Seagate Technology STX
$460.99 −$5.54 (-1.19%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $462.99 +0.43%
Open$505.53
Prev close$466.53
Day range$449.28 – $508.00
Volume8.28M
Market cap$105.83B
P/E (TTM)24.2
Dividend yield0.64%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership84.9%-1.24 pts vs. prior quarter
Institutions holding2,313+26 vs. prior quarter
Insider trades (recent)23 buys / 27 sellsNet selling
Short interest3.46% of floatDays to cover 1.4 · as of 15 Oct 2026
Short-sale volume share5.1%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$66.25M (12 inflow days, 8 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 24.5% of shares outstanding.
Largest holders
By investor type
Reported short interest has fallen from 3.54% to 3.46% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Wellington Management Group | Mutual Fund | 2026/Q3 | +2,326,538 | 1.1% |
| Jane Street Group, LLC | Private Company | 2026/Q3 | +1,454,111 | 0.6% |
| Norges Bank Investment Management | Sovereign Wealth Fund | 2026/Q3 | +1,286,062 | 1.4% |
| Exchange Traded Concepts, LLC | Mutual Fund | 2026/Q3 | +1,122,608 | 0.5% |
| Lone Pine Capital LLC | Hedge Fund | 2026/Q3 | +1,000,109 | 0.4% |
| WCM Investment Management | Mutual Fund | 2026/Q3 | +973,611 | 2.3% |
| BlackRock | Mutual Fund | 2026/Q3 | +892,710 | 6.7% |
| Arrowstreet Capital, Limited Partnership | Mutual Fund | 2026/Q3 | +704,934 | 0.9% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +644,750 | 0.3% |
| Janus Henderson Group plc | Mutual Fund | 2026/Q3 | +640,908 | 0.7% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +590,037 | 4.4% |
| Qube Research & Technologies Ltd | Mutual Fund | 2026/Q3 | +551,161 | 0.2% |
| Trivest Advisors Ltd | Hedge Fund | 2026/Q3 | +529,780 | 0.3% |
| Winslow Capital Management, LLC | Mutual Fund | 2026/Q3 | +517,006 | 0.2% |
| Strategic Advisers LLC | Mutual Fund | 2026/Q3 | +512,433 | 0.5% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 23 Oct 2026 | Michael Cannon | Lead Independent Director | Derivative Exercise and Sale | -449 | $630.49 | 21,743 |
| 23 Oct 2026 | Michael Cannon | Lead Independent Director | Derivative Exercise and Retained | +1,419 | – | 21,743 |
| 23 Oct 2026 | Richard Clemmer | Independent Director | Derivative Exercise and Sale | -380 | $630.49 | 34,771 |
| 23 Oct 2026 | Richard Clemmer | Independent Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Richard Clemmer | Independent Director | Derivative Exercise and Retained | +1,200 | – | 34,771 |
| 23 Oct 2026 | Mark Adams | Independent Director | Derivative Exercise and Sale | -380 | $630.49 | 3,246 |
| 23 Oct 2026 | Mark Adams | Independent Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Mark Adams | Independent Director | Derivative Exercise and Retained | +1,200 | – | 3,246 |
| 23 Oct 2026 | Thomas Szlosek | Director | Derivative Exercise and Sale | -380 | $630.49 | 1,558 |
| 23 Oct 2026 | Thomas Szlosek | Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Thomas Szlosek | Director | Derivative Exercise and Retained | +1,200 | – | 1,558 |
| 23 Oct 2026 | Yolanda Conyers | Independent Director | Derivative Exercise and Sale | -380 | $630.49 | 4,551 |
| 23 Oct 2026 | Yolanda Conyers | Independent Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Yolanda Conyers | Independent Director | Derivative Exercise and Retained | +1,200 | – | 4,551 |
| 23 Oct 2026 | Jay Geldmacher | Independent Director | Derivative Exercise and Sale | -380 | $630.49 | 1,423 |
| 23 Oct 2026 | Jay Geldmacher | Independent Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Jay Geldmacher | Independent Director | Derivative Exercise and Retained | +1,200 | – | 1,423 |
| 23 Oct 2026 | Stephanie Schear-Tilenius | Independent Director | Derivative Exercise and Sale | -380 | $630.49 | 11,864 |
| 23 Oct 2026 | Stephanie Schear-Tilenius | Independent Director | Other Derivative Acquisition | +345 | – | 345 |
| 23 Oct 2026 | Stephanie Schear-Tilenius | Independent Director | Derivative Exercise and Retained | +1,200 | – | 11,864 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 7,859,241 | 3.5% | 1.4 |
| 30 Sep 2026 | 6,972,672 | 3.1% | 1.8 |
| 15 Sep 2026 | 9,129,029 | 4.0% | 2.7 |
| 31 Aug 2026 | 8,482,797 | 3.7% | 2.4 |
| 14 Aug 2026 | 8,161,824 | 3.6% | 1.7 |
| 31 Jul 2026 | 8,047,106 | 3.5% | 1.3 |
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