Lantheus
LNTH
418 hedge funds and large institutions have $3.66B invested in Lantheus in 2025 Q3 according to their latest regulatory filings, with 76 funds opening new positions, 103 increasing their positions, 188 reducing their positions, and 128 closing their positions.
30% more call options, than puts
Call options by funds: $25.2M | Put options by funds: $19.4M
12% less funds holding
Funds holding: 475 → 418 (-57)
12.29% less ownership
Funds ownership: 117.14% → 104.85% (-12%)
41% less first-time investments, than exits
New positions opened: 76 | Existing positions closed: 128
45% less capital invested
Capital invested by funds: $6.63B → $3.66B (-$2.98B)
45% less repeat investments, than reductions
Existing positions increased: 103 | Existing positions reduced: 188
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$196M |
| 2 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
+$80M |
| 3 |
PCM
Polaris Capital Management
Boston,
Massachusetts
|
+$39.8M |
| 4 |
CG
Carmignac Gestion
Paris,
France
|
+$31.9M |
| 5 |
Millennium Management
New York
|
+$22M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FCM
Farallon Capital Management
San Francisco,
California
|
-$203M |
| 2 |
Westfield Capital Management
Boston,
Massachusetts
|
-$122M |
| 3 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$89.1M |
| 4 |
Invesco
Atlanta,
Georgia
|
-$59.4M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
-$59.2M |
LNTH Hedge Fund Activity: Q3 2025 in Review
418 of the 7,638 institutional investors tracked by Wall St. Rank reported a position in Lantheus (LNTH) for Q3 2025, worth a combined $3.66B — down 45% from $6.63B a quarter earlier.
Sellers outnumbered buyers: 128 funds closed out of LNTH and 76 opened new positions — a net loss of 52 holders — while 188 trimmed existing stakes and 103 added.
The largest buyer was Morgan Stanley, adding an estimated $196M. The largest seller was Farallon Capital Management, cutting an estimated $203M.
- 418 institutional investors held Lantheus (LNTH) as of Q3 2025, down from 475 in Q2 2025.
- Funds reported $3.66B of Lantheus stock for Q3 2025, down 45% quarter-over-quarter.
- 76 funds opened new Lantheus positions in Q3 2025 and 128 closed out, a net change of -52 holders.
- The largest Lantheus buyer in Q3 2025 was Morgan Stanley, an estimated $196M added.
- The largest Lantheus seller in Q3 2025 was Farallon Capital Management, an estimated $203M sold.
Based on aggregated 13F filings for Q3 2025.