Alkermes plc
US ˙ NasdaqGS ˙ IE00B56GVS15

SecurityALKS / Alkermes plc
InstitutionKBC Group NV
Latest Disclosed Ownership5,106 shares
Latest Disclosed Value $ 181
KBC Group NV ownership in ALKS / Alkermes plc

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 5,106 shares of Alkermes plc (US:ALKS) valued at $180,548 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 5,106 shares of Alkermes plc. The current value of the position is $218,333 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-07 2026-03-31 13F ALKERMES SHS G01767105 5,106 0 0.00 0 0.0005
2026-01-26 2025-12-31 13F ALKERMES SHS G01767105 5,106 0 0.00 0 0.0003
2026-01-20 2025-09-30 13F ALKERMES SHS G01767105 5,106 1,105 27.62 0 0.0004
2025-08-08 2025-06-30 13F ALKERMES SHS G01767105 4,001 -3,175 -44.24 0 0.0003
2025-04-25 2025-03-31 13F ALKERMES SHS G01767105 7,176 0 0.00 0 0.0007
2025-01-22 2024-12-31 13F ALKERMES SHS G01767105 7,176 2,286 46.75 0 0.0006
2024-11-06 2024-09-30 13F ALKERMES SHS G01767105 4,890 774 18.80 0 0.0004
2024-07-17 2024-06-30 13F ALKERMES SHS G01767105 4,116 159 4.02 0 0.0003
2024-05-08 2024-03-31 13F ALKERMES SHS G01767105 3,957 800 25.34 0 0.0003
2024-02-13 2023-12-31 13F ALKERMES SHS G01767105 3,157 0 0.00 0 0.0003
2024-02-15 2023-09-30 13F/A-1 ALKERMES SHS G01767105 3,157 3,157 0 0.0004
2021-08-11 2021-06-30 13F ALKERMES SHS G01767105 0 -1,256 -100.00 0 -100.00
2022-02-14 2021-03-31 13F/A-1 ALKERMES SHS G01767105 1,256 1,256 23 0.0001
2021-04-26 2021-03-31 13F ALKERMES SHS G01767105 1,256 1,256 23 0.0001
2020-05-04 2020-03-31 13F ALKERMES SHS G01767105 0 -5,963 -100.00 0 -100.00
2020-02-11 2019-12-31 13F ALKERMES SHS G01767105 5,963 -10,701 -64.22 122 -62.46 0.0008
2019-11-07 2019-09-30 13F ALKERMES SHS G01767105 16,664 -2,778 -14.29 325 -25.97 0.0024
2019-08-08 2019-06-30 13F/A-1 ALKERMES SHS G01767105 19,442 -939 -4.61 439 -40.99 0.0034
2019-07-30 2019-06-30 13F ALKERMES SHS G01767105 19,442 -3,717 439
2019-08-07 2019-03-31 13F/A-1 ALKERMES SHS G01767105 20,381 -52,220 -71.93 744 -65.27 0.0061
2019-05-10 2019-03-31 13F ALKERMES SHS G01767105 20,381 -52,220 744
2019-01-31 2018-12-31 13F ALKERMES SHS G01767105 72,601 -43,919 -37.69 2,142 -56.68 0.0239
2018-11-14 2018-09-30 13F ALKERMES SHS G01767105 116,520 -36,619 -23.91 4,945 -21.56 0.0374
2018-08-03 2018-06-30 13F ALKERMES SHS G01767105 153,139 -52,770 -25.63 6,304 -47.18 0.0549
2018-08-03 2018-03-31 13F/A-1 ALKERMES SHS G01767105 205,909 -4,362 -2.07 11,934 3.70 0.1104
2018-05-09 2018-03-31 13F ALKERMES SHS G01767105 205,909 -4,362 11,934
2018-08-03 2017-12-31 13F/A-1 ALKERMES SHS G01767105 210,271 -60,144 -22.24 11,508 -16.29 0.0984
2018-02-07 2017-12-31 13F ALKERMES SHS G01767105 210,271 -60,144 11,508
2017-11-13 2017-09-30 13F ALKERMES SHS G01767105 270,415 13,535 5.27 13,748 -7.68 0.1248
2017-08-04 2017-06-30 13F ALKERMES SHS G01767105 256,880 30,914 13.68 14,891 12.65 0.1439
2017-05-10 2017-03-31 13F ALKERMES SHS G01767105 225,966 132,525 141.83 13,219 154.51 0.1193
2017-02-16 2016-12-31 13F ALKERMES SHS G01767105 93,441 79,273 559.52 5,194 678.71 0.0515
2016-11-03 2016-09-30 13F ALKERMES SHS G01767105 14,168 4,457 45.90 667 58.81 0.0079
2016-08-03 2016-06-30 13F ALKERMES SHS G01767105 9,711 -556 -5.42 420 19.66 0.0060
2016-05-11 2016-03-31 13F ALKERMES SHS G01767105 10,267 -12,683 -55.26 351 -80.74 0.0058
2016-02-11 2015-12-31 13F ALKERMES SHS G01767105 22,950 -4,263 -15.67 1,822 14.09 0.0336
2015-11-12 2015-09-30 13F ALKERMES SHS G01767105 27,213 2,874 11.81 1,597 1.98 0.0321
2015-12-16 2015-06-30 13F/A-1 ALKERMES SHS G01767105 24,339 -47,838 -66.28 1,566 -64.42 0.0201
2015-07-31 2015-06-30 13F ALKERMES SHS G01767105 24,339 1,566
2015-12-16 2015-03-31 13F/A-1 ALKERMES SHS G01767105 72,177 60,247 505.00 4,401 530.52 0.0559
2015-04-30 2015-03-31 13F ALKERMES SHS G01767105 72,177 4,401
2015-12-15 2014-12-31 13F/A-1 ALKERMES SHS G01767105 11,930 -40,998 -77.46 698 -69.24 0.0083
2015-02-12 2014-12-31 13F ALKERMES SHS G01767105 11,930 698
2014-10-16 2014-09-30 13F ALKERMES SHS G01767105 52,928 12,119 29.70 2,269 10.47 0.0792
2014-08-01 2014-06-30 13F ALKERMES SHS G01767105 40,809 40,809 882.17 2,054 1,626.05 0.0235
2013-11-06 2013-09-30 13F ALKERMES SHS G01767105 0 -4,155 -100.00 0 -100.00
2013-07-29 2013-06-30 13F ALKERMES SHS G01767105 4,155 4,155 119 0.0022
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.