ATO · Atmos Energy Corp · Options Chain

Track ATO — free

$163.19 -1.62 (-0.98%) At close · Sep 11

S&P 500 member Russell 1000 member Rebalance outlook locked

Market Cap

$27.58B

168.99M

Options Chain

Underlying $163.19 · at close Sep 11, 2026 Options Calculator

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Positioning

Sep 18, 2026 · 5 days to expiry · 46 contracts · mixed daily-bar sessions · Jul 17, 2026–Sep 11, 2026; 33 unknown

Put / call OI

0.12

Call-heavy positioning

Open interest

691

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$170.00

$6.81 above spot

ATM implied vol

20.2%

market's expected move

Open interest by strike

Calls Puts

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

220

230

240

250

260

270

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 5d Oct 16 33d Jan 15 124d Apr 16 215d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$37.60	$40.00	—		—	$0.00	$2.15	—	—	—	—
Call · $125 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.389 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $125 Daily-bar session Unknown Quote as of 2026-09-11 19:58:10.700 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$32.60	$35.10	—		—	$0.00	$2.15	—	—	—	—
Call · $130 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.333 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $130 Daily-bar session Unknown Quote as of 2026-09-11 19:58:11.200 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$27.40	$30.00	—		—	$0.00	$2.15	—	—	—	—
Call · $135 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.389 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $135 Daily-bar session Unknown Quote as of 2026-09-11 19:58:10.800 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	82.1%	0.95	$22.60	$24.60	—		—	$0.00	$2.15	—	—	—	—
Call · $140 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.267 UTC Last — Breakeven — Implied vol 82.1% Delta 0.95 ≈95% ITM Gamma 0.007 Theta -0.175 Vega 0.02 Open interest — OI effective date — Model this call Put · $140 Daily-bar session Unknown Quote as of 2026-09-11 19:58:09.850 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	68.8%	0.935	$17.50	$19.80	—		—	$0.00	$2.15	—	—	—	—
Call · $145 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.256 UTC Last — Breakeven — Implied vol 68.8% Delta 0.935 ≈94% ITM Gamma 0.01 Theta -0.181 Vega 0.024 Open interest — OI effective date — Model this call Put · $145 Daily-bar session Unknown Quote as of 2026-09-11 19:58:10.525 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	56.3%	0.907	$12.70	$14.80	—		$0.20	$0.00	$2.15	—	—	2	3
Call · $150 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.422 UTC Last — Breakeven — Implied vol 56.3% Delta 0.907 ≈91% ITM Gamma 0.016 Theta -0.194 Vega 0.032 Open interest — OI effective date — Model this call Put · $150 Daily-bar session Aug 20, 2026 Quote as of 2026-09-11 19:58:10.025 UTC Last $0.20 Breakeven $149.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 10, 2026 Model this put
—	—	44.2%	0.849	$7.80	$10.10	—		$1.58	$0.00	$2.15	—	—	1	1
Call · $155 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:53.192 UTC Last — Breakeven — Implied vol 44.2% Delta 0.849 ≈85% ITM Gamma 0.028 Theta -0.212 Vega 0.045 Open interest — OI effective date — Model this call Put · $155 Daily-bar session Aug 5, 2026 Quote as of 2026-09-11 19:59:59.620 UTC Last $1.58 Breakeven $153.42 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
—	—	29.8%	0.726	$3.40	$5.10	—		$0.85	$0.00	$2.40	—	—	1	22
Call · $160 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.373 UTC Last — Breakeven — Implied vol 29.8% Delta 0.726 ≈73% ITM Gamma 0.059 Theta -0.201 Vega 0.064 Open interest — OI effective date — Model this call Put · $160 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 19:59:59.373 UTC Last $0.85 Breakeven $159.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 22 OI effective date Sep 10, 2026 Model this put
Underlying $163.19
5	7	20.8%	0.337	$0.35	$1.40	$0.97		$1.04	$1.35	$3.70	-0.672	19.7%	2	23
Call · $165 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.430 UTC Last $0.97 Breakeven $165.97 Implied vol 20.8% Delta 0.337 ≈34% ITM Gamma 0.092 Theta -0.151 Vega 0.07 Open interest 5 OI effective date Sep 10, 2026 Model this call Put · $165 In the money Daily-bar session Sep 2, 2026 Quote as of 2026-09-11 19:59:59.808 UTC Last $1.04 Breakeven $163.96 Implied vol 19.7% Delta -0.672 ≈67% ITM Gamma 0.096 Theta -0.124 Vega 0.069 Open interest 23 OI effective date Sep 10, 2026 Model this put
593	7	—	—	$0.00	$2.25	$1.38		$5.50	$5.00	$7.40	—	—	2	23
