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 464287957·4 13F holders·last filed Mar 31, 2026
Market cap
6.5%
vs prior quarter
13F value held
$5.1B
55.0% inst. owned
of float
Holders
4
+75 QoQ
filers reporting
Activity
+72 / −27
+934 added · −807 reduced
this quarter
Concentration
99.96%
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 100.0% of the visible book. +75 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
SIMPLEX TRADING, LLC
CIK 0001488542
$5.1B34.2M3.43%Q1 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$2M24K0.00%Q1 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$27,0124000.00%Q1 2026
04
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025