ALKS · Alkermes plc. · Options Chain

Track ALKS — free

$43.39 -3.32 (-7.11%) At close · Sep 18

S&P 600 member Russell 2000 member Rebalance outlook locked

Market Cap

$7.72B

167.76M

Options Chain

Underlying $43.39 · at close Sep 18, 2026 Options Calculator

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The selected snapshot is partial. Contract totals and positioning figures use only the returned rows.

Positioning

Oct 16, 2026 · 26 days to expiry · at least 38 contracts returned · mixed daily-bar sessions · Sep 1, 2026–Sep 18, 2026; 14 unknown

Put / call OI

3.37

Put-heavy positioning · partial

Open interest

5,701

as of Sep 17, 2026 · returned rows only

Volume

—

dated and unknown daily-bar sessions

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Oct 16 26d Nov 20 61d Dec 18 89d Jan 15 117d Feb 19 152d May 21 243d Jan 21 488d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	4	101.8%	0.826	$8.70	$10.80	$10.80		$0.42	$0.25	$0.65	-0.106	70.6%	93	2
Call · $35 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:48.697 UTC Last $10.80 Breakeven $45.80 Implied vol 101.8% Delta 0.826 ≈83% ITM Gamma 0.022 Theta -0.061 Vega 0.03 Open interest — OI effective date — Model this call Put · $35 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:49.652 UTC Last $0.42 Breakeven $34.58 Implied vol 70.6% Delta -0.106 ≈11% ITM Gamma 0.022 Theta -0.028 Vega 0.021 Open interest 2 OI effective date Sep 17, 2026 Model this put
1	20	83.6%	0.764	$6.00	$8.00	$8.40		$0.60	$0.35	$1.00	-0.172	58.6%	21	2
Call · $38 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:44.578 UTC Last $8.40 Breakeven $46.40 Implied vol 83.6% Delta 0.764 ≈76% ITM Gamma 0.032 Theta -0.06 Vega 0.036 Open interest 1 OI effective date Sep 17, 2026 Model this call Put · $38 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:46.382 UTC Last $0.60 Breakeven $37.40 Implied vol 58.6% Delta -0.172 ≈17% ITM Gamma 0.038 Theta -0.032 Vega 0.03 Open interest 2 OI effective date Sep 17, 2026 Model this put
—	—	72.1%	0.747	$4.10	$7.70	—		$0.75	$0.55	$1.00	-0.204	54.4%	9	4
Call · $39 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.697 UTC Last — Breakeven — Implied vol 72.1% Delta 0.747 ≈75% ITM Gamma 0.038 Theta -0.054 Vega 0.037 Open interest — OI effective date — Model this call Put · $39 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.883 UTC Last $0.75 Breakeven $38.25 Implied vol 54.4% Delta -0.204 ≈20% ITM Gamma 0.045 Theta -0.033 Vega 0.033 Open interest 4 OI effective date Sep 17, 2026 Model this put
—	24	74.8%	0.699	$4.40	$6.30	$6.45		$1.10	$0.95	$1.25	-0.261	55.7%	90	501
Call · $40 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:57.936 UTC Last $6.45 Breakeven $46.45 Implied vol 74.8% Delta 0.699 ≈70% ITM Gamma 0.04 Theta -0.061 Vega 0.04 Open interest — OI effective date — Model this call Put · $40 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.914 UTC Last $1.10 Breakeven $38.90 Implied vol 55.7% Delta -0.261 ≈26% ITM Gamma 0.05 Theta -0.039 Vega 0.038 Open interest 501 OI effective date Sep 17, 2026 Model this put
—	—	68.9%	0.661	$3.60	$5.40	—		$1.15	$0.90	$1.85	-0.314	54.1%	16	70
Call · $41 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:44.578 UTC Last — Breakeven — Implied vol 68.9% Delta 0.661 ≈66% ITM Gamma 0.046 Theta -0.059 Vega 0.042 Open interest — OI effective date — Model this call Put · $41 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.284 UTC Last $1.15 Breakeven $39.85 Implied vol 54.1% Delta -0.314 ≈31% ITM Gamma 0.057 Theta -0.041 Vega 0.041 Open interest 70 OI effective date Sep 17, 2026 Model this put