Call · $170 Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:58:49.323 UTC Last $1.38 Breakeven $171.38 Implied vol — Delta — Gamma — Theta — Vega — Open interest 593 OI effective date Sep 10, 2026 Model this call Put · $170 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:58:49.027 UTC Last $5.50 Breakeven $164.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 23 OI effective date Sep 10, 2026 Model this put
8	3	—	—	$0.00	$0.35	$0.15		$7.50	$10.10	$12.40	—	—	2	—
Call · $175 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:58:49.567 UTC Last $0.15 Breakeven $175.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 OI effective date Sep 10, 2026 Model this call Put · $175 In the money Daily-bar session Aug 4, 2026 Quote as of 2026-09-11 19:59:59.425 UTC Last $7.50 Breakeven $167.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
4	1	—	—	$0.00	$2.15	$0.20		$6.40	$15.10	$17.40	—	—	1	—
Call · $180 Daily-bar session Aug 25, 2026 Quote as of 2026-09-11 19:58:49.323 UTC Last $0.20 Breakeven $180.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 OI effective date Sep 10, 2026 Model this call Put · $180 In the money Daily-bar session Jul 17, 2026 Quote as of 2026-09-11 19:58:49.027 UTC Last $6.40 Breakeven $173.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
5	2	—	—	$0.00	$2.15	$1.80		—	$19.90	$22.60	—	—	—	—
Call · $185 Daily-bar session Jul 21, 2026 Quote as of 2026-09-11 19:49:50.476 UTC Last $1.80 Breakeven $186.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 10, 2026 Model this call Put · $185 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.036 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
4	4	—	—	$0.00	$2.15	$1.80		—	$24.90	$27.60	—	—	—	—
Call · $190 Daily-bar session Jul 20, 2026 Quote as of 2026-09-11 19:49:50.477 UTC Last $1.80 Breakeven $191.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 OI effective date Sep 10, 2026 Model this call Put · $190 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.091 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$29.90	$32.60	—	—	—	—
Call · $195 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.477 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $195 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.037 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$35.10	$37.70	—	—	—	—
Call · $200 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.476 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $200 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.333 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$44.70	$48.20	—	—	—	—
Call · $210 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.477 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $210 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.363 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$55.10	$57.30	—	—	—	—
Call · $220 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.477 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $220 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.334 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$64.70	$67.60	—	—	—	—
Call · $230 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.477 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $230 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.363 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$75.10	$77.40	—	—	—	—
Call · $240 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.477 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $240 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.333 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$85.10	$87.40	—	—	—	—
Call · $250 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.476 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $250 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.389 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$94.90	$97.50	—	—	—	—
Call · $260 Daily-bar session Unknown Quote as of 2026-09-11 19:49:50.476 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $260 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:49.033 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$5.00	—		—	$104.70	$107.40	—	—	—	—
Call · $270 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.503 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $270 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:58:50.062 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 · Jul 17, 2026–Sep 11, 2026; 33 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 731802 CUSIP 049560105 13F (30d) 200 filings 199 filers Visit website Investor relations