STXSeagate Technology
Seagate is a leading provider of mass-capacity data storage, accelerating the world’s ability to harness the full value of data. 10-K, Item 1
- Employees
- 30,000
- Headquarters
- Singapore, U0
- CEO
- William D. Mosley
- Next results
- around Jan 26, 2027
Who owns STX
82% of the shares are held by institutions that file 13Fs; the rest by everyone else.
13F filings are quarterly and up to 45 days old. Insider trades: Form 4 rows coded P (bought) and S (sold) at a price, not grants or plan exercises.
Institutional ownership 13F data can be up to 45 days old
Every 13F-HR filed for the quarter ending Jun 30, 2026, from SEC's Form 13F data sets. A 13F lists the long positions of managers with more than $100M in US stocks. Two managers can report the same shares, so totals can count some shares twice.
| Holder | Shares | Value | % of company | From Mar 31, 2026 |
|---|---|---|---|---|
| BlackRock, Inc. | 15.17M | $14.6B | 6.61% | Added +6.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 14.63M | $14.1B | 6.37% | Added +3.4% |
| STATE STREET CORP | 9.91M | $9.6B | 4.32% | Added +6.3% |
| FMR LLC | 8.15M | $7.9B | 3.55% | Held |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8.00M | $7.7B | 3.48% | Reduced -27.9% |
| Invesco Ltd. | 7.54M | $7.3B | 3.28% | Added +5.0% |
| WCM INVESTMENT MANAGEMENT, LLC | 5.32M | $5.2B | 2.32% | Added +22.4% |
| JPMORGAN CHASE & CO | 5.20M | $5.0B | 2.27% | Reduced -21.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 5.16M | $5.0B | 2.25% | Added +1.9% |
| MORGAN STANLEY | 4.72M | $4.6B | 2.06% | Reduced -0.8% |
| Capital Research Global Investors | 4.33M | $4.2B | 1.88% | Reduced -24.6% |
| Sanders Capital, LLC | 3.49M | $3.4B | 1.52% | Reduced -73.0% |
| GOLDMAN SACHS GROUP INC | 3.44M | $3.3B | 1.50% | Reduced -3.7% |
| NORGES BANK | 3.10M | $3.0B | 1.35% | New |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 2.56M | $2.5B | 1.12% | Added +1.0% |
| WELLINGTON MANAGEMENT GROUP LLP | 2.41M | $2.3B | 1.05% | Added ×28 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.14M | $2.1B | 0.93% | Added +49.2% |
| BANK OF AMERICA CORP /DE/ | 2.12M | $2.0B | 0.92% | Reduced -37.4% |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2.11M | $2.0B | 0.92% | Reduced -41.8% |
| NORTHERN TRUST CORP | 1.90M | $1.8B | 0.83% | Held |
| FRANKLIN RESOURCES INC | 1.80M | $1.7B | 0.78% | Reduced -48.9% |
| Jupiter Topco LLC | 1.61M | $1.6B | 0.70% | New |
| DEUTSCHE BANK AG\ | 1.59M | $1.5B | 0.69% | Reduced -9.5% |
| Legal & General Group Plc | 1.53M | $1.5B | 0.67% | Added +1.1% |
| JANE STREET GROUP, LLC | 1.47M | $1.4B | 0.64% | Added ×75 |
Bought the most shares
- NORGES BANK +3.10M, new
- WELLINGTON MANAGEMENT GROUP LLP +2.33M
- Jupiter Topco LLC +1.61M, new
- JANE STREET GROUP, LLC +1.45M
- EXCHANGE TRADED CONCEPTS, LLC +1.12M
- Capital International Investors +1.03M, new
- LONE PINE CAPITAL LLC +1.00M, new
- WCM INVESTMENT MANAGEMENT, LLC +974K
- BlackRock, Inc. +893K
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP +705K
Sold the most shares
- Sanders Capital, LLC -9.41M
- VANGUARD PORTFOLIO MANAGEMENT LLC -3.10M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC. -1.80M
- FRANKLIN RESOURCES INC -1.72M
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main -1.51M
- JPMORGAN CHASE & CO -1.46M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC -1.44M
- Capital Research Global Investors -1.41M
- BANK OF AMERICA CORP /DE/ -1.27M
- JANUS HENDERSON GROUP PLC -968K, sold out
Superinvestors holding STX 13F data can be up to 45 days old
From the latest 13F-HR of each of the investors followed on Investors. A 13F shows holdings at the end of a quarter and is filed up to 45 days later.
| Investor | Quarter | Shares | Value | % of portfolio | Last quarter |
|---|---|---|---|---|---|
| Stephen Mandel Lone Pine Capital | Jun 30, 2026 | 1.00M | $965.1M | 5.90% | New |
| Chase Coleman Tiger Global Management | Jun 30, 2026 | 285K | $275.1M | 1.15% | New |
| Stanley Druckenmiller Duquesne Family Office | Jun 30, 2026 | 122K | $117.7M | 2.72% | Added +140.6% |
13D filings: owners of more than 5% who may push for change
No Schedule 13D about STX in the last year.
Work on STX in a spreadsheet:
Excel workbook (a sheet per section, ten years by column, charts, links to the filings) ·
CSV.
For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/STX/export.csv") into a cell.