AM · Antero Midstream Corp

Track AM — free Ask ALVIS about AM

$21.72 -0.25 (-1.14%) At close · Jul 28

Market Cap

$10.44B

474.98M

Options Chain

15-min delayed Underlying $21.72 · today Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 36 contracts

Put / call OI

0.10

Call-heavy positioning

Open interest

8,799

contracts outstanding

Volume

884

traded today

Max pain

$22.00

$0.28 above spot

ATM implied vol

27.8%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Dec 18 142d Jan 15 170d Mar 19 233d Jan 21 541d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
6	156	—	—	$8.80		—	—	—	—	0
Call · $13 In the money Last $8.80 Breakeven $21.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this call Put · $13 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	27	—	—	$7.85		—	—	—	—	0
Call · $14 In the money Last $7.85 Breakeven $21.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $14 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	79.8%	0.976	$6.58		$0.08	—	—	1	1
Call · $15 In the money Last $6.58 Breakeven $21.58 Implied vol 79.8% Delta 0.976 ≈98% ITM Gamma 0.015 Theta -0.004 Vega 0.004 Open interest 1 Model this call Put · $15 Last $0.08 Breakeven $14.92 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
3	10	—	—	$5.40		—	—	—	—	0
Call · $16 In the money Last $5.40 Breakeven $21.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $16 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	8	55.4%	0.967	$5.15		—	—	—	—	0
Call · $17 In the money Last $5.15 Breakeven $22.15 Implied vol 55.4% Delta 0.967 ≈97% ITM Gamma 0.027 Theta -0.004 Vega 0.005 Open interest 1 Model this call Put · $17 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
8	35	44.2%	0.96	$4.10		—	-0.108	63.8%	—	0
Call · $18 In the money Last $4.10 Breakeven $22.10 Implied vol 44.2% Delta 0.96 ≈96% ITM Gamma 0.039 Theta -0.004 Vega 0.005 Open interest 8 Model this call Put · $18 Last — Breakeven — Implied vol 63.8% Delta -0.108 ≈11% ITM Gamma 0.053 Theta -0.014 Vega 0.009 Open interest 0 Model this put
9	35	33.6%	0.949	$3.10		$0.05	-0.09	40.3%	15	84
Call · $19 In the money Last $3.10 Breakeven $22.10 Implied vol 33.6% Delta 0.949 ≈95% ITM Gamma 0.063 Theta -0.003 Vega 0.005 Open interest 9 Model this call Put · $19 Last $0.05 Breakeven $18.95 Implied vol 40.3% Delta -0.09 ≈9% ITM Gamma 0.073 Theta -0.008 Vega 0.009 Open interest 84 Model this put
3	11	32.3%	0.85	$1.50		$0.10	-0.164	34.1%	1	242
Call · $20 In the money Last $1.50 Breakeven $21.50 Implied vol 32.3% Delta 0.85 ≈85% ITM Gamma 0.134 Theta -0.008 Vega 0.014 Open interest 3 Model this call Put · $20 Last $0.10 Breakeven $19.90 Implied vol 34.1% Delta -0.164 ≈16% ITM Gamma 0.131 Theta -0.01 Vega 0.014 Open interest 242 Model this put
10	5	24%	0.714	$0.93		$0.34	-0.317	29.3%	30	169
Call · $21 In the money Last $0.93 Breakeven $21.93 Implied vol 24% Delta 0.714 ≈71% ITM Gamma 0.259 Theta -0.009 Vega 0.019 Open interest 10 Model this call Put · $21 Last $0.34 Breakeven $20.66 Implied vol 29.3% Delta -0.317 ≈32% ITM Gamma 0.221 Theta -0.012 Vega 0.019 Open interest 169 Model this put
