ALKSAlkermes plc

$49.15

Who owns ALKS

378 institutions reported holding ALKS for 2026Q1, together 106% of the company, more than the 358 a quarter earlier.

378

Institutions reporting a position · as of 2026Q1 · up from 358 the quarter before

Shares held by institutions
175.5M

Shares held by institutions · 106% of the company · long US equity positions only, as reported on Form 13F

Reported value
$6.18B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
43%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
66
Positions exited
51
Added to
107
Reduced
141
Top 10 holdersof the company
58%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q1378175.5M$6.18B
2025Q4358180.3M$5.05B
2025Q3351169.5M$5.08B
2025Q2345169.1M$4.84B
2025Q1363172.1M$5.68B
2024Q4339167.3M$4.81B
2024Q3334178.8M$5.00B
2024Q2320179.4M$4.32B
2024Q1333176.1M$4.77B
2023Q4298175.4M$4.87B
2023Q3302163.3M$4.57B
2023Q2287160.6M$5.03B
2023Q1263161.6M$4.55B
2022Q4275162.2M$4.24B
2022Q3271159.7M$3.57B
2022Q2271156.6M$4.66B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.28.3M17%$1.00B
VANGUARD GROUP INC18.3M11%$649M
BAKER BROS. ADVISORS LP10.0M6.0%$354M
STATE STREET CORP9.5M5.7%$335M
RENAISSANCE TECHNOLOGIES LLC6.2M3.7%$218M
AMERICAN CENTURY COMPANIES INC6.1M3.7%$215M
PRICE T ROWE ASSOCIATES INC /MD/4.7M2.8%$165M
DIMENSIONAL FUND ADVISORS LP4.5M2.7%$160M
Commodore Capital LP4.2M2.5%$149M
GEODE CAPITAL MANAGEMENT LLC4.2M2.5%$148M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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