13F Insight
DOSSIER · 13F Holders · Q4 2025Inflation hedgeYield
STX 3.5 06/01/28

SEAGATE HDD CAYMAN

62 institutions still hold SEAGATE HDD CAYMAN as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 81180WBL4·62 13F holders·last filed Dec 31, 2025
Market cap
—
▲ 9.1%
vs prior quarter
13F value held
$2.0B
51.0% inst. owned
of float
Holders
62
-129 QoQ
filers reporting
Activity
+50 / −105
+859 added · −932 reduced
this quarter
Concentration
16.56%
CITADEL ADVISORS LLC #1
top holder share
AI Holders Summary · Q4 2025

62 institutions reported STX 3.5 06/01/28 in Q4 2025. CITADEL ADVISORS LLC leads at 16.6% of the visible book. -129 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
CITADEL ADVISORS LLC
CIK 0001423053
$336M100.0M0.05%Q4 202502
VOYA INVESTMENT MANAGEMENT LLC
CIK 0001068837
$239M50.4M0.25%Q1 202603
Aequim Alternative Investments LP
CIK 0001728201
$206M43.3M3.99%Q1 202604
BANK OF MONTREAL /CAN/
CIK 0000927971
$179M39.8M0.07%Q1 202605
D. E. Shaw & Co., Inc.
CIK 0001009207
$177M52.8M0.10%Q4 202506
Alberta Investment Management Corp
CIK 0001463559· Sovereign
$154M32.5M0.92%Q1 202607
BANK OF NOVA SCOTIA
CIK 0000009631
$133M28.2M0.23%Q1 202608
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$80M16.9M0.06%Q1 202609
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$76M15.9M0.04%Q1 202610
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$65M13.6M1.00%Q1 202611
JPMORGAN CHASE & CO
CIK 0000019617
$56M12.8M0.00%Q1 202612
Calamos Advisors LLC
CIK 0001316507
$51M10.7M0.18%Q1 202613
M&G Plc
CIK 0001802539
$45M9.5M0.23%Q1 202614
STATE STREET CORP
CIK 0000093751
$41M8.6M0.00%Q1 202615
Boussard & Gavaudan Investment Management LLP
CIK 0001614986
$37M8K3.53%Q1 202616
Warberg Asset Management LLC
CIK 0001597506
$36M7.6M6.00%Q1 202617
MACKAY SHIELDS LLC
CIK 0000061227
$32M6.6M1.16%Q1 202618
BlackRock, Inc.
CIK 0002012383
$31M6.5M0.00%Q1 202619
FMR LLC
CIK 0000315066
$29M6.0M0.00%Q1 202620
MANUFACTURERS LIFE INSURANCE COMPANY, THE
CIK 0000928047
$28M5.8M0.02%Q1 2026
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