13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
STIM

NEURONETICS INC

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

CUSIP 64131A105·106 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.4%
vs prior quarter
13F value held
$56M
48.0% inst. owned
of float
Holders
106
+104 QoQ
filers reporting
Activity
+12 / −13
+867 added · −841 reduced
this quarter
Concentration
47.91%
Madryn Asset Management, LP #1
top holder share
AI Holders Summary · Q1 2026

106 institutions reported STIM in Q1 2026. Madryn Asset Management, LP leads at 47.9% of the visible book. +104 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Madryn Asset Management, LP
CIK 0001787423
$27M18.5M78.50%Q1 202602
UBS Group AG
CIK 0001610520
$4M2.9M0.00%Q1 202603
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$4M2.7M0.01%Q1 202604
BlackRock, Inc.
CIK 0002012383
$3M2.3M0.00%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$3M2.0M0.00%Q1 202606
Lane Generational LLC
CIK 0001901384
$3M1.8M2.05%Q1 202607
FourWorld Capital Management LLC
CIK 0001770525
$2M1.5M1.10%Q1 202608
MASTERS CAPITAL MANAGEMENT LLC
CIK 0001104186
$1M1.0M0.05%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1M959K0.00%Q1 202610
STATE STREET CORP
CIK 0000093751
$1M843K0.00%Q1 202611
Ikarian Capital, LLC
CIK 0001778253
$1M701K0.08%Q1 202612
AdvisorShares Investments LLC
CIK 0001425930
$894,930617K0.16%Q1 202613
WEXFORD CAPITAL LP
CIK 0001048462
$890,030645K0.17%Q4 202514
HighTower Advisors, LLC
CIK 0001462245
$815,437562K0.00%Q1 202615
NORTHERN TRUST CORP
CIK 0000073124· Index
$402,198277K0.00%Q1 202616
MARSHALL WACE, LLP
CIK 0001318757
$394,743286K0.00%Q4 202517
Dauntless Investment Group, LLC
CIK 0002044285
$390,352269K0.26%Q1 202618
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$374,149258K0.00%Q1 202619
GOLDMAN SACHS GROUP INC
CIK 0000886982
$338,705234K0.00%Q1 202620
JBF Capital, Inc.
CIK 0001483864
$338,091233K0.05%Q1 2026
Page 1 of 6
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