DOSSIER · 13F Holders · Q2 2026

BIOSIG TECHNOLOGIES INC

5 institutions still hold BIOSIG TECHNOLOGIES INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 09073N900·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$653K
visible holders
Holders
5
filers reporting
Concentration
48.42%
SIMPLEX TRADING, LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported BIOSIG TECHNOLOGIES INC in Q2 2026. SIMPLEX TRADING, LLC leads at 48.4% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
SIMPLEX TRADING, LLC
CIK 0001488542
$316K372K0.00%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$253K297K0.00%Q2 2026
03
IMC-Chicago, LLC
CIK 0001452861· Market maker
$83K97K0.00%Q2 2026
04
Rossby Financial, LCC
CIK 0002056510
$1K3000.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025