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| Fund | Portfolio weight | Shares | Change vs prev. quarter |
|---|---|---|---|
| Deep Track Capital | 3.05% | 4,000,000 | ADDED (+11.4%) |
| Baker Bros. Advisors | 2.63% | 10,012,267 | HELD |
| RTW Investments | 0.75% | 1,672,356 | HELD |
Source: SEC Form 13F filings for the quarter ended Jun 30, 2026. Change labels compare each fund’s 2026 Q2 filing with its previous filing. 13F filings cover long positions only and arrive up to 45 days after quarter-end. Fund counts here aggregate every share class mapped to this ticker; research headlines cite filer counts as they stood at publication, so a count here can differ from a headline by a holder (see Methodology, "How holder counts are counted").
Exited this quarter: Avoro Capital Advisors.
| Institutions holding | 422 of 8,857 filers |
| Long-only filers among them | 421 |
| Change vs 2026 Q1 | +44 net · 406 entered · 362 exited |
| Shares reported, all filers | 177,453,305 |
| Reported value, all filers | $8.9B |
Source: SEC Form 13F data sets — every filer's latest report for the quarter ended Jun 30, 2026, not just the tracked funds above; changes compare with the quarter ended Mar 31, 2026. Share counts and values are summed as reported in the filings (a small number of filers report values in thousands of dollars, so value totals are as-filed sums).
| Shares short · Sep 15, 2026 | 15,156,775 |
| Days to cover | 10.70 |
Shares short at recent settlements — Jun 30, 2026: 17.5M · Jul 15, 2026: 15.0M · Jul 31, 2026: 14.4M · Aug 14, 2026: 14.8M · Aug 31, 2026: 14.7M · Sep 15, 2026: 15.2M.
Source: FINRA Equity Short Interest (biweekly settlement data).
Data unavailable — no Form 4 transactions for this ticker were parsed in the 90 days to Oct 14, 2026.
Data unavailable — no congressional STOCK Act transactions for this ticker were parsed in the current window (as of Oct 3, 2026).
This stock does not currently pass any tracked screen.
Also held by the tracked funds that hold ALKS: TANGO THERAPEUTICS INC (TNGX) · STRUCTURE THERAPEUTICS INC (GPCR) · CYTOKINETICS INC (CYTK) · AVALO THERAPEUTICS INC (AVTX) · Immunovant, Inc. (IMVT) · XENCOR INC (XNCR) · Verastem, Inc. (VSTM) · COMPASS Pathways plc (CMPS) · IMMUNOCORE HOLDINGS PLC-ADR (IMCR) · Guardant Health, Inc. (GH).
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