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STX · Seagate Technology Holdings plc · Holdings

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$807.57 +1.94 (+0.24%) At close · Oct 7
Market Cap
$207.79B
Shares
226.64M
Volume · Oct 7 4.42M Avg daily vol (3M) 4.63M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,976
Total Value: $203,232,105,280
Total Shares: 211,186,286
Showing 1–100 of 2,070 holdings by value · page 1 of 21

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 1,975 13F filers
Top Holder
7.2%
Sep 2023 → Jun 2026 · range 7.0% – 14.0%
of institutional value
Top 5
26.5%
Sep 2023 → Jun 2026 · range 26.5% – 47.0%
of institutional value
Top 10
41.7%
Sep 2023 → Jun 2026 · range 41.7% – 63.9%
of institutional value
HHI
249
Sep 2023 → Jun 2026 · range 249 – 555
Broadly held
Showing 100 of 2,070
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1137789 CUSIP G7997R103 13F (30d) 52 filings 48 filers Visit website Investor relations