Institutional Ownership
Lantheus Hldgs Inc
CUSIP 516544103COMLNTHQ1 2026
13D / 13G Filings
39
Schedule 13D/13G on record
Beneficial Filers
9
Distinct reporting persons
Largest Stake
15.8%
Max % of class reported
Institutional Holders
394
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
39 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Janus Henderson Group PLC | 13G/A | 8.6% | 5.71M | SEC |
| 2 | Feb 12, 2026 | Morgan Stanley | 13G/A | 2.5% | 1.64M | SEC |
| 3 | Nov 14, 2025 | Janus Henderson Group PLC | 13G/A | 9.8% | 6.68M | SEC |
| 4 | Nov 7, 2025 | Morgan Stanley | 13G | 5.6% | 3.78M | SEC |
| 5 | Nov 5, 2025 | Fmr LLC | 13G/A | 6.5% | 4.40M | SEC |
| 6 | Aug 14, 2025 | Janus Henderson Group PLC | 13G/A | 10.0% | 6.94M | SEC |
| 7 | Aug 6, 2025 | Fmr LLC | 13G | 7.5% | 5.22M | SEC |
| 8 | Jun 6, 2025 | Janus Henderson Group PLC | 13G/A | 10.1% | 6.96M | SEC |
| 9 | May 14, 2025 | Janus Henderson Group PLC | 13G/A | 9.5% | 6.52M | SEC |
| 10 | Feb 14, 2025 | Janus Henderson Group PLC | 13G/A | 8.9% | 6.20M | SEC |
29 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Lantheus Hldgs Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 8.18M | $620.70M |
| 2 | Farallon Capital Management LLC | 5.58M | $423.51M |
| 3 | Janus Henderson Group PLC | 4.77M | $362.17M |
| 4 | Fmr LLC | 4.63M | $350.92M |
| 5 | State Street Corp | 2.43M | $184.30M |
| 6 | American Century Companies Inc | 1.78M | $135.10M |
| 7 | Geode Capital Management, LLC | 1.77M | $133.97M |
| 8 | Morgan Stanley | 1.65M | $124.88M |
| 9 | Reinhart Partners, LLC. | 1.56M | $118.70M |
| 10 | Dimensional Fund Advisors LP | 1.38M | $104.63M |