13F Insight
DOSSIER · 13F Holders · Q1 2026Mega-capCrowded
STEX

BIOSIG TECHNOLOGIES INC

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

CUSIP 09073N300·69 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 5.2%
vs prior quarter
13F value held
$25M
65.0% inst. owned
of float
Holders
69
+79 QoQ
filers reporting
Activity
+31 / −79
+813 added · −689 reduced
this quarter
Concentration
31.57%
Legacy Wealth Managment, LLC/ID #1
top holder share
AI Holders Summary · Q1 2026

69 institutions reported STEX in Q1 2026. Legacy Wealth Managment, LLC/ID leads at 31.6% of the visible book. +79 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Legacy Wealth Managment, LLC/ID
CIK 0002045082
$8M7.0M3.95%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$4M4.0M0.00%Q1 202603
Yorkville Advisors Global, LP
CIK 0001838613
$4M3.8M2.74%Q1 202604
BlackRock, Inc.
CIK 0002012383
$1M933K0.00%Q1 202605
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1M919K0.00%Q1 202606
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$818,179724K0.00%Q1 202607
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$777,758688K0.00%Q1 202608
Shay Capital LLC
CIK 0001723643
$724,470641K0.06%Q1 202609
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$520,972461K0.00%Q1 202610
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$482,632427K0.00%Q1 202611
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$453,813402K0.00%Q1 202612
Rossby Financial, LCC
CIK 0002056510
$417,393376K0.09%Q1 202613
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$369,600330K0.00%Q1 202614
STATE STREET CORP
CIK 0000093751
$322,830286K0.00%Q1 202615
CITADEL ADVISORS LLC
CIK 0001423053
$300,57699K0.00%Q4 202516
United Capital Management of KS, Inc.
CIK 0001753219
$279,938248K0.04%Q1 202617
WOLVERINE TRADING, LLC
CIK 0000927337
$276,00051K0.00%Q3 202518
Kovitz Investment Group Partners, LLC
CIK 0001665198
$268,842238K0.01%Q1 202619
One68 Global Capital, LLC
CIK 0001755535
$218,004193K0.71%Q1 202620
NORTHERN TRUST CORP
CIK 0000073124· Index
$204,678181K0.00%Q1 2026
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