DOSSIER · 13F Holders · Q2 2026

OPEN TEXT CORP

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

CUSIP 683715956·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$1M
visible holders
Holders
5
filers reporting
Concentration
47.04%
SIMPLEX TRADING, LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported OPEN TEXT CORP in Q2 2026. SIMPLEX TRADING, LLC leads at 47.0% 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
$684K31K0.00%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$556K25K0.00%Q2 2026
03
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$201K910.00%Q2 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$13K6000.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025