Lantheus
LNTH
392 hedge funds and large institutions have $4.62B invested in Lantheus in 2025 Q4 according to their latest regulatory filings, with 73 funds opening new positions, 110 increasing their positions, 156 reducing their positions, and 94 closing their positions.
300% more funds holding in top 10
Funds holding in top 10: 2 → 8 (+6)
61% more call options, than puts
Call options by funds: $23.5M | Put options by funds: $14.5M
26% more capital invested
Capital invested by funds: $3.66B → $4.62B (+$958M)
0.24% less ownership
Funds ownership: 104.85% → 104.6% (-0.24%)
6% less funds holding
Funds holding: 418 → 392 (-26)
22% less first-time investments, than exits
New positions opened: 73 | Existing positions closed: 94
29% less repeat investments, than reductions
Existing positions increased: 110 | Existing positions reduced: 156
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FCM
Farallon Capital Management
San Francisco,
California
|
+$113M |
| 2 |
Point72 Asset Management
Stamford,
Connecticut
|
+$59M |
| 3 |
DM
Deerfield Management
New York
|
+$48.2M |
| 4 |
FGP
Freestone Grove Partners
San Francisco,
California
|
+$34.6M |
| 5 |
SSCM
Summit Street Capital Management
New York
|
+$23.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$123M |
| 2 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$70.3M |
| 3 |
Janus Henderson Group
London,
|
-$56.9M |
| 4 |
Macquarie Group
Sydney, NSW 2000,
Australia
|
-$53.3M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
-$38.2M |
LNTH Hedge Fund Activity: Q4 2025 in Review
392 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Lantheus (LNTH) for Q4 2025, worth a combined $4.62B — up 26% from $3.66B a quarter earlier.
Sellers outnumbered buyers: 94 funds closed out of LNTH and 73 opened new positions — a net loss of 21 holders — while 156 trimmed existing stakes and 110 added.
The largest buyer was Farallon Capital Management, adding an estimated $113M. The largest seller was Morgan Stanley, cutting an estimated $123M.
- 392 institutional investors held Lantheus (LNTH) as of Q4 2025, down from 418 in Q3 2025.
- Funds reported $4.62B of Lantheus stock for Q4 2025, up 26% quarter-over-quarter.
- 73 funds opened new Lantheus positions in Q4 2025 and 94 closed out, a net change of -21 holders.
- The largest Lantheus buyer in Q4 2025 was Farallon Capital Management, an estimated $113M added.
- The largest Lantheus seller in Q4 2025 was Morgan Stanley, an estimated $123M sold.
Based on aggregated 13F filings for Q4 2025.