Quantum Portfolio Management LLC
Position in STX — Seagate Technology Holdings plc
CIK 2003672
New York, NY
Position in STX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,718,665
+$890,093 QoQ
Shares Held
1,781
-15.8% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.88%
of 13F equity value
Holder Rank
#871
of 1,934 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in STX Over Time
Shares Held
Position Value (USD)
Position in Computer Hardware
Technology · as of Jun 30, 2026Quantum Portfolio Management LLC holds $3,034,075 across 3 Computer Hardware names. STX ranks #1 (56.6% of the industry book) .
All Filings in STX
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,718,665 | 1,781 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $828,572 | 2,115 | Shares | Sole | 2026-05-01 | |
| 2025-12-31 | $563,998 | 2,048 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $483,450 | 2,048 | Shares | Sole | 2025-10-29 | |
| No filing history on record for this holder in this stock. | ||||||