DOSSIER · 13F Holders · Q3 2026

TARGA RES CORP

5 institutions still hold TARGA RES CORP as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 87612G951·5 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$29M
visible holders
Holders
5
filers reporting
Concentration
54.73%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q3 2026

5 institutions reported TARGA RES CORP in Q3 2026. GROUP ONE TRADING LLC leads at 54.7% 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
$16M58K0.02%Q3 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$8M30K0.00%Q3 2026
03
Optiver Holding B.V.
CIK 0001859606· Market maker
$4M14K0.00%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$919K3K0.00%Q3 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025