DOSSIER · 13F Holders · Q2 2026

OPENDOOR TECHNOLOGIES INC

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

CUSIP 683712903·8 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$69M
visible holders
Holders
8
filers reporting
Concentration
56.14%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

8 institutions reported OPENDOOR TECHNOLOGIES INC in Q2 2026. GROUP ONE TRADING LLC leads at 56.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
GROUP ONE TRADING LLC
CIK 0000932540
$39M8.4M0.05%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$21M4.6M0.01%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$9M2.8M0.01%Q2 2026
04
SG Americas Securities, LLC
CIK 0001313360
$60K65K0.00%Q1 2026
05
JPMORGAN CHASE & CO
CIK 0000019617
$16K4K0.00%Q2 2026
06
AlphaCore Capital LLC
CIK 0001713662
$1K200.00%Q2 2026
07
Marathon Trading Investment Management LLC
CIK 0001572748
$4621000.00%Q2 2026
08
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025