STX in the 13F filings
Seagate Technology Hldngs PL · CUSIP G7997R103
- Quarter end
- 31 Mar 2024
- the date the book describes
- Filed
- 5 Nov 2026
- latest of these filings; the earliest 6 May 2024
- Managers listing it
- 17
- at least, of 95 tracked, among listed positions
- Comparable managers
- 93
- filed both Q4 2023 and Q1 2024; 10 listed it in both
- Shares listed
- 36,280,351
- combined, among listed positions
- Reported value
- $3.4bn
- combined, at the quarter end
Among the 93 comparable managers: 10 buyers (opened or added shares) and 8 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.
Managers listing STX in Q1 2024
17 of 17 holders
Largest increases and reductions, by shares
Increases
- Arrowstreet Capital LPnew position · 1,130,459 shares now+1,130,459
- Balyasny Asset Management LLCnew position · 379,232 shares now+379,232
- Woodline Partners LPexisting position · 308,517 shares now+180,515
- Quantbot Technologies LPnew position · 68,587 shares now+68,587
- Maverick Capital Ltdexisting position · 1,166,616 shares now+62,883
Reductions
- Holocene Advisors LPexisting position · 389,002 shares now-1,907,398
- Fidelity (FMR LLC)existing position · 11,948,303 shares now-1,575,107
- Capital Research Global Investorsexisting position · 15,264,663 shares now-1,350,221
- Wellington Management Group LLPexisting position · 4,005,524 shares now-334,409
- Moore Capital Management LPexisting position · 167,749 shares now-97,251
New positions and exits
New (5)
Exited (2)
- MFS Investment Managementwas $173m
- ValueAct Holdings LPwas $22m
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2021 | 8 | $2.9bn | n.a. | n.a. |
| Q3 2021 | 9 | $2.4bn | n.a. | n.a. |
| Q4 2021 | 10 | $3.3bn | n.a. | n.a. |
| Q1 2022 | 10 | $2.3bn | n.a. | n.a. |
| Q2 2022 | 12 | $2.0bn | n.a. | n.a. |
| Q3 2022 | 10 | $1.5bn | n.a. | n.a. |
| Q4 2022 | 11 | $1.9bn | n.a. | n.a. |
| Q1 2023 | 10 | $2.6bn | n.a. | n.a. |
| Q2 2023 | 14 | $2.4bn | n.a. | n.a. |
| Q3 2023 | 16 | $3.1bn | n.a. | n.a. |
| Q4 2023 | 14 | $3.8bn | 7 | 8 |
| Q1 2024 | 17 | $3.4bn | 10 | 8 |
| Q2 2024 | 17 | $3.4bn | 10 | 7 |
| Q3 2024 | 21 | $3.5bn | 15 | 9 |
| Q4 2024 | 21 | $2.8bn | 16 | 6 |
| Q1 2025 | 12 | $2.5bn | 7 | 8 |
| Q2 2025 | 24 | $4.1bn | 18 | 7 |
| Q3 2025 | 20 | $4.5bn | 8 | 13 |
| Q4 2025 | 21 | $7.8bn | 18 | 20 |
| Q1 2026 | 30 | $13.7bn | 27 | 13 |
| Q2 2026 | 45 | $40.7bn | 32 | 17 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
STX and NVDA →STX and AVGO →STX and MU →Choose a stock to compare with STX →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own STX, latest filings →Back to the 13F Explorer →