13F Insight
DOSSIER · 13F Holders · Q1 2026CyclicalNet sold

ISHARES TR

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

CUSIP 464287907·4 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.9%
vs prior quarter
13F value held
$3.9B
63.0% inst. owned
of float
Holders
4
-74 QoQ
filers reporting
Activity
+57 / −45
+1,024 added · −881 reduced
this quarter
Concentration
99.87%
SIMPLEX TRADING, LLC #1
top holder share
AI Holders Summary · Q1 2026

4 institutions reported ISHARES TR in Q1 2026. SIMPLEX TRADING, LLC leads at 99.9% of the visible book. -74 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
SIMPLEX TRADING, LLC
CIK 0001488542
$3.9B33.4M2.60%Q1 202602
IMC-Chicago, LLC
CIK 0001452861· Market maker
$5M68K0.00%Q1 202603
GROUP ONE TRADING LLC
CIK 0000932540
$206,4253K0.00%Q1 202604
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025