Antero Midstream (AM) Options Chain

NYSE: AMUtilitiesNatural Gas DistributionUSD

21.09-0.10 (-0.47%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 21, 2028
Days to expiration: 468
Share price: $21.09
Put/call ratio (OI): 0.16
Put/call ratio (volume): 0.15
ATM implied volatility: 41.8%
Expected move: ±$9.98
Open interest (C / P): 6.31K / 1.02K

AM options summary

The AM options chain for the January 21, 2028 expiration lists 13 call and 9 put contracts, with 468 days until expiration. Open interest stands at 6,312 calls and 1,024 puts, a put/call ratio of 0.16, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $22.00 strike is 41.8%, which implies the market expects a move of about ±$9.98 (47.3%) in Antero Midstream stock by expiration.

The most open interest sits at the $22.00 call (2.23K contracts) and the $10.00 put (466 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

AM options chain · January 21, 2028

AM calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
0	2	—	19.60	0.00	0.00	3.00	—	—	—	—	—	—
0	2	141.1%	17.00	15.00	19.90	5.00	—	—	—	—	—	—
0	2	—	13.62	0.00	0.00	8.00	—	—	—	—	—	—
0	2	—	11.70	0.00	0.00	10.00	0.00	1.10	0.15	56.8%	30	466
150	2	57.8%	8.90	7.00	12.00	13.00	0.00	0.70	0.30	43.7%	2	280
706	275	50.7%	6.54	4.30	7.80	15.00	0.05	2.85	0.44	67.9%	5	28
769	105	43.6%	4.64	2.80	6.10	17.00	0.00	3.20	0.70	59.2%	1	14
280	11	40.5%	3.05	0.90	4.30	20.00	0.70	2.15	1.50	28.8%	20	98
AM $21.09
2,228	1	42.9%	1.92	1.65	3.70	22.00	1.60	4.40	2.30	40.7%	3	136
1,900	3	27.4%	1.25	0.90	1.30	25.00	3.70	6.50	4.20	41.4%	—	1
106	9	27.5%	0.70	0.60	0.90	27.00	—	—	—	—	—	—
72	20	27.4%	0.50	0.05	0.50	30.00	0.00	0.00	7.50	—	2	0
101	1	63.8%	0.15	0.00	2.70	35.00	12.50	15.60	13.60	52.1%	2	1

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the AM put/call ratio?

For the January 21, 2028 expiration, the AM put/call ratio based on open interest is 0.16 (1,024 puts vs 6,312 calls), and 0.15 based on today's volume. A ratio above 1 means more puts than calls.

What is AM's implied volatility?

At-the-money implied volatility for AM options expiring January 21, 2028 is about 41.8%, an annualized estimate of how much the market expects Antero Midstream stock to move.

How many AM option expiration dates are there?

AM has 7 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.