Alkermes plc
DE ˙ DB ˙ IE00B56GVS15
36,95 € ↑0,49 (1,34%)
2026-06-05
DEL PRIS
SecurityDE:8AK / Alkermes plc
InstitutionGoldman Sachs Group Inc
Latest Disclosed Ownership1,882,178 shares
Latest Disclosed Value $ 66,553,814
Goldman Sachs Group Inc ownership in 8AK / Alkermes plc

On May 15, 2026 - Goldman Sachs Group Inc filed a 13F-HR form disclosing ownership of 1,882,178 shares of Alkermes plc (DE:8AK) valued at $48,936,628 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,267,588 shares of Alkermes plc. This represents a change in shares of -17.00% during the quarter. The current value of the position is $69,546,477 USD.

Goldman Sachs Group Inc has a history of taking positions in derivatives of the underlying security (8AK) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:8AK / Alkermes plc Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ALKERMES CMN G01767105 1,882,178 -385,410 -17.00 66,554 4.90 0.0018
2026-02-10 2025-12-31 13F ALKERMES CMN G01767105 2,267,588 272,643 13.67 63,447 6.01 0.0078
2025-11-14 2025-09-30 13F ALKERMES CMN G01767105 1,994,945 327,248 19.62 59,848 25.44 0.0073
2025-08-14 2025-06-30 13F ALKERMES CMN G01767105 1,667,697 195,646 13.29 47,713 -1.84 0.0065
2025-06-27 2025-03-31 13F/A-2 ALKERMES CMN G01767105 1,472,051 29,255 2.03 48,607 17.14 0.0079
2025-05-16 2025-03-31 13F/A-1 ALKERMES CMN G01767105 1,472,051 29,255 48,607 0.0020
2025-05-09 2025-03-31 13F ALKERMES CMN G01767105 1,489,051 46,255 49,168 0.0015
2025-02-11 2024-12-31 13F ALKERMES CMN G01767105 1,442,796 -303,361 -17.37 41,495 -15.10 0.0065
2024-11-14 2024-09-30 13F ALKERMES CMN G01767105 1,746,157 507,981 41.03 48,875 63.79 0.0079
2024-08-13 2024-06-30 13F ALKERMES CMN G01767105 1,238,176 -147,171 -10.62 29,840 -20.43 0.0050
2024-05-15 2024-03-31 13F ALKERMES CMN G01767105 1,385,347 -17,472 -1.25 37,501 -3.63 0.0066
2024-05-14 2023-12-31 13F/A-2 ALKERMES CMN G01767105 1,402,819 -523,805 -27.19 38,914 -27.89 0.0072
2024-03-01 2023-12-31 13F/A-1 ALKERMES CMN G01767105 1,402,819 38,914
2024-02-13 2023-12-31 13F ALKERMES CMN G01767105 1,402,819 -523,805 38,914 0.0018
2024-05-15 2023-09-30 13F/A-1 ALKERMES CMN G01767105 1,926,624 282,660 17.19 53,965 4.87 0.0115
2023-11-14 2023-09-30 13F ALKERMES CMN G01767105 1,926,624 282,660 53,965 0.0108
2024-05-14 2023-06-30 13F/A-1 ALKERMES CMN G01767105 1,643,964 302,696 22.57 51,456 36.09 0.0110
2023-08-15 2023-06-30 13F ALKERMES CMN G01767105 1,643,964 302,696 51,456 0.0104
2024-05-14 2023-03-31 13F/A-1 ALKERMES CMN G01767105 1,341,268 -524,639 -28.12 37,810 -22.45 0.0087
2023-05-11 2023-03-31 13F ALKERMES CMN G01767105 1,341,268 -524,639 37,810 0.0081
2024-05-14 2022-12-31 13F/A-1 ALKERMES CMN G01767105 1,865,907 -238,566 -11.34 48,756 105,891.30 0.0120
2023-02-13 2022-12-31 13F ALKERMES CMN G01767105 1,865,907 -238,566 48,756 0.0109
2024-05-14 2022-09-30 13F/A-1 ALKERMES CMN G01767105 2,104,473 -179,325 -7.85 47 -32.35 0.0119
2022-11-14 2022-09-30 13F ALKERMES CMN G01767105 2,104,473 -179,325 46,993 0.0109
2024-05-14 2022-06-30 13F/A-2 ALKERMES CMN G01767105 2,283,798 -1,283 -0.06 68 -99.89 0.0170
2022-08-18 2022-06-30 13F/A-1 ALKERMES CMN G01767105 2,283,798 -1,283 68,034 0.0154
2022-08-15 2022-06-30 13F ALKERMES CMN G01767105 2,283,798 -1,283 68,034 0.0046
2022-05-16 2022-03-31 13F ALKERMES CMN G01767105 2,285,081 316,115 16.05 60,121 31.27 0.0126
