13F Insight
DOSSIER · 13F Holders · Q1 2026

ISHARES TR

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

CUSIP 464287902·15 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$3.2B
visible holders
Holders
15
filers reporting
Concentration
42.35%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q1 2026

15 institutions reported ISHARES TR in Q1 2026. Optiver Holding B.V. leads at 42.4% 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
$1.4B15.5M0.47%Q1 202602
IMC-Chicago, LLC
CIK 0001452861· Market maker
$899M10.2M0.32%Q1 202603
JPMORGAN CHASE & CO
CIK 0000019617
$718M7.4M0.05%Q1 202604
Skye Global Management LP
CIK 0001675884
$96M1.1M1.93%Q1 202605
HIGHBRIDGE CAPITAL MANAGEMENT LLC
CIK 0000919185
$65M750K2.11%Q1 202606
GROUP ONE TRADING LLC
CIK 0000932540
$60M689K0.11%Q1 202607
HRT FINANCIAL LP
CIK 0001475597
$16M150K0.05%Q4 202508
Marathon Trading Investment Management LLC
CIK 0001572748
$7M80K0.19%Q1 202609
Farther Finance Advisors, LLC
CIK 0001992825
$3M29K0.02%Q2 202610
SG Americas Securities, LLC
CIK 0001313360
$1M1.2M0.00%Q1 202611
Absolute Gestao de Investimentos Ltda.
CIK 0001622610
$336K10K0.04%Q1 202612
CoreCap Advisors, LLC
CIK 0001902501
$259K3K0.01%Q2 202613
Northwest & Ethical Investments L.P.
CIK 0002033536
$23K88K0.00%Q1 202614
OSAIC HOLDINGS, INC.
CIK 0001677044
$1K60.00%Q1 202615
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025