ALKS · Alkermes plc.

Track ALKS — free Ask ALVIS about ALKS

$49.61 -0.06 (-0.12%) At close · Aug 5

Market Cap

$8.32B

167.76M

Options Chain

15-min delayed Underlying $49.61 · at close Aug 5, 2026 Options Calculator

Positioning

Aug 21, 2026 · 15 days to expiry · 76 contracts

Put / call OI

0.41

Call-heavy positioning

Open interest

14,675

contracts outstanding

Volume

1,127

traded today

Max pain

$45.00

$4.61 below spot

ATM implied vol

54.4%

market's expected move

Open interest by strike · near the money

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 15d Sep 18 43d Nov 20 106d Dec 18 134d Jan 15 162d Feb 19 197d Jan 21 533d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
1	2	—	—	$29.10		$0.14	—	—	1	15
Call · $15 In the money Last $29.10 Breakeven $44.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $15 Last $0.14 Breakeven $14.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 15 Model this put
61	4	200.3%	0.993	$15.93		$0.03	—	—	2	6
Call · $20 In the money Last $15.93 Breakeven $35.93 Implied vol 200.3% Delta 0.993 ≈99% ITM Gamma 0.001 Theta -0.015 Vega 0.003 Open interest 61 Model this call Put · $20 Last $0.03 Breakeven $19.97 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this put
0	—	189.6%	0.992	—		$0.35	—	—	1	3
Call · $21 In the money Last — Breakeven — Implied vol 189.6% Delta 0.992 ≈99% ITM Gamma 0.001 Theta -0.015 Vega 0.003 Open interest 0 Model this call Put · $21 Last $0.35 Breakeven $20.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this put
0	—	137.4%	0.999	—		$0.95	-0.033	250.9%	1	39
Call · $22 In the money Last — Breakeven — Implied vol 137.4% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.004 Vega 0.001 Open interest 0 Model this call Put · $22 Last $0.95 Breakeven $21.05 Implied vol 250.9% Delta -0.033 ≈3% ITM Gamma 0.003 Theta -0.061 Vega 0.007 Open interest 39 Model this put
0	—	127.3%	0.999	—		$0.65	-0.035	239.1%	1	8
Call · $23 In the money Last — Breakeven — Implied vol 127.3% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.004 Vega 0.001 Open interest 0 Model this call Put · $23 Last $0.65 Breakeven $22.35 Implied vol 239.1% Delta -0.035 ≈4% ITM Gamma 0.003 Theta -0.061 Vega 0.007 Open interest 8 Model this put
0	—	160.3%	0.992	—		$0.75	-0.037	227.8%	3	15
Call · $24 In the money Last — Breakeven — Implied vol 160.3% Delta 0.992 ≈99% ITM Gamma 0.001 Theta -0.014 Vega 0.004 Open interest 0 Model this call Put · $24 Last $0.75 Breakeven $23.25 Implied vol 227.8% Delta -0.037 ≈4% ITM Gamma 0.003 Theta -0.061 Vega 0.007 Open interest 15 Model this put
8	2	—	—	$9.40		$0.30	-0.039	217.1%	1	42
Call · $25 In the money Last $9.40 Breakeven $34.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this call Put · $25 Last $0.30 Breakeven $24.70 Implied vol 217.1% Delta -0.039 ≈4% ITM Gamma 0.004 Theta -0.06 Vega 0.007 Open interest 42 Model this put
0	—	156.2%	0.985	—		—	-0.041	206.8%	—	0
Call · $26 In the money Last — Breakeven — Implied vol 156.2% Delta 0.985 ≈98% ITM Gamma 0.002 Theta -0.022 Vega 0.004 Open interest 0 Model this call Put · $26 Last — Breakeven — Implied vol 206.8% Delta -0.041 ≈4% ITM Gamma 0.004 Theta -0.06 Vega 0.007 Open interest 0 Model this put
10	10	173.5%	0.97	$8.74		$3.20	-0.043	196.9%	1	1
Call · $27 In the money Last $8.74 Breakeven $35.74 Implied vol 173.5% Delta 0.97 ≈97% ITM Gamma 0.004 Theta -0.041 Vega 0.008 Open interest 10 Model this call Put · $27 Last $3.20 Breakeven $23.80 Implied vol 196.9% Delta -0.043 ≈4% ITM Gamma 0.005 Theta -0.06 Vega 0.008 Open interest 1 Model this put
