ATO · Atmos Energy Corp

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$179.38 +1.16 (+0.65%) At close · Jul 28

Market Cap

$29.94B

166.92M

Options Chain

15-min delayed Underlying $179.38 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 46 contracts

Put / call OI

0.11

Call-heavy positioning

Open interest

735

contracts outstanding

Volume

152

traded today

Max pain

$175.00

$4.38 below spot

ATM implied vol

22.5%

market's expected move

Open interest by strike

Calls Puts

115

120

125

130

135

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145

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250

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Oct 16 79d Jan 15 170d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	110.5%	0.957	—		—	—	—	—	0
Call · $115 In the money Last — Breakeven — Implied vol 110.5% Delta 0.957 ≈96% ITM Gamma 0.002 Theta -0.097 Vega 0.037 Open interest 0 Model this call Put · $115 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	102.9%	0.952	—		—	-0.026	87.2%	—	0
Call · $120 In the money Last — Breakeven — Implied vol 102.9% Delta 0.952 ≈95% ITM Gamma 0.002 Theta -0.099 Vega 0.038 Open interest 0 Model this call Put · $120 Last — Breakeven — Implied vol 87.2% Delta -0.026 ≈3% ITM Gamma 0.002 Theta -0.051 Vega 0.037 Open interest 0 Model this put
0	—	96.8%	0.945	—		—	-0.028	79.3%	—	0
Call · $125 In the money Last — Breakeven — Implied vol 96.8% Delta 0.945 ≈95% ITM Gamma 0.003 Theta -0.105 Vega 0.066 Open interest 0 Model this call Put · $125 Last — Breakeven — Implied vol 79.3% Delta -0.028 ≈3% ITM Gamma 0.002 Theta -0.049 Vega 0.038 Open interest 0 Model this put
0	—	91.3%	0.933	—		—	-0.031	71.6%	—	0
Call · $130 In the money Last — Breakeven — Implied vol 91.3% Delta 0.933 ≈93% ITM Gamma 0.003 Theta -0.115 Vega 0.068 Open interest 0 Model this call Put · $130 Last — Breakeven — Implied vol 71.6% Delta -0.031 ≈3% ITM Gamma 0.002 Theta -0.048 Vega 0.039 Open interest 0 Model this put
0	—	82.3%	0.927	—		—	-0.034	64.2%	—	0
Call · $135 In the money Last — Breakeven — Implied vol 82.3% Delta 0.927 ≈93% ITM Gamma 0.004 Theta -0.112 Vega 0.069 Open interest 0 Model this call Put · $135 Last — Breakeven — Implied vol 64.2% Delta -0.034 ≈3% ITM Gamma 0.003 Theta -0.046 Vega 0.04 Open interest 0 Model this put
0	—	70.8%	0.927	—		—	-0.038	57.1%	—	0
Call · $140 In the money Last — Breakeven — Implied vol 70.8% Delta 0.927 ≈93% ITM Gamma 0.004 Theta -0.096 Vega 0.07 Open interest 0 Model this call Put · $140 Last — Breakeven — Implied vol 57.1% Delta -0.038 ≈4% ITM Gamma 0.003 Theta -0.045 Vega 0.041 Open interest 0 Model this put
0	—	61.2%	0.924	—		—	-0.042	50.3%	—	0
Call · $145 In the money Last — Breakeven — Implied vol 61.2% Delta 0.924 ≈92% ITM Gamma 0.005 Theta -0.087 Vega 0.071 Open interest 0 Model this call Put · $145 Last — Breakeven — Implied vol 50.3% Delta -0.042 ≈4% ITM Gamma 0.004 Theta -0.044 Vega 0.041 Open interest 0 Model this put
0	—	60.8%	0.891	—		—	-0.048	43.7%	—	0
Call · $150 In the money Last — Breakeven — Implied vol 60.8% Delta 0.891 ≈89% ITM Gamma 0.007 Theta -0.114 Vega 0.073 Open interest 0 Model this call Put · $150 Last — Breakeven — Implied vol 43.7% Delta -0.048 ≈5% ITM Gamma 0.005 Theta -0.042 Vega 0.042 Open interest 0 Model this put
0	—	53.4%	0.872	—		$0.85	-0.056	37.4%	1	1
Call · $155 In the money Last — Breakeven — Implied vol 53.4% Delta 0.872 ≈87% ITM Gamma 0.009 Theta -0.112 Vega 0.111 Open interest 0 Model this call Put · $155 Last $0.85 Breakeven $154.15 Implied vol 37.4% Delta -0.056 ≈6% ITM Gamma 0.007 Theta -0.041 Vega 0.043 Open interest 1 Model this put
0	—	46.3%	0.844	—		$1.85	-0.089	34.1%	1	0
