Vanguard Group Inc ownership in 8AK / Alkermes plc

Alkermes plc

DE ˙ DB ˙ IE00B56GVS15

35,96 € ↑0,18 (0,50%)

2026-06-03
DEL PRIS

Security	DE:8AK / Alkermes plc
Institution	Vanguard Group Inc
Latest Disclosed Ownership	0 shares
Ownership	0.00%

2026-03-26 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 0 shares of Alkermes plc (DE:8AK). This represents 0.0 percent ownership of the company. In their previous filing dated 2024-11-12 , Vanguard Group Inc had reported owning 18,971,637 shares, indicating a decrease of -100.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2026-03-26	2026-03-26	13G/A	18,971,637	0	-100.00	0.00	-100.00
2024-11-12	2024-11-12	13G/A	18,971,637	18,971,637	0.00	11.52	0.00
2024-11-04	2024-11-04	13G	20,955,454	18,971,637	-9.47	11.52	-8.28
2024-02-13	2024-02-13	13G/A	18,539,078	20,955,454	13.03	12.56	11.35
2023-02-09	2023-02-09	13G/A	16,891,710	18,539,078	9.75	11.28	7.94
2022-02-09	2022-02-09	13G/A	16,600,489	16,891,710	1.75	10.45	0.97
2021-07-12	2021-07-12	13G/A	15,436,476	16,600,489	7.54	10.35	6.70
2021-02-10	2021-02-10	13G/A	14,747,649	15,436,476	4.67	9.70	3.63
2020-02-12	2020-02-12	13G/A	13,925,359	14,747,649	5.90	9.36	4.46
2019-02-11	2019-02-11	13G/A	12,870,554	13,925,359	8.20	8.96	7.18
2018-02-08	2018-02-08	13G/A	11,599,214	12,870,554	10.96	8.36	9.57
2017-02-09	2017-02-09	13G/A	10,453,605	11,599,214	10.96	7.63	9.63
2016-02-10	2016-02-10	13G/A		10,453,605		6.96
2015-02-11	2015-02-11	13G/A		8,831,302		6.03
2014-02-10	2014-02-10	13G/A		7,998,596		5.84
2013-02-22	2013-02-22	13G/A		6,821,380		5.17
2013-02-13	2013-02-13	13G		6,821,380		5.37