0	—	139.5%	0.984	—		—	-0.046	187.4%	—	0
Call · $28 In the money Last — Breakeven — Implied vol 139.5% Delta 0.984 ≈98% ITM Gamma 0.003 Theta -0.021 Vega 0.004 Open interest 0 Model this call Put · $28 Last — Breakeven — Implied vol 187.4% Delta -0.046 ≈5% ITM Gamma 0.005 Theta -0.059 Vega 0.008 Open interest 0 Model this put
0	—	178.8%	0.951	—		$1.24	-0.051	181.1%	1	2
Call · $29 In the money Last — Breakeven — Implied vol 178.8% Delta 0.951 ≈95% ITM Gamma 0.006 Theta -0.063 Vega 0.014 Open interest 0 Model this call Put · $29 Last $1.24 Breakeven $27.76 Implied vol 181.1% Delta -0.051 ≈5% ITM Gamma 0.006 Theta -0.063 Vega 0.014 Open interest 2 Model this put
35	1	168.9%	0.948	$18.87		$0.37	-0.054	171.2%	4	18
Call · $30 In the money Last $18.87 Breakeven $48.87 Implied vol 168.9% Delta 0.948 ≈95% ITM Gamma 0.006 Theta -0.062 Vega 0.014 Open interest 35 Model this call Put · $30 Last $0.37 Breakeven $29.63 Implied vol 171.2% Delta -0.054 ≈5% ITM Gamma 0.006 Theta -0.062 Vega 0.014 Open interest 18 Model this put
0	—	159.3%	0.946	—		$3.10	-0.061	165.3%	1	1
Call · $31 In the money Last — Breakeven — Implied vol 159.3% Delta 0.946 ≈95% ITM Gamma 0.007 Theta -0.061 Vega 0.014 Open interest 0 Model this call Put · $31 Last $3.10 Breakeven $27.90 Implied vol 165.3% Delta -0.061 ≈6% ITM Gamma 0.007 Theta -0.065 Vega 0.014 Open interest 1 Model this put
4	4	150.1%	0.943	$17.63		$1.00	-0.056	149%	3	3
Call · $32 In the money Last $17.63 Breakeven $49.63 Implied vol 150.1% Delta 0.943 ≈94% ITM Gamma 0.007 Theta -0.06 Vega 0.014 Open interest 4 Model this call Put · $32 Last $1.00 Breakeven $31.00 Implied vol 149% Delta -0.056 ≈6% ITM Gamma 0.007 Theta -0.055 Vega 0.014 Open interest 3 Model this put
2	2	110.8%	0.972	$3.85		$1.95	-0.06	140.2%	1	2
Call · $33 In the money Last $3.85 Breakeven $36.85 Implied vol 110.8% Delta 0.972 ≈97% ITM Gamma 0.006 Theta -0.027 Vega 0.008 Open interest 2 Model this call Put · $33 Last $1.95 Breakeven $31.05 Implied vol 140.2% Delta -0.06 ≈6% ITM Gamma 0.008 Theta -0.054 Vega 0.015 Open interest 2 Model this put
6	5	132.4%	0.936	$5.40		$2.30	-0.063	131.6%	1	18
Call · $34 In the money Last $5.40 Breakeven $39.40 Implied vol 132.4% Delta 0.936 ≈94% ITM Gamma 0.009 Theta -0.058 Vega 0.015 Open interest 6 Model this call Put · $34 Last $2.30 Breakeven $31.70 Implied vol 131.6% Delta -0.063 ≈6% ITM Gamma 0.009 Theta -0.053 Vega 0.015 Open interest 18 Model this put
262	2	102.1%	0.961	$15.00		$1.11	-0.13	178.6%	1	97
Call · $35 In the money Last $15.00 Breakeven $50.00 Implied vol 102.1% Delta 0.961 ≈96% ITM Gamma 0.008 Theta -0.032 Vega 0.009 Open interest 262 Model this call Put · $35 Last $1.11 Breakeven $33.89 Implied vol 178.6% Delta -0.13 ≈13% ITM Gamma 0.011 Theta -0.123 Vega 0.022 Open interest 97 Model this put
2	1	115.8%	0.928	$12.70		$0.50	-0.076	118.5%	3	4
Call · $36 In the money Last $12.70 Breakeven $48.70 Implied vol 115.8% Delta 0.928 ≈93% ITM Gamma 0.012 Theta -0.055 Vega 0.015 Open interest 2 Model this call Put · $36 Last $0.50 Breakeven $35.50 Implied vol 118.5% Delta -0.076 ≈8% ITM Gamma 0.012 Theta -0.055 Vega 0.015 Open interest 4 Model this put
7	1	88.3%	0.956	$14.00		$1.40	-0.076	107.4%	5	20
