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Seagate Technology Holdings plc (STX) institutional ownership

Latest close $856.13 Jul 31, 2026
Market cap$183.6B 52-week range SectorTechnology
Funds holding · Q2 2026
0
reported STX position changes
Top owners · Q2 2026
No disclosed owners are available.
Institutional activity · Q2 2026
Activity unavailable
No clean comparison

Seagate Technology Holdings plc (STX) price and institutional activity

Dates

Q2 2026

$0 bought by 0 investors
$0 sold by 0 investors
Bought Sold Totals per quarter; hover a bar for the names.

Seagate Technology Holdings plc (STX) institutional activity · 0

No matching institutional activity. Clear the filters to try again.

Famous investor activity in Seagate Technology Holdings plc (STX)

Seagate Technology Holdings plc (STX) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Lee James Ci · Officer Sell −$491K
Price $905.01 Qty −542 Owned 1K ΔOwn −34.7% Trade date Jul 23, 2026 Filed date Jul 24, 2026
Lee James Ci Officer Sell $905.01 −542 −$491K 1K −34.7% Jul 23, 2026 Jul 24, 2026
Lee James Ci · Officer 2 operations 0
Owned 10K Trade date Jul 22, 2026 Filed date Jul 24, 2026
Lee James Ci Officer 2 operations 0 10K Jul 22, 2026 Jul 24, 2026
Mosley William D. · Director 44 operations −$27M
Price $887.97–$936.36 Qty −30K Owned 312K ΔOwn −8.8% Trade date Jul 1, 2026 Filed date Jul 2, 2026
Mosley William D. Director 44 operations $887.97–$936.36 −30K −$27M 312K −8.8% Jul 1, 2026 Jul 2, 2026
Mosley William D. · Director 2 operations 0
Price $46.23 Owned 125K Trade date Jul 1, 2026 Filed date Jul 2, 2026
Mosley William D. Director 2 operations $46.23 0 125K Jul 1, 2026 Jul 2, 2026
Morris John Christopher · Officer 2 operations −$1.2M
Price $880.19 Qty −1K Owned 12K Trade date Jun 12, 2026 Filed date Jun 15, 2026
Morris John Christopher Officer 2 operations $880.19 −1K −$1.2M 12K Jun 12, 2026 Jun 15, 2026
Teh Ban Seng · Officer Sell −$871K
Price $880.19 Qty −989 Owned 4K Trade date Jun 12, 2026 Filed date Jun 15, 2026
Teh Ban Seng Officer Sell $880.19 −989 −$871K 4K Jun 12, 2026 Jun 15, 2026
Romano Gianluca · Officer Sell −$795K
Price $880.19 Qty −903 Owned 43K Trade date Jun 12, 2026 Filed date Jun 15, 2026
Romano Gianluca Officer Sell $880.19 −903 −$795K 43K Jun 12, 2026 Jun 15, 2026
Mosley William D. · Director Sell −$1.6M
Price $880.19 Qty −2K Owned 328K Trade date Jun 12, 2026 Filed date Jun 15, 2026
Mosley William D. Director Sell $880.19 −2K −$1.6M 328K Jun 12, 2026 Jun 15, 2026
Morris John Christopher · Officer 2 operations 0
Owned 5K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Morris John Christopher Officer 2 operations 0 5K Jun 11, 2026 Jun 15, 2026
Teh Ban Seng · Officer 2 operations 0
Owned 5K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Teh Ban Seng Officer 2 operations 0 5K Jun 11, 2026 Jun 15, 2026
Chong Kian Fatt · Officer 2 operations 0
Owned 3K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Chong Kian Fatt Officer 2 operations 0 3K Jun 11, 2026 Jun 15, 2026
Romano Gianluca · Officer 2 operations 0
Owned 8K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Romano Gianluca Officer 2 operations 0 8K Jun 11, 2026 Jun 15, 2026
Mosley William D. · Director 2 operations 0
Owned 17K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Mosley William D. Director 2 operations 0 17K Jun 11, 2026 Jun 15, 2026
Teh Ban Seng · Officer Sell −$545K
Price $821.86 Qty −663 Owned 4K Trade date Jun 10, 2026 Filed date Jun 11, 2026
Teh Ban Seng Officer Sell $821.86 −663 −$545K 4K Jun 10, 2026 Jun 11, 2026
Morris John Christopher · Officer 2 operations −$471K
Price $821.65–$821.66 Qty −574 Owned 13K Trade date Jun 10, 2026 Filed date Jun 11, 2026
Morris John Christopher Officer 2 operations $821.65–$821.66 −574 −$471K 13K Jun 10, 2026 Jun 11, 2026
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Seagate Technology Holdings plc (STX) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 24.0M
% of shares outstanding 11.5% Filing date Feb 13, 2024
Vanguard Group Inc 24.0M 11.5% Feb 13, 2024
JPMorgan Chase & Co 21.6M
% of shares outstanding 10.3% Filing date Mar 7, 2024
JPMorgan Chase & Co 21.6M 10.3% Mar 7, 2024
Vanguard Capital Management 16.3M
% of shares outstanding 7.5% Filing date Apr 30, 2026
Vanguard Capital Management 16.3M 7.5% Apr 30, 2026
Sanders Capital, LLC
% of shares outstanding 7.4% Filing date Feb 14, 2024
Sanders Capital, LLC 7.4% Feb 14, 2024
BlackRock Inc. 15.3M
% of shares outstanding 7.3% Filing date Feb 6, 2024
BlackRock Inc. 15.3M 7.3% Feb 6, 2024
Capital Research Global Investors 10.0M
% of shares outstanding 4.7% Filing date Nov 12, 2024
Capital Research Global Investors 10.0M 4.7% Nov 12, 2024
FMR LLC 8.7M
% of shares outstanding 4.1% Filing date Nov 12, 2024
FMR LLC 8.7M 4.1% Nov 12, 2024
Clearbridge Investments, LLC 8.4M
% of shares outstanding 3.8% Filing date Feb 9, 2022
Clearbridge Investments, LLC 8.4M 3.8% Feb 9, 2022
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Seagate Technology Holdings plc (STX) ownership FAQ

Who owns STX?

0 reporting institutions disclosed STX position changes in the Q2 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q2 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.