Call · $160 In the money Last — Breakeven — Implied vol 46.3% Delta 0.844 ≈84% ITM Gamma 0.011 Theta -0.111 Vega 0.113 Open interest 0 Model this call Put · $160 Last $1.85 Breakeven $158.15 Implied vol 34.1% Delta -0.089 ≈9% ITM Gamma 0.01 Theta -0.052 Vega 0.075 Open interest 0 Model this put
0	—	40%	0.805	—		$0.85	-0.152	32.8%	10	14
Call · $165 In the money Last — Breakeven — Implied vol 40% Delta 0.805 ≈80% ITM Gamma 0.015 Theta -0.112 Vega 0.114 Open interest 0 Model this call Put · $165 Last $0.85 Breakeven $164.15 Implied vol 32.8% Delta -0.152 ≈15% ITM Gamma 0.016 Theta -0.074 Vega 0.114 Open interest 14 Model this put
27	2	36.6%	0.727	$7.90		$1.60	-0.208	26.6%	2	5
Call · $170 In the money Last $7.90 Breakeven $177.90 Implied vol 36.6% Delta 0.727 ≈73% ITM Gamma 0.02 Theta -0.122 Vega 0.152 Open interest 27 Model this call Put · $170 Last $1.60 Breakeven $168.40 Implied vol 26.6% Delta -0.208 ≈21% ITM Gamma 0.024 Theta -0.074 Vega 0.116 Open interest 5 Model this put
532	86	33.1%	0.624	$9.00		$3.10	-0.337	23.7%	1	9
Call · $175 In the money Last $9.00 Breakeven $184.00 Implied vol 33.1% Delta 0.624 ≈62% ITM Gamma 0.025 Theta -0.126 Vega 0.177 Open interest 532 Model this call Put · $175 Last $3.10 Breakeven $171.90 Implied vol 23.7% Delta -0.337 ≈34% ITM Gamma 0.035 Theta -0.083 Vega 0.157 Open interest 9 Model this put
Underlying $179.38
68	2	25.8%	0.483	$4.70		$5.80	-0.532	19.3%	43	43
Call · $180 Last $4.70 Breakeven $184.70 Implied vol 25.8% Delta 0.483 ≈48% ITM Gamma 0.034 Theta -0.103 Vega 0.18 Open interest 68 Model this call Put · $180 In the money Last $5.80 Breakeven $174.20 Implied vol 19.3% Delta -0.532 ≈53% ITM Gamma 0.046 Theta -0.071 Vega 0.181 Open interest 43 Model this put
18	1	22.5%	0.295	$2.00		$8.98	-0.782	16.3%	1	1
Call · $185 Last $2.00 Breakeven $187.00 Implied vol 22.5% Delta 0.295 ≈30% ITM Gamma 0.034 Theta -0.077 Vega 0.161 Open interest 18 Model this call Put · $185 In the money Last $8.98 Breakeven $176.02 Implied vol 16.3% Delta -0.782 ≈78% ITM Gamma 0.042 Theta -0.042 Vega 0.123 Open interest 1 Model this put
1	1	23.1%	0.164	$1.00		—	—	—	—	0
Call · $190 Last $1.00 Breakeven $191.00 Implied vol 23.1% Delta 0.164 ≈16% ITM Gamma 0.024 Theta -0.057 Vega 0.126 Open interest 1 Model this call Put · $190 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
16	1	24.7%	0.092	$0.40		—	—	—	—	0
Call · $195 Last $0.40 Breakeven $195.40 Implied vol 24.7% Delta 0.092 ≈9% ITM Gamma 0.015 Theta -0.04 Vega 0.085 Open interest 16 Model this call Put · $195 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	29.5%	0.073	—		—	—	—	—	0
Call · $200 Last — Breakeven — Implied vol 29.5% Delta 0.073 ≈7% ITM Gamma 0.01 Theta -0.04 Vega 0.05 Open interest 0 Model this call Put · $200 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	38.7%	0.057	—		—	—	—	—	0
Call · $210 Last — Breakeven — Implied vol 38.7% Delta 0.057 ≈6% ITM Gamma 0.007 Theta -0.043 Vega 0.051 Open interest 0 Model this call Put · $210 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	47.3%	0.048	—		—	—	—	—	0
Call · $220 Last — Breakeven — Implied vol 47.3% Delta 0.048 ≈5% ITM Gamma 0.005 Theta -0.046 Vega 0.052 Open interest 0 Model this call Put · $220 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $230 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $230 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $240 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $240 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $250 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $250 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 731802 CUSIP 049560105 13F (30d) 342 filings 315 filers Visit website Investor relations