DOSSIER · 13F Holders · Q2 2026

TRANSOCEAN LTD

7 institutions still hold TRANSOCEAN LTD as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP H8817H900·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$46M
visible holders
Holders
7
filers reporting
Concentration
50.15%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported TRANSOCEAN LTD in Q2 2026. GROUP ONE TRADING LLC leads at 50.1% 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
$23M4.7M0.03%Q2 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$12M2.5M0.01%Q2 2026
03
IMC-Chicago, LLC
CIK 0001452861· Market maker
$8M1.7M0.00%Q2 2026
04
CIBC Bancorp USA Inc.
CIK 0001711924
$2M400K0.00%Q2 2026
05
OSAIC HOLDINGS, INC.
CIK 0001677044
$8K600.00%Q2 2026
06
Ancora Advisors LLC
CIK 0001446114
$6K7000.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025