Call · $37 In the money Last $14.00 Breakeven $51.00 Implied vol 88.3% Delta 0.956 ≈96% ITM Gamma 0.01 Theta -0.031 Vega 0.009 Open interest 7 Model this call Put · $37 Last $1.40 Breakeven $35.60 Implied vol 107.4% Delta -0.076 ≈8% ITM Gamma 0.013 Theta -0.05 Vega 0.016 Open interest 20 Model this put
791	10	103.3%	0.913	$12.80		$0.32	-0.081	99.8%	1	71
Call · $38 In the money Last $12.80 Breakeven $50.80 Implied vol 103.3% Delta 0.913 ≈91% ITM Gamma 0.015 Theta -0.057 Vega 0.016 Open interest 791 Model this call Put · $38 Last $0.32 Breakeven $37.68 Implied vol 99.8% Delta -0.081 ≈8% ITM Gamma 0.015 Theta -0.049 Vega 0.016 Open interest 71 Model this put
3	1	83.2%	0.933	$15.00		$2.13	-0.087	92.4%	1	1
Call · $39 In the money Last $15.00 Breakeven $54.00 Implied vol 83.2% Delta 0.933 ≈93% ITM Gamma 0.015 Theta -0.039 Vega 0.016 Open interest 3 Model this call Put · $39 Last $2.13 Breakeven $36.87 Implied vol 92.4% Delta -0.087 ≈9% ITM Gamma 0.017 Theta -0.048 Vega 0.016 Open interest 1 Model this put
89	1	69%	0.945	$9.60		$0.35	-0.101	88.2%	1	56
Call · $40 In the money Last $9.60 Breakeven $49.60 Implied vol 69% Delta 0.945 ≈95% ITM Gamma 0.016 Theta -0.029 Vega 0.009 Open interest 89 Model this call Put · $40 Last $0.35 Breakeven $39.65 Implied vol 88.2% Delta -0.101 ≈10% ITM Gamma 0.02 Theta -0.051 Vega 0.016 Open interest 56 Model this put
0	—	65.9%	0.931	—		$0.25	-0.175	113.5%	748	1.1k
Call · $41 In the money Last — Breakeven — Implied vol 65.9% Delta 0.931 ≈93% ITM Gamma 0.02 Theta -0.033 Vega 0.016 Open interest 0 Model this call Put · $41 Last $0.25 Breakeven $40.75 Implied vol 113.5% Delta -0.175 ≈18% ITM Gamma 0.022 Theta -0.096 Vega 0.025 Open interest 1.1k Model this put
5	3	77.8%	0.87	$10.10		$0.65	-0.118	73.8%	2	102
Call · $42 In the money Last $10.10 Breakeven $52.10 Implied vol 77.8% Delta 0.87 ≈87% ITM Gamma 0.027 Theta -0.058 Vega 0.025 Open interest 5 Model this call Put · $42 Last $0.65 Breakeven $41.35 Implied vol 73.8% Delta -0.118 ≈12% ITM Gamma 0.026 Theta -0.048 Vega 0.025 Open interest 102 Model this put
4	3	55.4%	0.905	$10.33		$0.70	-0.122	63.9%	3	3
Call · $43 In the money Last $10.33 Breakeven $53.33 Implied vol 55.4% Delta 0.905 ≈91% ITM Gamma 0.03 Theta -0.035 Vega 0.017 Open interest 4 Model this call Put · $43 Last $0.70 Breakeven $42.30 Implied vol 63.9% Delta -0.122 ≈12% ITM Gamma 0.031 Theta -0.042 Vega 0.025 Open interest 3 Model this put
1	1	51.9%	0.884	$10.80		$0.55	-0.136	56.2%	35	32
Call · $44 In the money Last $10.80 Breakeven $54.80 Implied vol 51.9% Delta 0.884 ≈88% ITM Gamma 0.037 Theta -0.038 Vega 0.017 Open interest 1 Model this call Put · $44 Last $0.55 Breakeven $43.45 Implied vol 56.2% Delta -0.136 ≈14% ITM Gamma 0.038 Theta -0.04 Vega 0.025 Open interest 32 Model this put
3.5k	5	42.6%	0.881	$5.42		$0.90	-0.152	48.7%	16	1.8k
Call · $45 In the money Last $5.42 Breakeven $50.42 Implied vol 42.6% Delta 0.881 ≈88% ITM Gamma 0.046 Theta -0.032 Vega 0.017 Open interest 3.5k Model this call Put · $45 Last $0.90 Breakeven $44.10 Implied vol 48.7% Delta -0.152 ≈15% ITM Gamma 0.047 Theta -0.037 Vega 0.026 Open interest 1.8k Model this put
1.4k	2	43.1%	0.817	$4.98		$1.00	-0.227	53.6%	47	229
Call · $46 In the money Last $4.98 Breakeven $50.98 Implied vol 43.1% Delta 0.817 ≈82% ITM Gamma 0.06 Theta -0.041 Vega 0.026 Open interest 1.4k Model this call Put · $46 Last $1.00 Breakeven $45.00 Implied vol 53.6% Delta -0.227 ≈23% ITM Gamma 0.055 Theta -0.052 Vega 0.034 Open interest 229 Model this put
0	—	44.5%	0.741	—		$1.10	-0.3	57%	1	1