2022-02-17 2021-12-31 13F/A-1 ALKERMES CMN G01767105 1,968,966 75,453 3.98 45,798 -21.57 0.0091
2022-02-14 2021-12-31 13F ALKERMES CMN G01767105 1,968,966 75,453 45,798 0.0026
2022-01-20 2021-09-30 13F/A-1 ALKERMES CMN G01767105 1,893,513 16,283 0.87 58,396 26.87 0.0124
2021-11-10 2021-09-30 13F ALKERMES CMN G01767105 1,893,513 16,283 58,396 0.0123
2021-08-13 2021-06-30 13F ALKERMES CMN G01767105 1,877,230 995,070 112.80 46,030 179.33 0.0103
2021-05-17 2021-03-31 13F ALKERMES CMN G01767105 882,160 -903,823 -50.61 16,479 -53.75 0.0042
2021-02-12 2020-12-31 13F ALKERMES CMN G01767105 1,785,983 306,417 20.71 35,631 45.34 0.0092
2020-11-13 2020-09-30 13F ALKERMES CMN G01767105 1,479,566 -278,747 -15.85 24,516 -28.15 0.0070
2020-08-12 2020-06-30 13F ALKERMES CMN G01767105 1,758,313 267,571 17.95 34,120 58.72 0.0104
2020-05-15 2020-03-31 13F ALKERMES CMN G01767105 1,490,742 -56,335 -3.64 21,497 -31.89 0.0076
2020-02-14 2019-12-31 13F ALKERMES CMN G01767105 1,547,077 448,420 40.82 31,560 47.24 0.0080
2019-11-14 2019-09-30 13F ALKERMES CMN G01767105 1,098,657 -417,875 -27.55 21,434 -37.30 0.0062
2019-08-14 2019-06-30 13F ALKERMES CMN G01767105 1,516,532 -118,239 -7.23 34,183 -42.70 0.0098
2019-05-15 2019-03-31 13F ALKERMES CMN G01767105 1,634,771 -896,715 -35.42 59,653 -20.15 0.0180
2019-02-14 2018-12-31 13F ALKERMES CMN G01767105 2,531,486 -765,509 -23.22 74,704 -46.61 0.0238
2018-11-14 2018-09-30 13F ALKERMES CMN G01767105 3,296,995 -426,522 -11.45 139,925 -8.70 0.0361
2018-08-14 2018-06-30 13F ALKERMES CMN G01767105 3,723,517 -964,738 -20.58 153,260 -43.60 0.0415
2018-05-15 2018-03-31 13F ALKERMES CMN G01767105 4,688,255 633,610 15.63 271,732 22.45 0.0695
2018-02-14 2017-12-31 13F ALKERMES CMN G01767105 4,054,645 628,299 18.34 221,911 27.39 0.0531
2017-11-14 2017-09-30 13F ALKERMES CMN G01767105 3,426,346 329,522 10.64 174,196 -2.97 0.0427
2017-08-14 2017-06-30 13F ALKERMES CMN G01767105 3,096,824 239,747 8.39 179,523 7.41 0.0465
2017-05-18 2017-03-31 13F/A-1 ALKERMES CMN G01767105 2,857,077 820,355 40.28 167,138 47.65 0.0453
2017-05-15 2017-03-31 13F ALKERMES CMN G01767105 2,857,077 167,138
2017-02-14 2016-12-31 13F ALKERMES CMN G01767105 2,036,722 -530,191 -20.65 113,202 -6.23 0.0320
2016-11-14 2016-09-30 13F ALKERMES CMN G01767105 2,566,913 725,427 39.39 120,722 51.68 0.0366
2016-08-15 2016-06-30 13F ALKERMES CMN G01767105 1,841,486 -524,107 -22.16 79,588 -1.60 0.0260
2016-05-13 2016-03-31 13F ALKERMES CMN G01767105 2,365,593 297,831 14.40 80,880 -50.72 0.0266
2016-02-16 2015-12-31 13F ALKERMES CMN G01767105 2,067,762 123,220 6.34 164,139 43.87 0.0515
2015-11-13 2015-09-30 13F ALKERMES CMN G01767105 1,944,542 -368,804 -15.94 114,086 -23.35 0.0385
2015-08-14 2015-06-30 13F ALKERMES CMN G01767105 2,313,346 435,546 23.19 148,841 30.00 0.0462
2015-05-15 2015-03-31 13F ALKERMES CMN G01767105 1,877,800 484,524 34.78 114,489 40.32 0.0368
2015-02-13 2014-12-31 13F ALKERMES CMN G01767105 1,393,276 854,770 158.73 81,591 253.42 0.0258
2014-11-14 2014-09-30 13F ALKERMES CMN G01767105 538,506 120,649 28.87 23,086 9.77 0.0073
2014-08-14 2014-06-30 13F ALKERMES CMN G01767105 417,857 -74,085 -15.06 21,031 -3.04 0.0066
2014-05-15 2014-03-31 13F ALKERMES CMN G01767105 491,942 171,249 53.40 21,690 66.33 0.0071
