Lantheus Holdings, Inc.: which funds bought and sold
Institutions that bought and sold Lantheus Holdings shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 239 institutions that filed 13F reports for both quarters added to or opened positions in Lantheus Holdings, and 173 cut or closed them. Together they added a net 2.3M shares, +3.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 2.9M shares (+12.4%); index fund managers were net buyers of 473K shares (+2.3%). 86 opened a new position and 31 sold out entirely.
Bought, Q2 2026 239 institutions, 86 of them new holders Sold, Q2 2026 173 institutions, 31 of them sold out
Net change, all compared +2.3M shares (+3.5%)
Net change, active managers +2.9M shares (+12.4%), 32 bought, 17 sold
Buyers versus sellers
239 bought 74 173 sold
Active managers and hedge funds 32 bought · 17 sold · +2.9M
Index fund managers 10 bought · 1 sold · +473K
Other institutions 197 bought · 155 sold · −1.0M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Assenagon Asset Management S.A. | +1.3M +980.7% | 1.4M | $159M |
| Citadel Advisors LLC Hedge fund | +1.1M +383.7% | 1.4M | $153M |
| American Century Companies Inc Active manager | +1.0M +58.1% | 2.8M | $312M |
| Price T Rowe Associates Inc Active manager | +984K +106.9% | 1.9M | $211M |
| Holocene Advisors, LP Hedge fund | +547K New position | 547K | $60.7M |
| Ameriprise Financial Inc | +349K +129.4% | 619K | $68.7M |
| Goldman Sachs Group Inc | +259K +46.5% | 814K | $90.3M |
| Wellington Management Group LLP Active manager | +244K +31.8% | 1.0M | $112M |
| Brown Advisory Inc Active manager | +228K +33.2% | 916K | $102M |
| Blackrock, Inc. Index funds | +214K +2.6% | 8.4M | $932M |
| Victory Capital Management Inc Active manager | +201K +74.4% | 470K | $52.1M |
| Marshall Wace, LLP Hedge fund | +162K +26.5% | 774K | $85.9M |
| Penn Capital Management Company, LLC Active manager | +154K New position | 154K | $17.1M |
| Pfm Health Sciences, LP Hedge fund | +146K New position | 146K | $16.2M |
| AQR Capital Management LLC Hedge fund | +146K +126.0% | 261K | $28.6M |
| Raymond James Financial Inc | +142K +152.3% | 235K | $26M |
| Jacobs Levy Equity Management, Inc Active manager | +122K +21.1% | 700K | $77.6M |
| New York State Common Retirement Fund | +107K +520.2% | 127K | $14.1M |
| Dimensional Fund Advisors LP | +87K +6.3% | 1.5M | $163M |
| Millennium Management LLC Hedge fund | +81K +31.8% | 336K | $37.3M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Citadel Advisors LLC Hedge fund | +1.1M +383.7% | 1.4M | $153M |
| American Century Companies Inc Active manager | +1.0M +58.1% | 2.8M | $312M |
| Price T Rowe Associates Inc Active manager | +984K +106.9% | 1.9M | $211M |
| Holocene Advisors, LP Hedge fund | +547K New position | 547K | $60.7M |
| Wellington Management Group LLP Active manager | +244K +31.8% | 1.0M | $112M |
| Brown Advisory Inc Active manager | +228K +33.2% | 916K | $102M |
| Victory Capital Management Inc Active manager | +201K +74.4% | 470K | $52.1M |
| Marshall Wace, LLP Hedge fund | +162K +26.5% | 774K | $85.9M |
| Penn Capital Management Company, LLC Active manager | +154K New position | 154K | $17.1M |
| Pfm Health Sciences, LP Hedge fund | +146K New position | 146K | $16.2M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | −746K −16.1% | 3.9M | $430M |
| Mackenzie Financial Corp | −715K Sold out | 0 | — |
| Healthcare Of Ontario Pension Plan Trust Fund | −599K Sold out | 0 | — |
