Alkermes plc
US ˙ NasdaqGS ˙ IE00B56GVS15

SecurityALKS / Alkermes plc
InstitutionY-Intercept (Hong Kong) Ltd
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Y-Intercept (Hong Kong) Ltd closes position in ALKS / Alkermes plc

On April 27, 2026 - Y-Intercept (Hong Kong) Ltd filed a 13F-HR form disclosing ownership of 0 shares of Alkermes plc (US:ALKS) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 79,336 shares of Alkermes plc. The current value of the position is $0 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)
2026-04-27 2026-03-31 13F ALKERMES SHS G01767105 0 -100.00 0
2026-02-13 2025-12-31 13F ALKERMES SHS G01767105 79,336 26,269 49.50 2,220 39.38 0.0497
2025-10-31 2025-09-30 13F ALKERMES SHS G01767105 53,067 -85,366 -61.67 1,592 -59.80 0.0382
2025-08-01 2025-06-30 13F ALKERMES SHS G01767105 138,433 113,094 446.32 3,961 373.68 0.0968
2025-05-06 2025-03-31 13F ALKERMES SHS G01767105 25,339 10,966 76.30 837 102.42 0.0567
2025-02-04 2024-12-31 13F ALKERMES SHS G01767105 14,373 14,373 413 0.0276
2024-11-15 2024-09-30 13F ALKERMES SHS G01767105 0 -21,631 -100.00 0 -100.00
2024-08-14 2024-06-30 13F ALKERMES SHS G01767105 21,631 -37,779 -63.59 521 -67.60 0.0286
2024-05-10 2024-03-31 13F ALKERMES SHS G01767105 59,410 59,410 1,608 0.1212
2024-02-13 2023-12-31 13F ALKERMES SHS G01767105 0 -46,893 -100.00 0 -100.00
2023-11-14 2023-09-30 13F ALKERMES SHS G01767105 46,893 35,408 308.30 1,313 265.74 0.1284
2023-08-14 2023-06-30 13F ALKERMES SHS G01767105 11,485 11,485 359 0.0380
2023-02-14 2022-12-31 13F ALKERMES SHS G01767105 0 0 0 0.0000
2023-02-14 2022-09-30 13F ALKERMES SHS G01767105 0 -11,268 -100.00 0 -100.00
2022-08-08 2022-06-30 13F ALKERMES SHS G01767105 11,268 11,268 336 0.0442
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.