2014-02-14 2013-12-31 13F ALKERMES CMN G01767105 320,693 -254,259 -44.22 13,040 -32.54 0.0043
2013-11-14 2013-09-30 13F ALKERMES CMN G01767105 574,952 -168,801 -22.70 19,330 -9.38 0.0071
2013-08-14 2013-06-30 13F ALKERMES CMN G01767105 743,753 314,904 73.43 21,331 168.58 0.0082
2013-06-14 2012-12-31 13F/A-1 ALKERMES CMN G01767105 428,849 -27,310 -5.99 7,942 -16.09 0.0033
2013-06-14 2012-09-30 13F/A-2 ALKERMES CMN G01767105 456,159 -16,713 -3.53 9,465 17.94 0.0038
2013-06-14 2012-06-30 13F/A-2 ALKERMES CMN G01767105 472,872 350,339 285.91 8,025 253.06 0.0036
2013-06-14 2012-03-31 13F/A-1 ALKERMES CMN G01767105 122,533 122,533 2,273 0.0011
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F ALKERMES CMN Call 41,800 1,196 n/a n/a n/a
2025-02-11 2024-12-31 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F ALKERMES CMN Call 30,800 862 n/a n/a n/a
2018-02-14 2017-12-31 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F ALKERMES CMN Call 27,800 1,413 n/a n/a n/a
2017-02-14 2016-12-31 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F ALKERMES CMN Call 27,600 -71.84 1,298 -69.36 n/a n/a n/a
2016-08-15 2016-06-30 13F ALKERMES CMN Call 98,000 4,236 n/a n/a n/a
2016-05-13 2016-03-31 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F ALKERMES CMN Call 230,000 15.12 18,257 55.75 n/a n/a n/a
2015-11-13 2015-09-30 13F ALKERMES CMN Call 199,800 253.00 11,722 221.86 n/a n/a n/a
2015-08-14 2015-06-30 13F ALKERMES CMN Call 56,600 13.20 3,642 19.45 n/a n/a n/a
2015-05-15 2015-03-31 13F ALKERMES CMN Call 50,000 3,049 n/a n/a n/a
2015-02-13 2014-12-31 13F ALKERMES CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-11-14 2014-09-30 13F ALKERMES CMN Call 11,100 0.00 476 -14.85 n/a n/a n/a
2014-08-14 2014-06-30 13F ALKERMES CMN Call 11,100 -86.43 559 -79.67 n/a n/a n/a
2013-11-14 2013-09-30 13F ALKERMES CMN Call 81,800 -1.33 2,750 15.64 n/a n/a n/a
2013-08-14 2013-06-30 13F ALKERMES CMN Call 82,900 2,378 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-14 2025-06-30 13F ALKERMES CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-16 2025-03-31 13F/A ALKERMES CMN Put 17,000 561 n/a n/a n/a
2025-06-27 2025-03-31 13F/A ALKERMES CMN Put 17,000 561 n/a n/a n/a
2018-02-14 2017-12-31 13F ALKERMES CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F ALKERMES CMN Put 27,800 2.96 1,413 -9.71 n/a n/a n/a
2017-08-14 2017-06-30 13F ALKERMES CMN Put 27,000 1,565 n/a n/a n/a
2017-02-14 2016-12-31 13F ALKERMES CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F ALKERMES CMN Put 50,000 -61.54 2,352 -58.14 n/a n/a n/a
2016-08-15 2016-06-30 13F ALKERMES CMN Put 130,000 138.97 5,619 202.10 n/a n/a n/a
2016-05-13 2016-03-31 13F ALKERMES CMN Put 54,400 -32.00 1,860 -70.71 n/a n/a n/a
2016-02-16 2015-12-31 13F ALKERMES CMN Put 80,000 122.22 6,350 200.66 n/a n/a n/a
2015-11-13 2015-09-30 13F ALKERMES CMN Put 36,000 -69.87 2,112 -72.53 n/a n/a n/a
2015-08-14 2015-06-30 13F ALKERMES CMN Put 119,500 99.17 7,689 215.12 n/a n/a n/a
2014-02-14 2013-12-31 13F ALKERMES CMN Put 60,000 0.00 2,440 20.97 n/a n/a n/a
2013-11-14 2013-09-30 13F ALKERMES CMN Put 60,000 -58.56 2,017 -51.43 n/a n/a n/a
2013-08-14 2013-06-30 13F ALKERMES CMN Put 144,800 63.62 4,153 153.39 n/a n/a n/a
2013-06-14 2012-12-31 13F/A ALKERMES CMN Put 88,500 1,639 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.