Alkermes (ALKS) Options Chain

NASDAQ: ALKSHealth CareBiotechnology: Pharmaceutical PreparationsUSD

40.61+0.50 (+1.25%)

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

Expiration date

Expiration: May 21, 2027
Days to expiration: 224
Share price: $40.61
Put/call ratio (OI): 1.63
Put/call ratio (volume): 1.13
ATM implied volatility: 55.9%
Expected move: ±$17.79
Open interest (C / P): 8 / 13

ALKS options summary

The ALKS options chain for the May 21, 2027 expiration lists 7 call and 4 put contracts, with 224 days until expiration. Open interest stands at 8 calls and 13 puts, a put/call ratio of 1.63, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $41.00 strike is 55.9%, which implies the market expects a move of about ±$17.79 (43.8%) in Alkermes stock by expiration.

The most open interest sits at the $44.00 call (3 contracts) and the $55.00 put (8 contracts).

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

ALKS options chain · May 21, 2027

ALKS 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
—	—	—	—	—	—	30.00	0.15	4.30	2.00	56.3%	1	0
—	—	—	—	—	—	37.00	2.55	6.50	4.29	51.1%	—	1
—	—	—	—	—	—	40.00	3.90	7.90	4.80	65.7%	—	4
ALKS $40.61
1	—	55.9%	7.35	4.80	9.00	41.00	—	—	—	—	—	—
2	1	55.5%	7.25	4.40	8.50	42.00	—	—	—	—	—	—
0	1	55.7%	6.81	4.20	8.00	43.00	—	—	—	—	—	—
3	4	54.1%	5.93	3.80	7.30	44.00	—	—	—	—	—	—
0	1	54.8%	6.02	3.20	7.40	45.00	—	—	—	—	—	—
1	—	54.9%	5.55	3.00	7.00	46.00	—	—	—	—	—	—
1	1	54.8%	4.66	2.40	6.40	48.00	—	—	—	—	—	—
—	—	—	—	—	—	55.00	13.90	17.80	15.17	59.8%	8	8

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 ALKS put/call ratio?

For the May 21, 2027 expiration, the ALKS put/call ratio based on open interest is 1.63 (13 puts vs 8 calls), and 1.13 based on today's volume. A ratio above 1 means more puts than calls.

What is ALKS's implied volatility?

At-the-money implied volatility for ALKS options expiring May 21, 2027 is about 55.9%, an annualized estimate of how much the market expects Alkermes stock to move.

How many ALKS option expiration dates are there?

ALKS has 7 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.

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.