UNG · United States Natural Gas Fund, LP

Track UNG — free

$10.31 -0.12 (-1.15%)

Market Cap

$494.95M

47.55M

Options Chain

Underlying $10.31 · today Options Calculator

Positioning

Aug 28, 2026 · expires today · 56 contracts · mixed snapshot sessions · Jul 13, 2026–Aug 27, 2026; 16 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 28 0d Sep 2 5d Sep 4 7d Sep 9 12d Sep 11 14d Sep 18 21d Sep 25 28d Oct 2 35d Oct 9 42d Oct 16 49d Jan 15 140d Apr 16 231d Jan 21 511d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
19	20	0%	1	$6.43		—	—	—	—	0
Call · $4 In the money Snapshot session Aug 27, 2026 Last $6.43 Breakeven $10.43 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta 0 Vega 0 Open interest 19 Model this call Put · $4 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
26	35	1647.6%	0.937	$5.48		—	—	—	—	0
Call · $5 In the money Snapshot session Aug 27, 2026 Last $5.48 Breakeven $10.48 Implied vol 1647.6% Delta 0.937 ≈94% ITM Gamma 0.021 Theta -0.82 Vega 0 Open interest 26 Model this call Put · $5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
27	28	1579.3%	0.921	$5.05		—	—	—	—	0
Call · $5.5 In the money Snapshot session Aug 27, 2026 Last $5.05 Breakeven $10.55 Implied vol 1579.3% Delta 0.921 ≈92% ITM Gamma 0.026 Theta -0.95 Vega 0 Open interest 27 Model this call Put · $5.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
13	18	1305.2%	0.92	$4.57		—	—	—	—	0
Call · $6 In the money Snapshot session Aug 27, 2026 Last $4.57 Breakeven $10.57 Implied vol 1305.2% Delta 0.92 ≈92% ITM Gamma 0.032 Theta -0.789 Vega 0 Open interest 13 Model this call Put · $6 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
16	18	1106.4%	0.915	$3.90		—	—	—	—	0
Call · $6.5 In the money Snapshot session Aug 27, 2026 Last $3.90 Breakeven $10.40 Implied vol 1106.4% Delta 0.915 ≈91% ITM Gamma 0.04 Theta -0.698 Vega 0 Open interest 16 Model this call Put · $6.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
11	10	875.4%	0.918	$3.60		—	—	—	—	0
Call · $7 In the money Snapshot session Aug 27, 2026 Last $3.60 Breakeven $10.60 Implied vol 875.4% Delta 0.918 ≈92% ITM Gamma 0.048 Theta -0.533 Vega 0.001 Open interest 11 Model this call Put · $7 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
6	1	896.4%	0.875	$3.04		—	—	—	—	0
Call · $7.5 In the money Snapshot session Aug 27, 2026 Last $3.04 Breakeven $10.54 Implied vol 896.4% Delta 0.875 ≈87% ITM Gamma 0.064 Theta -0.744 Vega 0.001 Open interest 6 Model this call Put · $7.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
15	4	659.3%	0.883	$2.59		—	-0.114	652.2%	—	0
Call · $8 In the money Snapshot session Aug 27, 2026 Last $2.59 Breakeven $10.59 Implied vol 659.3% Delta 0.883 ≈88% ITM Gamma 0.084 Theta -0.525 Vega 0.001 Open interest 15 Model this call Put · $8 Snapshot session Unknown Last — Breakeven — Implied vol 652.2% Delta -0.114 ≈11% ITM Gamma 0.084 Theta -0.512 Vega 0.001 Open interest 0 Model this put
3	2	698.2%	0.813	$2.03		$0.02	-0.048	330.5%	1	23
Call · $8.5 In the money Snapshot session Aug 27, 2026 Last $2.03 Breakeven $10.53 Implied vol 698.2% Delta 0.813 ≈81% ITM Gamma 0.109 Theta -0.765 Vega 0.001 Open interest 3 Model this call Put · $8.5 Snapshot session Aug 20, 2026 Last $0.02 Breakeven $8.48 Implied vol 330.5% Delta -0.048 ≈5% ITM Gamma 0.084 Theta -0.131 Vega 0 Open interest 23 Model this put
