DOSSIER · 13F Holders · Q2 2026

RIO TINTO PLC

9 institutions still hold RIO TINTO PLC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 767204900·9 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$129M
visible holders
Holders
9
filers reporting
Concentration
41.39%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q2 2026

9 institutions reported RIO TINTO PLC in Q2 2026. Optiver Holding B.V. leads at 41.4% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$53M562K0.01%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$23M237K0.03%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$21M221K0.01%Q2 2026
04
IMC-Chicago, LLC
CIK 0001452861· Market maker
$16M172K0.00%Q2 2026
05
CIBC Bancorp USA Inc.
CIK 0001711924
$7M75K0.01%Q2 2026
06
RH Tailwind Management, LLC
CIK 0002065331
$5M50K0.46%Q2 2026
07
JPMORGAN CHASE & CO
CIK 0000019617
$3M35K0.00%Q2 2026
08
SG Americas Securities, LLC
CIK 0001313360
$509K70K0.00%Q1 2026
09
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025