Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in LNTH held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.2M | $620.7M | -1.0% | 12.569% | 0.01% |
| 2 | FARALLON CAPITAL MANAGEMENT LLC | 5.6M | $423.5M | +2.9% | 8.576% | 2.76% |
| 3 | JANUS HENDERSON GROUP PLC | 4.8M | $362.2M | -16.3% | 7.334% | 0.18% |
| 4 | FMR LLC | 4.6M | $350.9M | +7.0% | 7.106% | 0.02% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.2M | $240.8M | β | 4.875% | 0.01% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2.9M | $221.1M | β | 4.476% | 0.01% |
| 7 | STATE STREET CORP | 2.4M | $184.3M | +0.1% | 3.732% | 0.01% |
| 8 | AMERICAN CENTURY COMPANIES INC | 1.8M | $135.1M | +131.6% | 2.736% | 0.07% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $134.0M | +2.3% | 2.712% | 0.01% |
| 10 | MORGAN STANLEY | 1.6M | $124.9M | -6.3% | 2.529% | 0.01% |
| 11 | REINHART PARTNERS, INC. | 1.6M | $118.7M | +0.1% | 2.404% | 3.41% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 1.4M | $104.6M | -2.5% | 2.119% | 0.02% |
| 13 | Swedbank AB | 1.2M | $93.2M | 0.0% | 1.887% | 0.10% |
| 14 | TD ASSET MANAGEMENT INC | 1.1M | $86.0M | +59.2% | 1.741% | 0.07% |
| 15 | Point72 Asset Management, L.P. | 979K | $74.3M | -5.6% | 1.504% | 0.10% |
| 16 | UBS Group AG | 868K | $65.8M | +118.9% | 1.333% | 0.01% |
| 17 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 840K | $63.7M | -10.6% | 1.291% | 0.11% |
| 18 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 828K | $62.8M | 0.0% | 1.272% | 0.74% |
| 19 | NORTHERN TRUST CORP | 805K | $61.1M | +0.9% | 1.236% | 0.01% |
| 20 | WELLINGTON MANAGEMENT GROUP LLP | 769K | $58.3M | +560.7% | 1.181% | 0.01% |
| 21 | MACKENZIE FINANCIAL CORP | 715K | $54.2M | +8.6% | 1.098% | 0.07% |
| 22 | BROWN ADVISORY INC | 688K | $52.2M | β | 1.056% | 0.09% |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 657K | $49.9M | +2.2% | 1.010% | 0.01% |
| 24 | Epoch Investment Partners, Inc. | 650K | $49.3M | +59.4% | 0.998% | 0.30% |
| 25 | Polaris Capital Management, LLC | 617K | $46.8M | +14.7% | 0.948% | 3.83% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in LNTH β a direct measure of their conviction.
Filings activity in LNTH during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new LNTH position in Q1 2026
Institutions that fully closed their LNTH position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 398 | +2.8% | 77.32% | +5.42 pp | $5.26B | +7.5% |
| Q4 2025 | 387 | 4.7% | 71.90% | +19.14 pp | $4.89B | +36% |
| Q3 2025 | 406 | 13% | 52.76% | 39.95 pp | $3.59B | 43% |
| Q2 2025 | 468 | 8.4% | 92.71% | 12.78 pp | $6.31B | 12% |
| Q1 2025 | 511 | +8.0% | 105.49% | +14.60 pp | $7.18B | +16% |
| Q4 2024 | 473 | 3.1% | 90.89% | 11.69 pp | $6.19B | 11% |
| Q3 2024 | 488 | +10% | 102.58% | +26.76 pp | $6.98B | +35% |
| Q2 2024 | 442 | β | 75.82% | β | $5.16B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying LNTH stock.
Based on Q1 2026 13F filings, institutional ownership of Lantheus Holdings, Inc. stands at 77.3%, held across 398 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of LNTH, with approximately 8,183,193 shares worth $0.62B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of LNTH, including Point72 Asset Management, L.P..
Our composite Smart Money Score for LNTH is 60 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
72 institutions opened new positions in LNTH during Q1 2026, while 61 fully exited. 251 added to existing positions and 74 trimmed.
LNTH institutional ownership rose by 5.42 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 53.2% of all reported 13F value in LNTH, and the top 25 account for 72.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Lantheus Holdings, Inc. (LNTH) Institutional Ownership