DOSSIER · 13F Holders · Q2 2026

SEAGATE TECHNOLOGY HLDNGS PL

8 institutions still hold SEAGATE TECHNOLOGY HLDNGS PL as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G7997R903·8 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$792M
visible holders
Holders
8
filers reporting
Concentration
82.23%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

8 institutions reported SEAGATE TECHNOLOGY HLDNGS PL in Q2 2026. IMC-Chicago, LLC leads at 82.2% 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
$651M675K0.16%Q2 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$76M78K0.04%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$55M57K0.08%Q2 2026
04
CMT Capital Markets Trading GmbH
CIK 0001632813
$8M21K0.09%Q1 2026
05
Perigon Wealth Management, LLC
CIK 0001575239
$965K1K0.02%Q2 2026
06
AlphaCore Capital LLC
CIK 0001713662
$767K350.01%Q2 2026
07
OSAIC HOLDINGS, INC.
CIK 0001677044
$79K10.00%Q2 2026
08
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025