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 767204950·9 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$121M
visible holders
Holders
9
filers reporting
Concentration
42.56%
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 42.6% 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
$51M541K0.01%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$25M267K0.04%Q2 2026
03
IMC-Chicago, LLC
CIK 0001452861· Market maker
$20M211K0.00%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$15M153K0.01%Q2 2026
05
RH Tailwind Management, LLC
CIK 0002065331
$5M50K0.46%Q2 2026
06
CIBC Bancorp USA Inc.
CIK 0001711924
$2M25K0.00%Q2 2026
07
JPMORGAN CHASE & CO
CIK 0000019617
$2M25K0.00%Q2 2026
08
SG Americas Securities, LLC
CIK 0001313360
$4K17K0.00%Q1 2026
09
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025