—	—	65.8%	0.614	$2.90	$4.70	—		$1.99	$1.25	$2.75	-0.381	59.3%	10	—
Call · $42 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:44.578 UTC Last — Breakeven — Implied vol 65.8% Delta 0.614 ≈61% ITM Gamma 0.05 Theta -0.059 Vega 0.044 Open interest — OI effective date — Model this call Put · $42 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:44.579 UTC Last $1.99 Breakeven $40.01 Implied vol 59.3% Delta -0.381 ≈38% ITM Gamma 0.056 Theta -0.048 Vega 0.044 Open interest — OI effective date — Model this put
—	—	65.1%	0.562	$2.30	$4.20	—		—	$1.35	$2.75	-0.438	50%	—	—
Call · $43 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:44.579 UTC Last — Breakeven — Implied vol 65.1% Delta 0.562 ≈56% ITM Gamma 0.052 Theta -0.059 Vega 0.046 Open interest — OI effective date — Model this call Put · $43 Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.696 UTC Last — Breakeven — Implied vol 50% Delta -0.438 ≈44% ITM Gamma 0.068 Theta -0.042 Vega 0.046 Open interest — OI effective date — Model this put
Underlying $43.39
—	8	67.6%	0.511	$1.30	$4.50	$2.50		$2.49	$2.30	$2.80	-0.507	49.5%	20	3.4k
Call · $44 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:46.678 UTC Last $2.50 Breakeven $46.50 Implied vol 67.6% Delta 0.511 ≈51% ITM Gamma 0.051 Theta -0.062 Vega 0.046 Open interest — OI effective date — Model this call Put · $44 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:49.556 UTC Last $2.49 Breakeven $41.51 Implied vol 49.5% Delta -0.507 ≈51% ITM Gamma 0.07 Theta -0.041 Vega 0.046 Open interest 3.4k OI effective date Sep 17, 2026 Model this put
1	9	74.4%	0.472	$1.30	$4.30	$2.75		$2.35	$2.90	$3.40	-0.574	49.7%	387	39
Call · $45 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:46.593 UTC Last $2.75 Breakeven $47.75 Implied vol 74.4% Delta 0.472 ≈47% ITM Gamma 0.046 Theta -0.068 Vega 0.046 Open interest 1 OI effective date Sep 17, 2026 Model this call Put · $45 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:51.405 UTC Last $2.35 Breakeven $42.65 Implied vol 49.7% Delta -0.574 ≈57% ITM Gamma 0.068 Theta -0.04 Vega 0.045 Open interest 39 OI effective date Sep 17, 2026 Model this put
—	35	49.2%	0.36	$0.60	$2.00	$2.20		$2.60	$3.00	$5.00	-0.623	54.2%	55	83
Call · $46 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:50.153 UTC Last $2.20 Breakeven $48.20 Implied vol 49.2% Delta 0.36 ≈36% ITM Gamma 0.066 Theta -0.043 Vega 0.043 Open interest — OI effective date — Model this call Put · $46 In the money Daily-bar session Sep 2, 2026 Quote as of 2026-09-18 19:59:50.120 UTC Last $2.60 Breakeven $43.40 Implied vol 54.2% Delta -0.623 ≈62% ITM Gamma 0.061 Theta -0.043 Vega 0.044 Open interest 83 OI effective date Sep 17, 2026 Model this put
10	7	55.4%	0.327	$0.80	$1.75	$1.75		$3.48	$3.50	$5.80	-0.683	53%	2	108
Call · $47 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.729 UTC Last $1.75 Breakeven $48.75 Implied vol 55.4% Delta 0.327 ≈33% ITM Gamma 0.056 Theta -0.046 Vega 0.042 Open interest 10 OI effective date Sep 17, 2026 Model this call Put · $47 In the money Daily-bar session Sep 16, 2026 Quote as of 2026-09-18 19:59:44.578 UTC Last $3.48 Breakeven $43.52 Implied vol 53% Delta -0.683 ≈68% ITM Gamma 0.058 Theta -0.038 Vega 0.041 Open interest 108 OI effective date Sep 17, 2026 Model this put
179	21	55.5%	0.278	$0.25	$1.80	$1.00		$2.93	$3.70	$5.80	-0.855	33.3%	6	102