| TD Asset Management Inc | −480K −42.3% | 654K | $72.5M |
| Longaeva Partners L.P. | −355K −92.4% | 29K | $3.2M |
| Point72 Asset Management, L.P. Hedge fund | −344K −35.4% | 630K | $69.9M |
| Alyeska Investment Group, L.P. Hedge fund | −306K Sold out | 0 | — |
| Epoch Investment Partners, Inc. | −263K −40.4% | 387K | $42.9M |
| Balyasny Asset Management L.P. Hedge fund | −262K −48.5% | 278K | $30.8M |
| Bank Of America Corp | −201K −37.9% | 330K | $36.6M |
| Polaris Capital Management, LLC | −193K −31.2% | 425K | $47.1M |
| Nomura Asset Management International Inc. | −169K −20.2% | 671K | $74.4M |
| William Blair Investment Management, LLC Active manager | −167K −41.8% | 233K | $25.8M |
| Portolan Capital Management, LLC | −129K −30.8% | 289K | $32M |
| Invesco Ltd. | −128K −35.3% | 235K | $26M |
| Defilade Capital Management, L.P. | −117K −46.8% | 133K | $14.7M |
| Fred Alger Management, LLC Active manager | −109K −80.1% | 27K | $3M |
| Fil Ltd Active manager | −102K −47.3% | 114K | $12.7M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −100K −28.8% | 247K | $27.4M |
| Sector Gamma As | −93K Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | −746K −16.1% | 3.9M | $430M |
| Point72 Asset Management, L.P. Hedge fund | −344K −35.4% | 630K | $69.9M |
| Alyeska Investment Group, L.P. Hedge fund | −306K Sold out | 0 | — |
| Balyasny Asset Management L.P. Hedge fund | −262K −48.5% | 278K | $30.8M |
| William Blair Investment Management, LLC Active manager | −167K −41.8% | 233K | $25.8M |
| Fred Alger Management, LLC Active manager | −109K −80.1% | 27K | $3M |
| Fil Ltd Active manager | −102K −47.3% | 114K | $12.7M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −100K −28.8% | 247K | $27.4M |
| Renaissance Technologies LLC Hedge fund | −77K Sold out | 0 | — |
| Deerfield Management Company, L.P. Hedge fund | −75K −9.1% | 753K | $83.5M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Holocene Advisors, LPHedge fund | 547K | $60.7M |
| Penn Capital Management Company, LLCActive manager | 154K | $17.1M |
| Pfm Health Sciences, LPHedge fund | 146K | $16.2M |
| Danske Bank A/S | 61K | $6.7M |
| Arrowstreet Capital, Limited PartnershipHedge fund | 27K | $3M |
| Cookson Peirce & Co Inc | 24K | $2.7M |
| Caxton Associates LLPHedge fund | 22K | $2.4M |
| HSBC Holdings PLC | 21K | $2.3M |
| First Eagle Investment Management, LLCActive manager | 16K | $1.8M |
| Brevan Howard Capital Management LPHedge fund | 15K | $1.6M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Mackenzie Financial Corp | 715K | $54.2M |
| Healthcare Of Ontario Pension Plan Trust Fund | 599K | $45.4M |
| Alyeska Investment Group, L.P.Hedge fund | 306K | $23.2M |
| Sector Gamma As | 93K | $7.1M |
| Renaissance Technologies LLCHedge fund | 77K | $5.9M |
| Clark Estates Inc | 42K | $3.2M |
| Toronto Dominion Bank | 14K | $1.1M |
| American Assets Inc | 13K | $763,686 |
| Waterfront Wealth Inc. | 9,843 | $746,592 |
| Vontobel Holding Ltd. | 4,572 | $346,786 |
Who holds the shares
- Institutions reporting
- 463
- Ten largest holders
- 50.3% of 13F-reported shares
- Index fund managers
- 27.7% of 13F-reported shares
- Active managers and hedge funds
- 34.4% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 32 | 17 | 12 | 2 | +2.9M | +12.4% |
| Index fund managers | 10 | 1 | 0 | 0 | +473K | +2.3% |
| Other institutions | 197 | 155 | 74 | 29 | −1.0M | −4.2% |