13F Insight
DOSSIER · 13F Holders · Q1 2026Cheap mega-capRe-rated

ISHARES INC

10 institutions still hold ISHARES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 464286900·10 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 1.8%
vs prior quarter
13F value held
$1.4B
47.0% inst. owned
of float
Holders
10
-47 QoQ
filers reporting
Activity
+57 / −45
+887 added · −886 reduced
this quarter
Concentration
60.56%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q1 2026

10 institutions reported ISHARES INC in Q1 2026. Optiver Holding B.V. leads at 60.6% of the visible book. -47 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$870M22.7M0.30%Q1 202602
JPMORGAN CHASE & CO
CIK 0000019617
$306M8.3M0.02%Q1 202603
IMC-Chicago, LLC
CIK 0001452861· Market maker
$151M3.9M0.05%Q1 202604
GROUP ONE TRADING LLC
CIK 0000932540
$70M1.8M0.13%Q1 202605
Truffle Hound Capital, LLC
CIK 0001595862
$27M700K6.96%Q1 202606
Marathon Trading Investment Management LLC
CIK 0001572748
$8M200K0.21%Q1 202607
Itau Unibanco Holding S.A.
CIK 0001132597
$4M2K0.09%Q1 202608
Absolute Gestao de Investimentos Ltda.
CIK 0001622610
$720,1718K0.08%Q1 202609
Verde Servicos Internacionais S.A.
CIK 0001629290
$796105K0.24%Q1 202610
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025