$9.30	-0.839	314%	2	2
Call · $24 Snapshot session Jun 29, 2026 Last $0.30 Breakeven $24.30 Implied vol 318.9% Delta 0.166 ≈17% ITM Gamma 0.046 Theta -0.171 Vega 0.004 Open interest 23 Model this call Put · $24 In the money Snapshot session Aug 5, 2026 Last $9.30 Breakeven $14.70 Implied vol 314% Delta -0.839 ≈84% ITM Gamma 0.045 Theta -0.163 Vega 0.004 Open interest 2 Model this put
37	5	345.2%	0.164	$0.28		$10.05	-0.858	320.5%	2	1
Call · $25 Snapshot session Jun 30, 2026 Last $0.28 Breakeven $25.28 Implied vol 345.2% Delta 0.164 ≈16% ITM Gamma 0.042 Theta -0.183 Vega 0.004 Open interest 37 Model this call Put · $25 In the money Snapshot session Aug 4, 2026 Last $10.05 Breakeven $14.95 Implied vol 320.5% Delta -0.858 ≈86% ITM Gamma 0.041 Theta -0.151 Vega 0.004 Open interest 1 Model this put
1	1	350.9%	0.146	$0.15		$11.75	-0.864	339.9%	4	0
Call · $26 Snapshot session Aug 6, 2026 Last $0.15 Breakeven $26.15 Implied vol 350.9% Delta 0.146 ≈15% ITM Gamma 0.038 Theta -0.171 Vega 0.004 Open interest 1 Model this call Put · $26 In the money Snapshot session Jul 31, 2026 Last $11.75 Breakeven $14.25 Implied vol 339.9% Delta -0.864 ≈86% ITM Gamma 0.037 Theta -0.156 Vega 0.004 Open interest 0 Model this put
1	1	395.2%	0.163	$2.05		$11.80	-0.869	358.5%	6	2
Call · $27 Snapshot session Feb 25, 2026 Last $2.05 Breakeven $29.05 Implied vol 395.2% Delta 0.163 ≈16% ITM Gamma 0.036 Theta -0.208 Vega 0.004 Open interest 1 Model this call Put · $27 In the money Snapshot session Aug 4, 2026 Last $11.80 Breakeven $15.20 Implied vol 358.5% Delta -0.869 ≈87% ITM Gamma 0.034 Theta -0.16 Vega 0.004 Open interest 2 Model this put
1	1	412.5%	0.157	$0.05		$13.30	-0.899	351.1%	2	1
Call · $28 Snapshot session Jul 30, 2026 Last $0.05 Breakeven $28.05 Implied vol 412.5% Delta 0.157 ≈16% ITM Gamma 0.034 Theta -0.212 Vega 0.004 Open interest 1 Model this call Put · $28 In the money Snapshot session Aug 5, 2026 Last $13.30 Breakeven $14.70 Implied vol 351.1% Delta -0.899 ≈90% ITM Gamma 0.029 Theta -0.131 Vega 0.004 Open interest 1 Model this put
23	1	327.2%	0.057	$0.40		$15.30	-0.905	383.5%	2	3
Call · $30 Snapshot session Jun 4, 2026 Last $0.40 Breakeven $30.40 Implied vol 327.2% Delta 0.057 ≈6% ITM Gamma 0.02 Theta -0.079 Vega 0.002 Open interest 23 Model this call Put · $30 In the money Snapshot session Aug 5, 2026 Last $15.30 Breakeven $14.70 Implied vol 383.5% Delta -0.905 ≈90% ITM Gamma 0.026 Theta -0.137 Vega 0.002 Open interest 3 Model this put
6	2	502.5%	0.12	$0.06		$20.05	-0.915	446.7%	2	0
Call · $35 Snapshot session Jul 27, 2026 Last $0.06 Breakeven $35.06 Implied vol 502.5% Delta 0.12 ≈12% ITM Gamma 0.023 Theta -0.215 Vega 0.004 Open interest 6 Model this call Put · $35 In the money Snapshot session Aug 4, 2026 Last $20.05 Breakeven $14.95 Implied vol 446.7% Delta -0.915 ≈92% ITM Gamma 0.02 Theta -0.145 Vega 0.003 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 25, 2026–Aug 17, 2026; 9 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. The 25 strikes around the money are shown by default — switch to "All 30" for the wings.

Key facts CIK 788965 CUSIP 40609P105 13F (30d) 177 filings 172 filers Visit website Investor relations