STX in the 13F filings
Seagate Technology Hldngs PL · CUSIP G7997R103
- Quarter end
- 30 Sep 2025
- the date the book describes
- Filed
- 17 Nov 2025
- latest of these filings; the earliest 12 Nov 2025
- Managers listing it
- 20
- at least, of 95 tracked, among listed positions
- Comparable managers
- 95
- filed both Q2 2025 and Q3 2025; 17 listed it in both
- Shares listed
- 19,143,973
- combined, among listed positions
- Reported value
- $4.5bn
- combined, at the quarter end
Among the 95 comparable managers: 8 buyers (opened or added shares) and 13 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 Q3 2025
20 of 20 holders
Largest increases and reductions, by shares
Increases
- D. E. Shaw & Co.existing position · 2,005,386 shares now+316,971
- AQR Capital Management LLCexisting position · 714,285 shares now+230,643
- Bridgewater Associates LPexisting position · 162,108 shares now+136,225
- PDT Partners LLCexisting position · 54,482 shares now+44,673
- Millennium Management LLCexisting position · 776,186 shares now+26,333
Reductions
- Capital Research Global Investorsexisting position · 6,189,644 shares now-1,103,776
- Soroban Capital Partners LPexisting position · 534,364 shares now-883,236
- Voloridge Investment Management LLCexisting position · 56,881 shares now-490,275
- Egerton Capital UK LLPexisting position · 1,592,983 shares now-458,451
- Point72 Asset Management LPexisting position · 535,000 shares now-419,720
New positions and exits
New (0)
No new position among listed positions.
Exited (1)
- Sachem Head Capital Management LPwas $220m
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 →