Alkermes plc. 13F holders
Of the 44 funds followed here, 7 reported a position in Alkermes plc. in a 13F for the quarter ended 30 June 2026. The largest: Renaissance Technologies, 6.5 million shares worth $338.5 million, 0.5% of its reported book. New this quarter: Millennium Management. Sold out: Bridgewater Associates, Point72 Asset Management.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies | 6,460,928 | $338.5 million | 0.5% | +300,500 | added | 30 June 2026 | 13F |
| Geode Capital Management | 4,477,876 | $234.7 million | 0.0% | +295,609 | added | 30 June 2026 | 13F |
| Norges Bank | 2,156,814 | $113.0 million | 0.0% | held | 30 June 2026 | 13F | |
| Citadel Advisors | 1,891,901 | $99.1 million | 0.0% | -439,383 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 1,134,410 | $59.4 million | 0.0% | -189,337 | trimmed | 30 June 2026 | 13F |
| Two Sigma Investments | 1,038,311 | $54.4 million | 0.0% | +257,628 | added | 30 June 2026 | 13F |
| Millennium Management | 344,595 | $18.1 million | 0.0% | +344,595 | new | 30 June 2026 | 13F |
| Bridgewater Associates | 0 | $0 | 0.0% | -83,806 | exited | 30 June 2026 | 13F |
| Point72 Asset Management | 0 | $0 | 0.0% | -33,000 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 15 May 2026 | 13G/A | T. Rowe Price Associates, Inc. and 1 other | 4.7 million | 2.8% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 28 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 9.6 million | 5.8% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 28 April 2026 | 13G | Vanguard Capital Management and 1 other | 8.7 million | 5.2% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G | Baker Bros. Advisors LP and 7 others | 10.0 million | 6.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 10 November 2025 | 13G | State Street Corporation and 1 other | 8.5 million | 5.2% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 24 August 2026 | 566 | $48.33 | SEC |
| 6 August 2026 | 3,268 | $49.61 | SEC |
| 4 August 2026 | 84 | $49.53 | SEC |
| 3 August 2026 | 19,365 | $48.99 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
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Largest in the window: 19,365 on 3 August 2026. A fail is an operational fact about settlement, not a position.Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to ALKS by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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