Call · $47 In the money Last — Breakeven — Implied vol 44.5% Delta 0.741 ≈74% ITM Gamma 0.071 Theta -0.051 Vega 0.034 Open interest 0 Model this call Put · $47 Last $1.10 Breakeven $45.90 Implied vol 57% Delta -0.3 ≈30% ITM Gamma 0.06 Theta -0.064 Vega 0.035 Open interest 1 Model this put
79	1	46.1%	0.66	$7.56		$2.15	-0.339	45.1%	53	51
Call · $48 In the money Last $7.56 Breakeven $55.56 Implied vol 46.1% Delta 0.66 ≈66% ITM Gamma 0.078 Theta -0.059 Vega 0.04 Open interest 79 Model this call Put · $48 Last $2.15 Breakeven $45.85 Implied vol 45.1% Delta -0.339 ≈34% ITM Gamma 0.081 Theta -0.053 Vega 0.04 Open interest 51 Model this put
10	10	56.9%	0.57	$2.00		$1.60	-0.408	33%	1	1
Call · $49 In the money Last $2.00 Breakeven $51.00 Implied vol 56.9% Delta 0.57 ≈57% ITM Gamma 0.068 Theta -0.076 Vega 0.04 Open interest 10 Model this call Put · $49 Last $1.60 Breakeven $47.40 Implied vol 33% Delta -0.408 ≈41% ITM Gamma 0.115 Theta -0.04 Vega 0.04 Open interest 1 Model this put
Underlying $49.61
284	3	49.5%	0.497	$1.89		$1.20	-0.497	59.4%	1	441
Call · $50 Last $1.89 Breakeven $51.89 Implied vol 49.5% Delta 0.497 ≈50% ITM Gamma 0.079 Theta -0.068 Vega 0.041 Open interest 284 Model this call Put · $50 In the money Last $1.20 Breakeven $48.80 Implied vol 59.4% Delta -0.497 ≈50% ITM Gamma 0.066 Theta -0.076 Vega 0.041 Open interest 441 Model this put
3.6k	5	48.1%	0.166	$0.65		$4.25	-0.783	58.6%	12	11
Call · $55 Last $0.65 Breakeven $55.65 Implied vol 48.1% Delta 0.166 ≈17% ITM Gamma 0.051 Theta -0.04 Vega 0.029 Open interest 3.6k Model this call Put · $55 In the money Last $4.25 Breakeven $50.75 Implied vol 58.6% Delta -0.783 ≈78% ITM Gamma 0.05 Theta -0.053 Vega 0.029 Open interest 11 Model this put
153	1	72.6%	0.12	$0.15		$6.60	—	—	56	56
Call · $60 Last $0.15 Breakeven $60.15 Implied vol 72.6% Delta 0.12 ≈12% ITM Gamma 0.027 Theta -0.048 Vega 0.02 Open interest 153 Model this call Put · $60 In the money Last $6.60 Breakeven $53.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 56 Model this put
8	2	129%	0.193	$0.12		—	-0.967	71.5%	—	0
Call · $65 Last $0.12 Breakeven $65.12 Implied vol 129% Delta 0.193 ≈19% ITM Gamma 0.021 Theta -0.117 Vega 0.031 Open interest 8 Model this call Put · $65 In the money Last — Breakeven — Implied vol 71.5% Delta -0.967 ≈97% ITM Gamma 0.012 Theta -0.014 Vega 0.01 Open interest 0 Model this put
35	35	117.8%	0.099	$1.30		—	—	—	—	0
Call · $70 Last $1.30 Breakeven $71.30 Implied vol 117.8% Delta 0.099 ≈10% ITM Gamma 0.014 Theta -0.068 Vega 0.022 Open interest 35 Model this call Put · $70 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	1	128.3%	0.078	$0.18		—	-0.992	89.6%	—	0
Call · $75 Last $0.18 Breakeven $75.18 Implied vol 128.3% Delta 0.078 ≈8% ITM Gamma 0.011 Theta -0.062 Vega 0.013 Open interest 3 Model this call Put · $75 In the money Last — Breakeven — Implied vol 89.6% Delta -0.992 ≈99% ITM Gamma 0.004 Theta -0.005 Vega 0.002 Open interest 0 Model this put
0	—	142.3%	0.071	—		—	—	—	—	0
Call · $80 Last — Breakeven — Implied vol 142.3% Delta 0.071 ≈7% ITM Gamma 0.009 Theta -0.064 Vega 0.013 Open interest 0 Model this call Put · $80 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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. The 19 strikes around the money are shown by default — switch to "All 38" for the wings. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1520262 CUSIP G01767105 13F (30d) 131 filings 115 filers Visit website Investor relations