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-01-29	2025-12-31	13F	ALKERMES	SHS	G01767105	18,007,364	-172,147	-0.95	503,846	-7.62	0.0073
2025-11-07	2025-09-30	13F	ALKERMES	SHS	G01767105	18,179,511	-323,563	-1.75	545,385	3.02	0.0082
2025-08-11	2025-06-30	13F	ALKERMES	SHS	G01767105	18,503,074	290,400	1.59	529,373	-11.97	0.0086
2025-05-09	2025-03-31	13F	ALKERMES	SHS	G01767105	18,212,674	-283,511	-1.53	601,382	13.05	0.0109
2025-02-11	2024-12-31	13F	ALKERMES	SHS	G01767105	18,496,185	-475,452	-2.51	531,950	0.18	0.0093
2024-11-13	2024-09-30	13F	ALKERMES	SHS	G01767105	18,971,637	-1,028,235	-5.14	531,016	10.17	0.0095
2024-08-13	2024-06-30	13F	ALKERMES	SHS	G01767105	19,999,872	-161,308	-0.80	481,997	-11.68	0.0093
2024-05-10	2024-03-31	13F	ALKERMES	SHS	G01767105	20,161,180	-794,274	-3.79	545,763	-6.11	0.0108
2024-03-11	2023-12-31	13F/A-1	ALKERMES	SHS	G01767105	20,955,454	2,288,185	12.26	581,304	11.18	0.0127
2024-02-14	2023-12-31	13F	ALKERMES	SHS	G01767105	20,955,454	2,288,185		581,304		0.0110
2023-12-18	2023-09-30	13F/A-1	ALKERMES	SHS	G01767105	18,667,269	72,797	0.39	522,870	-10.16	0.0128
2023-11-14	2023-09-30	13F	ALKERMES	SHS	G01767105	18,667,269	72,797		522,870		0.0023
2023-08-14	2023-06-30	13F	ALKERMES	SHS	G01767105	18,594,472	-13,670	-0.07	582,007	10.95	0.0138
2023-07-14	2023-03-31	13F/A-1	ALKERMES	SHS	G01767105	18,608,142	69,064	0.37	524,564	8.29	0.0134
2023-05-15	2023-03-31	13F	ALKERMES	SHS	G01767105	18,608,142	69,064		524,564		0.0028
2023-02-10	2022-12-31	13F	ALKERMES	SHS	G01767105	18,539,078	431,176	2.38	484,426	19.80	0.0132
2022-11-14	2022-09-30	13F	ALKERMES	SHS	G01767105	18,107,902	828,769	4.80	404,350	-21.45	0.0119
2022-08-12	2022-06-30	13F	ALKERMES	SHS	G01767105	17,279,133	486,023	2.89	514,744	16.50	0.0145
2022-05-13	2022-03-31	13F	ALKERMES	SHS	G01767105	16,793,110	-98,600	-0.58	441,828	12.45	0.0105
2022-02-14	2021-12-31	13F	ALKERMES	SHS	G01767105	16,891,710	52,885	0.31	392,902	-24.34	0.0089
2021-11-12	2021-09-30	13F	ALKERMES	SHS	G01767105	16,838,825	238,336	1.44	519,310	27.58	0.0129
2021-08-13	2021-06-30	13F	ALKERMES	SHS	G01767105	16,600,489	731,077	4.61	407,045	37.31	0.0101
2021-05-14	2021-03-31	13F	ALKERMES	SHS	G01767105	15,869,412	432,936	2.80	296,441	-3.74	0.0080
2021-02-12	2020-12-31	13F	ALKERMES	SHS	G01767105	15,436,476	371,721	2.47	307,958	23.37	0.0089
2020-11-16	2020-09-30	13F	ALKERMES	SHS	G01767105	15,064,755	-353,555	-2.29	249,624	-16.57	0.0083
2020-08-14	2020-06-30	13F	ALKERMES	SHS	G01767105	15,418,310	166,782	1.09	299,193	36.04	0.0106
2020-05-15	2020-03-31	13F	ALKERMES	SHS	G01767105	15,251,528	503,879	3.42	219,927	-26.90	0.0094
2020-02-14	2019-12-31	13F	ALKERMES	SHS	G01767105	14,747,649	90,497	0.62	300,852	5.21	0.0103
2019-11-14	2019-09-30	13F	ALKERMES	SHS	G01767105	14,657,152	68,578	0.47	285,960	-13.04	0.0106
2019-08-14	2019-06-30	13F	ALKERMES	SHS	G01767105	14,588,574	239,819	1.67	328,828	-37.20	0.0124
2019-05-15	2019-03-31	13F	ALKERMES	SHS	G01767105	14,348,755	423,396	3.04	523,586	27.41	0.0205
2019-02-14	2018-12-31	13F	ALKERMES	SHS	G01767105	13,925,359	701,214	5.30	410,938	-26.78	0.0185
2018-12-13	2018-09-30	13F/A-2	ALKERMES	SHS	G01767105	13,224,145	196,776	1.51	561,231	4.67	0.0219
2018-11-23	2018-09-30	13F/A-1	ALKERMES	SHS	G01767105	13,224,145	0		561,231		0.0219
2018-11-14	2018-09-30	13F	ALKERMES	SHS	G01767105	13,224,145	196,776		561,231
2018-08-14	2018-06-30	13F	ALKERMES	SHS	G01767105	13,027,369	-79,197	-0.60	536,207	-29.41	0.0224
2018-05-15	2018-03-31	13F	ALKERMES	SHS	G01767105	13,106,566	236,012	1.83	759,655	7.84	0.0332
2018-02-14	2017-12-31	13F	ALKERMES	SHS	G01767105	12,870,554	109,352	0.86	704,405	8.57	0.0308
2017-11-14	2017-09-30	13F	ALKERMES	SHS	G01767105	12,761,202	215,004	1.71	648,780	-10.80	0.0303
2017-08-24	2017-06-30	13F/A-1	ALKERMES	SHS	G01767105	12,546,198	449,563	3.72	727,303	2.78	0.0358
2017-08-11	2017-06-30	13F	ALKERMES	SHS	G01767105	12,546,198	449,563		727,303
2017-05-12	2017-03-31	13F	ALKERMES	SHS	G01767105	12,096,635	497,421	4.29	707,654	9.77	0.0364
2017-02-14	2016-12-31	13F	ALKERMES	SHS	G01767105	11,599,214	363,510	3.24	644,684	22.00	0.0360
2016-11-14	2016-09-30	13F	ALKERMES	SHS	G01767105	11,235,704	185,624	1.68	528,415	10.64	0.0310
2016-08-10	2016-06-30	13F	ALKERMES	SHS	G01767105	11,050,080	343,746	3.21	477,585	30.47	0.0297
2016-05-13	2016-03-31	13F	ALKERMES	SHS	G01767105	10,706,334	252,729	2.42	366,050	-55.89	0.0237
2016-02-08	2015-12-31	13F	ALKERMES	SHS	G01767105	10,453,605	560,868	5.67	829,807	42.97	0.0558
2015-11-12	2015-09-30	13F/A-1	ALKERMES	SHS	G01767105	9,892,737	95,676	0.98	580,407	-7.92	0.0246
2015-11-12	2015-09-30	13F/A-1	ALKERMES	SHS	G01767105	10,175,869	378,808		597,019		0.0254
2015-11-12	2015-09-30	13F	ALKERMES	SHS	G01767105	21,665,174			1,051,109
2015-08-13	2015-06-30	13F	ALKERMES	SHS	G01767105	9,797,061	352,060	3.73	630,342	9.46	0.0426
2015-05-15	2015-03-31	13F/A-1	ALKERMES	SHS	G01767105	9,445,001	613,699	6.95	575,861	11.35	0.0391
2015-05-14	2015-03-31	13F	ALKERMES	SHS	G01767105	9,445,001			575,861
2015-02-12	2014-12-31	13F	ALKERMES	SHS	G01767105	8,831,302	148,153	1.71	517,161	38.93	0.0372
2014-11-12	2014-09-30	13F	ALKERMES	SHS	G01767105	8,683,149	101,413	1.18	372,246	-13.82	0.0290
2014-08-11	2014-06-30	13F	ALKERMES	SHS	G01767105	8,581,736	18,034	0.21	431,919	14.39	0.0340
2014-05-13	2014-03-31	13F	ALKERMES	SHS	G01767105	8,563,702	565,106	7.07	377,574	16.10	0.0318
2014-02-12	2013-12-31	13F	ALKERMES	SHS	G01767105	7,998,596	80,291	1.01	325,222	22.17	0.0286
2013-11-07	2013-09-30	13F	ALKERMES	SHS	G01767105	7,918,305	305,812	4.02	266,214	21.93	0.0260
2013-08-13	2013-06-30	13F	ALKERMES	SHS	G01767105	7,612,493	7,612,493		218,326		0.0229

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.