13F Insight
DOSSIER · 13F Holders · Q1 2026Cheap mega-capRe-rated

SANDISK CORP

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

CUSIP 80004C950·8 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 3.7%
vs prior quarter
13F value held
$1.7B
49.0% inst. owned
of float
Holders
8
-109 QoQ
filers reporting
Activity
+86 / −52
+836 added · −694 reduced
this quarter
Concentration
68.47%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q1 2026

8 institutions reported SANDISK CORP in Q1 2026. IMC-Chicago, LLC leads at 68.5% of the visible book. -109 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$1.2B1.8M0.41%Q1 202602
GROUP ONE TRADING LLC
CIK 0000932540
$252M397K0.48%Q1 202603
SIMPLEX TRADING, LLC
CIK 0001488542
$182M286K0.12%Q1 202604
Alpine Investment Management Ltd
CIK 0001964631
$52M82513.08%Q1 202605
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$41M6500.04%Q1 202606
HRT FINANCIAL LP
CIK 0001475597
$2M10K0.01%Q4 202507
CMT Capital Markets Trading GmbH
CIK 0001632813
$8,45013K0.09%Q1 202608
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025