DOSSIER · 13F Holders · Q2 2026

SANDISK CORP

11 institutions still hold SANDISK CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 80004C900·11 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$10.5B
visible holders
Holders
11
filers reporting
Concentration
84.22%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

11 institutions reported SANDISK CORP in Q2 2026. IMC-Chicago, LLC leads at 84.2% 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
$8.8B3.9M2.11%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$847M373K1.19%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$588M259K0.34%Q2 2026
04
Cable Car Capital, LP
CIK 0001699575
$216M95K4.63%Q2 2026
05
CMT Capital Markets Trading GmbH
CIK 0001632813
$4M6K0.04%Q1 2026
06
Marathon Trading Investment Management LLC
CIK 0001572748
$1M5000.04%Q2 2026
07
AlphaCore Capital LLC
CIK 0001713662
$615K100.01%Q2 2026
08
HRT FINANCIAL LP
CIK 0001475597
$451K2K0.00%Q4 2025
09
OSAIC HOLDINGS, INC.
CIK 0001677044
$317K20.00%Q2 2026
10
Timothy G. Youngquist 2020 Irrevocable Trust
CIK 0002109159
$5K1000.00%Q2 2026
11
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025