Alkermes plc
US ˙ NasdaqGS ˙ IE00B56GVS15

SecurityALKS / Alkermes plc
InstitutionXponance, Inc.
Latest Disclosed Ownership15,370 shares
Latest Disclosed Value $ 543,483
Xponance, Inc. reports 2.92% decrease in ownership of ALKS / Alkermes plc

On May 13, 2026 - Xponance, Inc. filed a 13F-HR form disclosing ownership of 15,370 shares of Alkermes plc (US:ALKS) valued at $543,483 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 15,833 shares of Alkermes plc. This represents a change in shares of -2.92% during the quarter. The current value of the position is $657,221 USD.

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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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)
2026-05-13 2026-03-31 13F ALKERMES SHS G01767105 15,370 -463 -2.92 543 22.57 0.0039
2026-02-12 2025-12-31 13F ALKERMES SHS G01767105 15,833 127 0.81 443 -5.94 0.0033
2025-11-12 2025-09-30 13F ALKERMES SHS G01767105 15,706 -2,092 -11.75 471 -7.47 0.0037
2025-08-14 2025-06-30 13F ALKERMES SHS G01767105 17,798 -1,040 -5.52 509 -18.17 0.0043
2025-05-01 2025-03-31 13F ALKERMES SHS G01767105 18,838 284 1.53 622 16.70 0.0060
2025-02-11 2024-12-31 13F ALKERMES SHS G01767105 18,554 976 5.55 534 8.33 0.0049
2024-11-12 2024-09-30 13F ALKERMES SHS G01767105 17,578 884 5.30 492 22.39 0.0047
2024-08-14 2024-06-30 13F ALKERMES SHS G01767105 16,694 -261 -1.54 402 -12.23 0.0041
2024-05-13 2024-03-31 13F ALKERMES SHS G01767105 16,955 70 0.41 459 -2.14 0.0048
2024-01-31 2023-12-31 13F ALKERMES SHS G01767105 16,885 -142 -0.83 468 -1.68 0.0056
2023-10-24 2023-09-30 13F ALKERMES SHS G01767105 17,027 322 1.93 477 -8.81 0.0065
2023-07-14 2023-06-30 13F ALKERMES SHS G01767105 16,705 6,453 62.94 523 80.62 0.0070
2023-04-18 2023-03-31 13F ALKERMES SHS G01767105 10,252 88 0.87 289 9.06 0.0042
2023-01-24 2022-12-31 13F ALKERMES SHS G01767105 10,164 427 4.39 266 22.12 0.0043
2022-10-24 2022-09-30 13F ALKERMES SHS G01767105 9,737 711 7.88 217 -19.33 0.0042
2022-08-02 2022-06-30 13F ALKERMES SHS G01767105 9,026 1,198 15.30 269 30.58 0.0054
2022-04-20 2022-03-31 13F ALKERMES SHS G01767105 7,828 7,828 206 0.0034
2022-01-31 2021-12-31 13F ALKERMES SHS G01767105 0 -8,217 -100.00 0 -100.00
2021-11-05 2021-09-30 13F ALKERMES SHS G01767105 8,217 -788 -8.75 253 14.48 0.0048
2021-08-12 2021-06-30 13F ALKERMES SHS G01767105 9,005 9,005 221 0.0041
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.