Seagate Technology Ownership | Who Owns Seagate Technology?
Seagate Technology Ownership Summary
Seagate Technology is owned by 83.29% institutional investors, 0.26% insiders, and 16.45% retail investors. Vanguard group is the largest institutional shareholder, holding 13.08% of STX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.15% of its assets in Seagate Technology shares.
STX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Seagate Technology | 83.29% | 0.26% | 16.45% |
| Sector | Technology Stocks | 35.99% | 15.18% | 48.83% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 28.12M | 13.08% | $7.74B |
| Blackrock funding, inc. /de | 14.27M | 6.64% | $5.59B |
| Blackrock | 13.24M | 6.31% | $1.37B |
| Sanders capital | 12.90M | 6.00% | $5.05B |
| State street | 9.32M | 4.34% | $3.66B |
| Fmr | 8.18M | 3.80% | $3.20B |
| Jpmorgan chase | 6.66M | 3.10% | $2.41B |
| Capital research global investors | 5.74M | 2.67% | $2.25B |
| Geode capital management | 5.06M | 2.35% | $1.98B |
| Morgan stanley | 4.76M | 2.21% | $1.86B |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Atalan capital partners, lp | 718.80K | 25.95% | $281.60M |
| Oxbow capital management (hk) | 190.21K | 20.09% | $74.52M |
| Amanah trust | 289.77K | 16.42% | $279.63M |
| Central asset investments & management (hk) | 40.09K | 14.60% | $15.70M |
| Aufman associates | 65.51K | 12.59% | $25.66M |
| Ariose capital management | 27.62K | 11.38% | $26.65M |
| Panoramic capital | 38.48K | 10.58% | $15.07M |
| Rivermont capital management lp | 122.13K | 10.08% | $47.84M |
| Avala global lp | 379.43K | 7.14% | $148.65M |
| Potrero capital research | 28.34K | 6.81% | $11.10M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 8.18M | 0.17% | 4.42M |
| Norges bank | 1.81M | 0.05% | 1.81M |
| Macquarie management | 1.80M | 1.21% | 1.80M |
| Capital research global investors | 5.74M | 0.35% | 1.22M |
| Vanguard fiduciary trust | 1.20M | 0.12% | 1.20M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Sanders capital | 12.90M | 6.02% | -4.28M |
| Blackrock funding, inc. /de | 14.27M | 0.10% | -1.84M |
| Dz bank ag deutsche zentral genossenschafts bank, frankfurt am main | 3.62M | 1.26% | -1.80M |
| Arrowstreet capital, limited partnership | 1.43M | 0.30% | -1.76M |
| Slate path capital lp | 658.87K | 2.41% | -1.69M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.81M | 0.05% | 1.81M | $498.36M |
| Vanguard fiduciary trust | 1.20M | 0.12% | 1.20M | $470.53M |
| Sands capital management | 531.89K | 0.82% | 531.89K | $208.37M |
| Vanguard global advisers | 477.17K | 0.10% | 477.17K | $186.94M |
| Vanguard asset management | 376.31K | 0.13% | 376.31K | $147.42M |
Sold Out
| Holder | Change |
|---|---|
| Atticus wealth management | -1.00 |
| Tortoise investment management | -2.00 |
| Mine & arao wealth creation & management, llc. | -2.00 |
| Plante moran financial advisors | -4.00 |
| Blume capital management | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 1,494 | 11.33% | 179,065,537 | -5.13% | 83 | 1.08% | 775 | 10.09% | 486 | 20.60% |
| Dec 31, 2025 | 843 | -29.46% | 102,334,177 | -47.00% | 47 | 0.57% | 441 | -31.42% | 262 | -19.38% |
| Sep 30, 2025 | 747 | -24.32% | 88,296,573 | -52.90% | 41 | 0.53% | 405 | -25.28% | 205 | -25.72% |
| Jun 30, 2025 | 988 | 18.47% | 197,905,798 | 0.12% | 93 | 1.07% | 543 | 42.52% | 273 | -2.85% |
| Mar 31, 2025 | 24 | -97.18% | 3,143,706 | -98.35% | 1 | 0.02% | 7 | -98.34% | 6 | -97.79% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 7.12M | 3.15% | 178.66K |
| Vanguard US Total Market Shares ETF | 6.64M | 3.14% | 5.13K |
| Vanguard Morn Total Stk Mkt Idx Investor | 7.12M | 3.14% | 178.66K |
| Vanguard 500 Index Investor | 5.83M | 2.58% | 118.16K |
| Invesco QQQ Trust | 4.72M | 2.08% | -706.00 |
| American Funds Income Fund of Amer A | 4.36M | 2.06% | -208.21K |
| Vanguard Windsor™ II Inv | 3.96M | 1.86% | - |
| AZ InvestEd Ivy Science & Tech E | 3.51M | 1.66% | - |
| Macquarie Science and Technology | 3.35M | 1.58% | -168.89K |
| Ivy Science/Technology Composite | 3.26M | 1.55% | -22.63K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jul 23, 2026 | Lee James CI | EVP & CLO | Sell | $490.74K |
| Jul 01, 2026 | MOSLEY WILLIAM D | CEO | Sell | $1.36M |
| Jul 01, 2026 | MOSLEY WILLIAM D | CEO | Sell | $810.10K |
| Jul 01, 2026 | MOSLEY WILLIAM D | CEO | Sell | $811.19K |
| Jul 01, 2026 | MOSLEY WILLIAM D | CEO | Sell | $664.33K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 45 |
| 2026 Q2 | - | 175 |
| 2026 Q1 | - | 58 |
| 2025 Q4 | - | 83 |
| 2025 Q3 | - | 37 |
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