13F Insight
DOSSIER · 13F Holders · Q1 2026
LNTH 2.625 12/15/27

LANTHEUS HLDGS INC

71 institutions still hold LANTHEUS HLDGS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 516544AB9·71 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$581M
visible holders
Holders
71
filers reporting
Concentration
10.52%
MACKAY SHIELDS LLC #1
top holder share
AI Holders Summary · Q1 2026

71 institutions reported LNTH 2.625 12/15/27 in Q1 2026. MACKAY SHIELDS LLC leads at 10.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
MACKAY SHIELDS LLC
CIK 0000061227
$61M50.9M2.24%Q1 202602
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$56M46.4M0.54%Q1 202603
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$52M43.0M0.80%Q1 202604
ADVENT CAPITAL MANAGEMENT /DE/
CIK 0001097278
$48M39.9M1.33%Q1 202605
CAMDEN ASSET MANAGEMENT L P /CA
CIK 0000903944
$45M37.9M1.55%Q1 202606
BRIGADE CAPITAL MANAGEMENT, LP
CIK 0001421306
$43M37.2M12.85%Q4 202507
DeepCurrents Investment Group LLC
CIK 0001754535
$37M30.5M1.19%Q1 202608
M&G Plc
CIK 0001802539
$36M30.2M0.19%Q1 202609
READYSTATE ASSET MANAGEMENT LP
CIK 0001900923
$34M29.5M1.37%Q4 202510
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 0001009258
$29M25.3M0.37%Q4 202511
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$19M15.4M0.00%Q1 202612
Calamos Advisors LLC
CIK 0001316507
$18M15.0M0.06%Q1 202613
Wellesley Asset Management
CIK 0001533551
$17M14.4M1.82%Q1 202614
BANK OF AMERICA CORP /DE/
CIK 0000070858
$16M13.3M0.00%Q1 202615
ABSOLUTE INVESTMENT ADVISERS, LLC
CIK 0001316187
$15M10.6M1.49%Q2 202616
STATE STREET CORP
CIK 0000093751
$15M12.2M0.00%Q1 202617
AMERIPRISE FINANCIAL INC
CIK 0000820027
$12M10.0M0.00%Q1 202618
BlackRock, Inc.
CIK 0002012383
$11M9.1M0.00%Q1 202619
Nuveen, LLC
CIK 0001871926
$9M7.6M0.00%Q1 202620
Lombard Odier Asset Management (Europe) Ltd
CIK 0001535784
$9M7.2M0.47%Q1 2026
Page 1 of 4
51 more holders available. Log in →