13F Insight
DOSSIER · 13F Holders · Q3 2026

SEAGATE TECHNOLOGY HLDNGS PL

10 institutions still hold SEAGATE TECHNOLOGY HLDNGS PL as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G7997R953·10 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$1.3B
visible holders
Holders
10
filers reporting
Concentration
72.82%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

10 institutions reported SEAGATE TECHNOLOGY HLDNGS PL in Q3 2026. IMC-Chicago, LLC leads at 72.8% 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
$943M1.0M0.20%Q3 202602
SIMPLEX TRADING, LLC
CIK 0001488542
$177M192K0.10%Q3 202603
GROUP ONE TRADING LLC
CIK 0000932540
$121M132K0.17%Q3 202604
JPMORGAN CHASE & CO
CIK 0000019617
$29M32K0.00%Q3 202605
CMT Capital Markets Trading GmbH
CIK 0001632813
$11M28K0.11%Q1 202606
RH Tailwind Management, LLC
CIK 0002065331
$9M10K0.62%Q3 202607
Capital Markets Trading UK LLP
CIK 0001719165
$4M10K0.05%Q1 202608
Focus Partners Wealth
CIK 0001542153
$553K6000.00%Q3 202609
AlphaCore Capital LLC
CIK 0001713662
$275K350.00%Q3 202610
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025