Technology · owned by 3 fund managers
Who owns Seagate Technology (STX)?
3 of the 22 fund managers we track hold Seagate Technology, worth $1.4B combined as of Q2 2026. Stephen Mandel has the biggest bet at 5.9% of the portfolio.
Ownership summary
Fund manager owners
3 / 22
2 opened new positions
Combined value
$1.4B
At quarter-end prices
Biggest weight
5.9%
Stephen Mandel
Buyers / sellers
3 / 0
Changes in Q2 2026
Smart money take
Why it matters
When several investors with very different styles own the same company, it’s often worth a closer look. Seagate Technology appears in 3 of our 22 portfolios.
- Largest holder: Stephen Mandel (5.9% of portfolio)
- 3 managers bought or added this quarter
- 0 managers trimmed or sold out
- 3 congressional trades disclosed recently (1 buys, 2 sells)
- Company insiders in Q3 2026: no open-market buys, sold $379M
This is not a recommendation. Do your own research.
Fund managers who own STX
SEC 13F · Q2 2026| Investor | % of portfolio | Activity | Shares | Value |
|---|---|---|---|---|
| Stephen Mandel Lone Pine Capital | 5.90% | New | 1,000,109 | $965M |
| Stanley Druckenmiller Duquesne Family Office | 2.26% | Added | 122,000 | $118M |
| Chase Coleman Tiger Global Management | 1.15% | New | 285,100 | $275M |
Congressional trades in STXAll politician trades
| Member | Type | Amount | Traded | Disclosed |
|---|---|---|---|---|
| R Lisa C. McClain House · MI | Sell | $15,001 – $50,000 | 30 Sep 2026 | 12 Oct 2026 |
| R Kevin Hern House · OK | Sell | $15,001 – $50,000 | 15 Sep 2026 | 25 Sep 2026 |
| R Alan Armstrong Senate · OK | Buy | $1,001 – $15,000 | 27 Mar 2026 | 21 Jul 2026 |
Coming soon · QWERTx Pro
Professionally managed portfolios, built around your life.
We are building QWERTx Pro: portfolios matched to your risk profile and time horizon, managed by experienced financial advisors. Join the waitlist to hear first when it launches.
