DOSSIER · 13F Holders · Q1 2026

ISHARES TR

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

CUSIP 464287950·5 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$341M
visible holders
Holders
5
filers reporting
Concentration
58.06%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q1 2026

5 institutions reported ISHARES TR in Q1 2026. IMC-Chicago, LLC leads at 58.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$198M1.8M0.07%Q1 2026
02
Taconic Capital Advisors LP
CIK 0001390113
$68M683K29.76%Q1 2026
03
Optiver Holding B.V.
CIK 0001859606· Market maker
$67M701K0.02%Q1 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$8M85K0.02%Q1 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025