Seagate Technology Holdings plc
STX- Exchange
- Nasdaq
- Industry
- Computer Storage Devices
- SEC CIK
- 0001137789
In the last 90 days, Seagate Technology Holdings plc insiders filed 0 open-market purchases and 34 sales; 1,973 institutions reported holding it in 13F filings for Q2 2026, worth $181.1B in total; 5 superinvestors hold it, including Lone Pine Capital and Tiger Global Management.
Superinvestors holding STX, Q2 2026
5 superinvestors report holding Seagate Technology Holdings plc on Form 13F, worth $1.39B in total. Weight is Seagate Technology Holdings plc's share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Lone Pine CapitalStephen Mandel | 5.9% | 1,000,109 | $965.1M | New |
| Tiger Global ManagementChase Coleman | 1.1% | 285,100 | $275.1M | New |
| Duquesne Family OfficeStanley Druckenmiller | 2.7% | 122,000 | $117.7M | Added+140.6% |
| D1 Capital PartnersDan Sundheim | 0.1% | 30,115 | $29.1M | New |
| Maverick CapitalLee Ainslie | <0.1% | 1,210 | $1.17M | New |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of STX each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
5 superinvestors holding at quarter end
Q1 2026
1 superinvestor holding at quarter end
Q4 2025
0 superinvestors holding at quarter end
- Sold out
- Duquesne Family Office
Q3 2025
1 superinvestor holding at quarter end
- Reduced
- Duquesne Family Office (−56.5%)
Q2 2025
1 superinvestor holding at quarter end
- Reduced
- Duquesne Family Office (−10.0%)
- Sold out
- Maverick Capital
Q1 2025
2 superinvestors holding at quarter end
- Reduced
- Duquesne Family Office (−86.0%), Maverick Capital (−75.8%)
Q4 2024
2 superinvestors holding at quarter end
- Reduced
- Duquesne Family Office (−4.7%), Maverick Capital (−94.6%)
Q3 2024
2 superinvestors holding at quarter end
- Reduced
- Duquesne Family Office (−6.5%), Maverick Capital (−59.9%)
Q2 2024
2 superinvestors holding at quarter end
- Added
- Duquesne Family Office (+22.0%)
- Reduced
- Maverick Capital (−6.7%)
Q1 2024
2 superinvestors holding at quarter end
- Added
- Maverick Capital (+5.7%)
- Reduced
- Duquesne Family Office (−32.0%)
- Sold out
- ValueAct Capital
Q4 2023
3 superinvestors holding at quarter end
- Added
- Duquesne Family Office (+131.3%)
- Reduced
- Maverick Capital (−1.1%), ValueAct Capital (−96.6%)
- Sold out
- Baupost Group
Q3 2023
4 superinvestors holding at quarter end
- New
- Duquesne Family Office
- Added
- Maverick Capital (+133.9%)
- Reduced
- ValueAct Capital (−42.8%)
- Sold out
- Viking Global Investors
Q2 2023
4 superinvestors holding at quarter end
- New
- Maverick Capital
- Added
- Baupost Group (+340.9%)
- Reduced
- Viking Global Investors (−42.2%)
Q1 2023
3 superinvestors holding at quarter end
- New
- Baupost Group
- Reduced
- Viking Global Investors (−11.0%)
- Sold out
- Maverick Capital
Q4 2022
3 superinvestors holding at quarter end
Q1 2022
1 superinvestor holding at quarter end
- Reduced
- ValueAct Capital (−13.2%)
Q4 2021
1 superinvestor holding at quarter end
- Reduced
- ValueAct Capital (−10.9%)
Q3 2021
1 superinvestor holding at quarter end
- Sold out
- Maverick Capital
Q2 2021
2 superinvestors holding at quarter end
- Reduced
- ValueAct Capital (−24.5%), Maverick Capital (−34.6%)