Underlying $21.72
71	66	23.9%	0.423	$0.46		$0.70	-0.549	31.8%	2	223
Call · $22 Last $0.46 Breakeven $22.46 Implied vol 23.9% Delta 0.423 ≈42% ITM Gamma 0.298 Theta -0.011 Vega 0.022 Open interest 71 Model this call Put · $22 In the money Last $0.70 Breakeven $21.30 Implied vol 31.8% Delta -0.549 ≈55% ITM Gamma 0.225 Theta -0.015 Vega 0.022 Open interest 223 Model this put
4k	40	27.1%	0.21	$0.11		$1.50	-0.73	34.4%	1	36
Call · $23 Last $0.11 Breakeven $23.11 Implied vol 27.1% Delta 0.21 ≈21% ITM Gamma 0.193 Theta -0.009 Vega 0.015 Open interest 4k Model this call Put · $23 In the money Last $1.50 Breakeven $21.50 Implied vol 34.4% Delta -0.73 ≈73% ITM Gamma 0.173 Theta -0.014 Vega 0.02 Open interest 36 Model this put
2.2k	15	29.6%	0.098	$0.05		—	-0.834	38.4%	—	0
Call · $24 Last $0.05 Breakeven $24.05 Implied vol 29.6% Delta 0.098 ≈10% ITM Gamma 0.105 Theta -0.006 Vega 0.01 Open interest 2.2k Model this call Put · $24 In the money Last — Breakeven — Implied vol 38.4% Delta -0.834 ≈83% ITM Gamma 0.116 Theta -0.012 Vega 0.015 Open interest 0 Model this put
523	8	40.9%	0.096	$0.05		—	-0.897	41.5%	—	0
Call · $25 Last $0.05 Breakeven $25.05 Implied vol 40.9% Delta 0.096 ≈10% ITM Gamma 0.075 Theta -0.008 Vega 0.01 Open interest 523 Model this call Put · $25 In the money Last — Breakeven — Implied vol 41.5% Delta -0.897 ≈90% ITM Gamma 0.076 Theta -0.009 Vega 0.01 Open interest 0 Model this put
1.1k	391	46.2%	0.068	$0.09		$3.50	-0.91	50.1%	10	3
Call · $26 Last $0.09 Breakeven $26.09 Implied vol 46.2% Delta 0.068 ≈7% ITM Gamma 0.052 Theta -0.007 Vega 0.006 Open interest 1.1k Model this call Put · $26 In the money Last $3.50 Breakeven $22.50 Implied vol 50.1% Delta -0.91 ≈91% ITM Gamma 0.057 Theta -0.01 Vega 0.011 Open interest 3 Model this put
62	1	—	—	$0.03		$5.05	-0.945	50.8%	4	6
Call · $27 Last $0.03 Breakeven $27.03 Implied vol — Delta — Gamma — Theta — Vega — Open interest 62 Model this call Put · $27 In the money Last $5.05 Breakeven $21.95 Implied vol 50.8% Delta -0.945 ≈94% ITM Gamma 0.038 Theta -0.007 Vega 0.006 Open interest 6 Model this put
0	—	—	—	—		—	-0.886	75.6%	—	0
Call · $28 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $28 In the money Last — Breakeven — Implied vol 75.6% Delta -0.886 ≈89% ITM Gamma 0.045 Theta -0.017 Vega 0.011 Open interest 0 Model this put
0	—	—	—	—		$6.95	-0.952	64.5%	10	4
Call · $29 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $29 In the money Last $6.95 Breakeven $22.05 Implied vol 64.5% Delta -0.952 ≈95% ITM Gamma 0.027 Theta -0.007 Vega 0.006 Open interest 4 Model this put
0	—	—	—	—		—	-0.955	70.9%	—	0
Call · $30 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 In the money Last — Breakeven — Implied vol 70.9% Delta -0.955 ≈95% ITM Gamma 0.023 Theta -0.008 Vega 0.007 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 1623925 CUSIP 03676B102 13F (30d) 116 filings 115 filers Visit website Investor relations