Call · $48 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:44.578 UTC Last $1.00 Breakeven $49.00 Implied vol 55.5% Delta 0.278 ≈28% ITM Gamma 0.052 Theta -0.043 Vega 0.039 Open interest 179 OI effective date Sep 17, 2026 Model this call Put · $48 In the money Daily-bar session Sep 2, 2026 Quote as of 2026-09-18 19:59:50.161 UTC Last $2.93 Breakeven $45.07 Implied vol 33.3% Delta -0.855 ≈86% ITM Gamma 0.059 Theta -0.012 Vega 0.026 Open interest 102 OI effective date Sep 17, 2026 Model this put
—	1	62.5%	0.265	$0.30	$1.85	$1.27		$3.90	$4.60	$6.50	-0.942	27.7%	62	62
Call · $49 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:55.992 UTC Last $1.27 Breakeven $50.27 Implied vol 62.5% Delta 0.265 ≈26% ITM Gamma 0.045 Theta -0.047 Vega 0.038 Open interest — OI effective date — Model this call Put · $49 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-18 19:59:50.124 UTC Last $3.90 Breakeven $45.10 Implied vol 27.7% Delta -0.942 ≈94% ITM Gamma 0.036 Theta -0.002 Vega 0.014 Open interest 62 OI effective date Sep 17, 2026 Model this put
612	1	56.5%	0.199	$0.25	$1.10	$1.02		$4.00	$5.20	$7.50	—	—	50	50
Call · $50 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:50.728 UTC Last $1.02 Breakeven $51.02 Implied vol 56.5% Delta 0.199 ≈20% ITM Gamma 0.043 Theta -0.036 Vega 0.032 Open interest 612 OI effective date Sep 17, 2026 Model this call Put · $50 In the money Daily-bar session Sep 2, 2026 Quote as of 2026-09-18 19:59:52.359 UTC Last $4.00 Breakeven $46.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 50 OI effective date Sep 17, 2026 Model this put
502	501	—	—	$0.00	$2.70	$0.79		—	$9.80	$12.70	—	—	—	—
Call · $55 Daily-bar session Sep 4, 2026 Quote as of 2026-09-18 19:59:44.579 UTC Last $0.79 Breakeven $55.79 Implied vol — Delta — Gamma — Theta — Vega — Open interest 502 OI effective date Sep 17, 2026 Model this call Put · $55 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.917 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.55	—		—	$14.70	$18.50	-0.95	69.5%	—	—
Call · $60 Daily-bar session Unknown Quote as of 2026-09-18 19:59:44.289 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $60 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.939 UTC Last — Breakeven — Implied vol 69.5% Delta -0.95 ≈95% ITM Gamma 0.013 Theta -0.01 Vega 0.012 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.45	—		—	$19.70	$23.40	-0.964	79.1%	—	—
Call · $65 Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.696 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $65 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.891 UTC Last — Breakeven — Implied vol 79.1% Delta -0.964 ≈96% ITM Gamma 0.009 Theta -0.007 Vega 0.009 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.40	—		—	$25.20	$28.50	—	—	—	—
Call · $70 Daily-bar session Unknown Quote as of 2026-09-18 19:59:44.290 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $70 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.711 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.40	—		—	$29.60	$33.30	—	—	—	—
Call · $75 Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.252 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $75 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:48.714 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 · Sep 1, 2026–Sep 18, 2026; 14 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.

The selected expiration snapshot also reached its safety bound; totals and positioning figures cover only the returned rows, and completeness-dependent max pain and at-the-money volatility are withheld.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1520262 CUSIP G01767105 13F (30d) 8 filings 7 filers Visit website Investor relations