197	33	546.6%	0.78	$1.34		$0.07	-0.062	249.8%	6	432
Call · $9 In the money Snapshot session Aug 27, 2026 Last $1.34 Breakeven $10.34 Implied vol 546.6% Delta 0.78 ≈78% ITM Gamma 0.153 Theta -0.656 Vega 0.001 Open interest 197 Model this call Put · $9 Snapshot session Aug 26, 2026 Last $0.07 Breakeven $8.93 Implied vol 249.8% Delta -0.062 ≈6% ITM Gamma 0.138 Theta -0.124 Vega 0 Open interest 432 Model this put
283	103	405.9%	0.724	$0.98		$0.01	-0.064	145.3%	1	1.4k
Call · $9.5 In the money Snapshot session Aug 27, 2026 Last $0.98 Breakeven $10.48 Implied vol 405.9% Delta 0.724 ≈72% ITM Gamma 0.23 Theta -0.546 Vega 0.001 Open interest 283 Model this call Put · $9.5 Snapshot session Aug 26, 2026 Last $0.01 Breakeven $9.49 Implied vol 145.3% Delta -0.064 ≈6% ITM Gamma 0.245 Theta -0.074 Vega 0 Open interest 1.4k Model this put
2k	447	204.7%	0.643	$0.49		$0.01	-0.132	61.8%	427	2.5k
Call · $10 In the money Snapshot session Aug 27, 2026 Last $0.49 Breakeven $10.49 Implied vol 204.7% Delta 0.643 ≈64% ITM Gamma 0.515 Theta -0.311 Vega 0.001 Open interest 2k Model this call Put · $10 Snapshot session Aug 27, 2026 Last $0.01 Breakeven $9.99 Implied vol 61.8% Delta -0.132 ≈13% ITM Gamma 0.982 Theta -0.054 Vega 0.001 Open interest 2.5k Model this put
Underlying $10.31
6.5k	2.7k	115.9%	0.275	$0.07		$0.11	—	—	1.7k	861
Call · $10.5 Snapshot session Aug 27, 2026 Last $0.07 Breakeven $10.57 Implied vol 115.9% Delta 0.275 ≈28% ITM Gamma 0.807 Theta -0.156 Vega 0.001 Open interest 6.5k Model this call Put · $10.5 In the money Snapshot session Aug 27, 2026 Last $0.11 Breakeven $10.39 Implied vol — Delta — Gamma — Theta — Vega — Open interest 861 Model this put
2.6k	1.6k	137.8%	0.069	$0.01		$0.57	—	—	15	1
Call · $11 Snapshot session Aug 27, 2026 Last $0.01 Breakeven $11.01 Implied vol 137.8% Delta 0.069 ≈7% ITM Gamma 0.273 Theta -0.075 Vega 0 Open interest 2.6k Model this call Put · $11 In the money Snapshot session Aug 27, 2026 Last $0.57 Breakeven $10.43 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
678	22	210.9%	0.062	$0.01		$1.94	—	—	1	0
Call · $11.5 Snapshot session Aug 27, 2026 Last $0.01 Breakeven $11.51 Implied vol 210.9% Delta 0.062 ≈6% ITM Gamma 0.161 Theta -0.103 Vega 0 Open interest 678 Model this call Put · $11.5 In the money Snapshot session Aug 25, 2026 Last $1.94 Breakeven $9.56 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
164	3	336.4%	0.099	$0.01		$1.49	—	—	2	0
Call · $12 Snapshot session Aug 25, 2026 Last $0.01 Breakeven $12.01 Implied vol 336.4% Delta 0.099 ≈10% ITM Gamma 0.144 Theta -0.235 Vega 0.001 Open interest 164 Model this call Put · $12 In the money Snapshot session Aug 27, 2026 Last $1.49 Breakeven $10.51 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
62	1	429.4%	0.106	$0.02		$2.05	—	—	8	0
Call · $12.5 Snapshot session Aug 26, 2026 Last $0.02 Breakeven $12.52 Implied vol 429.4% Delta 0.106 ≈11% ITM Gamma 0.119 Theta -0.314 Vega 0.001 Open interest 62 Model this call Put · $12.5 In the money Snapshot session Aug 27, 2026 Last $2.05 Breakeven $10.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
212	4	412.7%	0.057	$0.01		$2.52	—	—	7	0
