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STX · Seagate Technology Holdings plc

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$850.00 -0.24 (-0.03%) At close · Aug 21
Market Cap
$192.65B
Shares
226.64M

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.

Holders: 1,948
Total Value: $202,435,111,143
Total Shares: 210,358,006

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,948 13F filers · Δ vs Mar 31, 2026
Top Holder
7.2%
Sep 2023 → Jun 2026 · range 7.0% – 14.0%
+0.2 pts
Top 5
26.6%
Sep 2023 → Jun 2026 · range 26.6% – 46.9%
−3.8 pts
Top 10
41.8%
Sep 2023 → Jun 2026 · range 41.8% – 63.9%
−3.6 pts
HHI
251
Sep 2023 → Jun 2026 · range 251 – 555
Broadly held−32

Quarterly Activity

vs Mar 31, 2026
New
579
Increased
621
Decreased
597
Sold Out
100
Unchanged
151
Holder count: +479
Institutional value: +154.8%
Shares held: +3.7%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 2,042
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1137789 CUSIP G7997R103 13F (30d) 1487 filings 1446 filers Visit website Investor relations