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Lantheus

404 hedge funds and large institutions have $5.51B invested in Lantheus in 2026 Q1 according to their latest regulatory filings, with 69 funds opening new positions, 143 increasing their positions, 132 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed

47% more first-time investments, than exits

New positions opened: 69 | Existing positions closed: 47

45% more call options, than puts

Call options by funds: $31.1M | Put options by funds: $21.4M

19% more capital invested

Capital invested by funds: $4.62B → $5.51B (+$893M)

7.03% more ownership

Funds ownership: 104.59%111.62% (+7%)

3% more funds holding

Funds holding: 391404 (+13)

8% more repeat investments, than reductions

Existing positions increased: 143 | Existing positions reduced: 132

38% less funds holding in top 10

Funds holding in top 10: 85 (-3)

Holders
404
Holders Change
+13
Holders Change %
+3.32%
% of All Funds
4.98%
Holding in Top 10
5
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-37.5%
% of All Funds
0.06%
New
69
Increased
143
Reduced
132
Closed
47
Calls
$31.1M
Puts
$21.4M
Net Calls
+$9.71M
Net Calls Change
+$779K
Name Holding Trade Value Shares
Change
Change in
Stake
Citadel Advisors
51
Citadel Advisors
Florida
$21.6M -$25.8M -359,652 -56%
Ameriprise
52
Ameriprise
Minnesota
$20.5M +$3.25M +45,248 +20%
Victory Capital Management
53
Victory Capital Management
Texas
$20.4M +$13.3M +184,855 +218%
Millennium Management
54
Millennium Management
New York
$19.4M +$5.83M +81,194 +47%
DCM
55
Defilade Capital Management
California
$18.9M +$17.9M +249,401 New
Deutsche Bank
56
Deutsche Bank
Germany
$18M +$114K +1,587 +0.7%
Principal Financial Group
57
Principal Financial Group
Iowa
$17.1M -$97.6K -1,359 -0.6%
Fidelity International
58
Fidelity International
Bermuda
$16.4M +$134K +1,861 +0.9%
ECM
59
ExodusPoint Capital Management
New York
$16.4M +$15.5M +216,322 New
RhumbLine Advisers
60
RhumbLine Advisers
Massachusetts
$14.8M -$38.8K -541 -0.3%
Hotchkis & Wiley Capital Management
61
Hotchkis & Wiley Capital Management
California
$14.1M -$2.75M -38,299 -17%
TSW
62
Thompson Siegel & Walmsley
Virginia
$13.4M -$4.13M -57,564 -25%
Retirement Systems of Alabama
63
Retirement Systems of Alabama
Alabama
$13.2M +$123K +1,710 +1%
SCM
64
Sarissa Capital Management
Connecticut
$12.7M -$1.04M -14,531 -8%
Citigroup
65
Citigroup
New York
$12.2M -$257K -3,581 -2%
N
66
Nuveen
North Carolina
$11.1M -$374K -5,215 -3%
Loomis, Sayles & Company
67
Loomis, Sayles & Company
Massachusetts
$10.6M -$1.62M -22,628 -14%
FAM
68
Fred Alger Management
New York
$10.3M +$9.78M +136,254 New
Assenagon Asset Management
69
Assenagon Asset Management
Luxembourg
$10M +$4.33M +60,376 +84%
California Public Employees Retirement System
70
California Public Employees Retirement System
California
$10M +$866K +12,060 +10%
Russell Investments Group
71
Russell Investments Group
United Kingdom
$9.98M +$4.12M +57,330 +77%
Swiss National Bank
72
Swiss National Bank
Switzerland
$9.95M -$215K -3,000 -2%
State of Wisconsin Investment Board
73
State of Wisconsin Investment Board
Wisconsin
$9.59M -$717K -9,994 -7%
IHAM
74
Integral Health Asset Management
New York
$9.48M +$1.79M +25,000 +25%
AllianceBernstein
75
AllianceBernstein
Tennessee
$8.94M +$42.3K +589 +0.4%