Call · $13 Snapshot session Aug 27, 2026 Last $0.01 Breakeven $13.01 Implied vol 412.7% Delta 0.057 ≈6% ITM Gamma 0.077 Theta -0.188 Vega 0 Open interest 212 Model this call Put · $13 In the money Snapshot session Aug 27, 2026 Last $2.52 Breakeven $10.48 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	534.3%	0.08	$0.07		$2.95	—	—	4	0
Call · $13.5 Snapshot session Jul 23, 2026 Last $0.07 Breakeven $13.57 Implied vol 534.3% Delta 0.08 ≈8% ITM Gamma 0.078 Theta -0.322 Vega 0 Open interest 1 Model this call Put · $13.5 In the money Snapshot session Aug 27, 2026 Last $2.95 Breakeven $10.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	661%	0.108	—		$3.50	—	—	10	0
Call · $14 Snapshot session Unknown Last — Breakeven — Implied vol 661% Delta 0.108 ≈11% ITM Gamma 0.078 Theta -0.492 Vega 0.001 Open interest 0 Model this call Put · $14 In the money Snapshot session Aug 27, 2026 Last $3.50 Breakeven $10.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	735.1%	0.111	—		$4.04	—	—	9	0
Call · $14.5 Snapshot session Unknown Last — Breakeven — Implied vol 735.1% Delta 0.111 ≈11% ITM Gamma 0.072 Theta -0.556 Vega 0.001 Open interest 0 Model this call Put · $14.5 In the money Snapshot session Aug 27, 2026 Last $4.04 Breakeven $10.46 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
55	15	648.9%	0.058	$0.02		$4.57	—	—	7	0
Call · $15 Snapshot session Jul 13, 2026 Last $0.02 Breakeven $15.02 Implied vol 648.9% Delta 0.058 ≈6% ITM Gamma 0.05 Theta -0.302 Vega 0 Open interest 55 Model this call Put · $15 In the money Snapshot session Aug 27, 2026 Last $4.57 Breakeven $10.43 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	714.3%	0.063	—		$5.08	—	—	1	0
Call · $15.5 Snapshot session Unknown Last — Breakeven — Implied vol 714.3% Delta 0.063 ≈6% ITM Gamma 0.048 Theta -0.351 Vega 0 Open interest 0 Model this call Put · $15.5 In the money Snapshot session Aug 26, 2026 Last $5.08 Breakeven $10.42 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	755.8%	0.06	—		$5.57	—	—	2	0
Call · $16 Snapshot session Unknown Last — Breakeven — Implied vol 755.8% Delta 0.06 ≈6% ITM Gamma 0.044 Theta -0.358 Vega 0 Open interest 0 Model this call Put · $16 In the money Snapshot session Aug 26, 2026 Last $5.57 Breakeven $10.43 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$5.98	—	—	7	0
Call · $16.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $16.5 In the money Snapshot session Aug 27, 2026 Last $5.98 Breakeven $10.52 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$6.41	—	—	2	2
Call · $17 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $17 In the money Snapshot session Aug 27, 2026 Last $6.41 Breakeven $10.59 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
0	—	889.2%	0.046	—		$7.57	—	—	3	0
Call · $18 Snapshot session Unknown Last — Breakeven — Implied vol 889.2% Delta 0.046 ≈5% ITM Gamma 0.03 Theta -0.345 Vega 0 Open interest 0 Model this call Put · $18 In the money Snapshot session Aug 27, 2026 Last $7.57 Breakeven $10.43 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$8.55	—	—	5	0
Call · $19 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $19 In the money Snapshot session Aug 26, 2026 Last $8.55 Breakeven $10.45 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 · Jul 13, 2026–Aug 27, 2026; 16 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 1376227 CUSIP 912318409 13F (30d) 70 filings 70 filers Visit website