Companies / Alkermes plc.
Alkermes plc.
Nasdaq: ALKSForeign · IFRSCIK 1520262DUBLIN 4
Financials · FY2025
Ownership
167.8M shares outstanding · as of Jul 23, 2026
Ownership
| Institutions | 109.82% | 184,234,844 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 9
View all →| Insider | % of shares | Shares |
|---|---|---|
Cooke ShaneDirector | — | — |
Gaffin David JosephEVP, CLO, Alkermes, Inc. | — | — |
Hopkinson Craig C.EVP R&D, Chief Medical Officer | — | — |
Jackson Blair CurtisEVP, Chief Operating Officer · Director | — | — |
McKeon Brian PDirector | — | — |
Nichols Christian ToddSVP, Chief Commercial Officer | — | — |
Parisi Samuel JosephVP, Finance (Interim PAO) | — | — |
Pops Richard FCEODirector and CEO, Alkermes plc · Director | — | — |
Reed JoshuaSVP, Chief Financial Officer | — | — |
Institutional holders 379
View all →| Holder | Value | % of shares |
|---|---|---|
| $1.53B | 17.43% | |
| $503.85M | 10.73% | |
| $479.97M | 5.46% | |
| $354.03M | 5.97% | |
| $217.83M | 3.67% | |
| $166.67M | 3.55% | |
| $147.91M | 2.49% | |
| $145.06M | 3.09% | |
| $123.47M | 2.63% | |
| $104.98M | 1.77% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Bvf INC/IL 13F manager | New | — | $70.72M | +2.0M | 2,000,000 1.19% of shares | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | — | $-54.44M | -1.9M -100.00% | — | high |
| Q1 2026 as of | First Trust Advisors LP 13F manager | Add | — | $53.56M | +1.5M +104.18% | 2,968,785 1.77% of shares | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | — | $50.47M | +963K +3.41% | 29,235,739 17.43% of shares | high |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Exit | — | $-40.59M | -1.5M -100.00% | — | medium |
| Q2 2026 as of | Victory Capital Management, Inc. 13F manager | Add | — | $31.84M | +608K +196.74% | 916,709 0.55% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Add | — | $30.74M | +869K +669.31% | 999,322 0.60% of shares | medium |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | Trim | — | $-17.95M | -508K -7.61% | 6,160,428 3.67% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Baker Bros. Advisors LP | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| ALKS | — | G01767105 |