Amylyx Pharmaceuticals (AMLX) Options Chain

NASDAQ: AMLXHealth CareBiotechnology: Pharmaceutical PreparationsUSD

28.14+0.94 (+3.46%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 69
Share price: $28.14
Put/call ratio (OI): 0.18
Put/call ratio (volume): 0.10
ATM implied volatility: 28.5%
Expected move: ±$3.49
Open interest (C / P): 541 / 95

AMLX options summary

The AMLX options chain for the December 18, 2026 expiration lists 23 call and 17 put contracts, with 69 days until expiration. Open interest stands at 541 calls and 95 puts, a put/call ratio of 0.18, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $28.00 strike is 28.5%, which implies the market expects a move of about ±$3.49 (12.4%) in Amylyx Pharmaceuticals stock by expiration.

The most open interest sits at the $25.00 call (346 contracts) and the $30.00 put (25 contracts).

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

AMLX options chain · December 18, 2026

AMLX 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	—	293.0%	27.10	23.40	27.20	3.00	—	—	—	—	—	—
0	2	—	11.62	0.00	0.00	5.00	0.00	1.85	0.80	346.3%	—	5
11	1	164.1%	25.00	18.40	22.20	8.00	0.00	0.00	0.10	50.0%	3	0
26	1	—	10.50	26.70	30.40	10.00	0.00	0.75	0.40	164.1%	2	11
—	—	—	—	—	—	11.00	0.00	0.75	0.35	150.4%	1	3
47	14	114.7%	24.90	14.40	18.20	12.00	—	—	—	—	—	—
—	—	—	—	—	—	13.00	0.00	0.00	2.77	50.0%	—	0
0	184	—	23.50	0.00	0.00	15.00	0.00	0.95	5.18	113.4%	—	2
2	2	527.7%	7.70	21.30	24.50	16.00	0.00	0.95	5.60	103.8%	—	1
0	159	—	21.72	0.00	0.00	17.00	0.00	0.95	6.20	94.7%	1	2
0	2	—	20.80	0.00	0.00	18.00	0.00	0.00	0.35	25.0%	11	0
25	5	76.1%	8.25	7.00	10.50	20.00	—	—	—	—	—	—
0	3	—	12.79	0.00	0.00	22.00	0.00	1.50	0.37	65.3%	15	10
346	1	61.1%	4.40	3.40	5.90	25.00	0.00	2.10	2.30	75.2%	1	12
0	161	—	14.05	0.00	0.00	27.00	—	—	—	—	—	—
1	—	56.7%	3.79	1.75	3.90	28.00	0.00	0.00	1.40	0.4%	—	0
AMLX $28.14
26	1	60.0%	5.90	1.05	3.30	30.00	2.35	4.80	3.50	50.4%	12	25
32	30	58.0%	2.00	0.80	2.70	31.00	—	—	—	—	—	—
3	1	59.2%	1.33	0.55	2.50	32.00	3.90	6.60	3.30	56.3%	10	11
5	10	57.5%	1.50	0.00	1.65	35.00	6.60	9.00	4.40	60.6%	1	2
4	3	62.7%	1.37	0.00	1.45	37.00	—	—	—	—	—	—
10	10	64.9%	2.24	0.00	1.35	38.00	—	—	—	—	—	—
0	—	12.5%	5.30	0.00	0.00	39.00	—	—	—	—	—	—
3	5	68.4%	1.55	0.00	1.15	40.00	11.00	13.70	9.16	65.3%	5	5
—	—	—	—	—	—	42.00	12.90	15.70	9.57	69.3%	—	6
0	—	25.0%	3.90	0.00	0.00	45.00	—	—	—	—	—	—

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 AMLX put/call ratio?

For the December 18, 2026 expiration, the AMLX put/call ratio based on open interest is 0.18 (95 puts vs 541 calls), and 0.10 based on today's volume. A ratio above 1 means more puts than calls.

What is AMLX's implied volatility?

At-the-money implied volatility for AMLX options expiring December 18, 2026 is about 28.5%, an annualized estimate of how much the market expects Amylyx Pharmaceuticals stock to move.

How many AMLX option expiration dates are there?

AMLX has 10 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.