Seagate Technology Holdings – Investors and Politicians Who Own It
STX
Investors who own it
15 tracked investors, $5.2B in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
Stephen MandelLone Pine Capital, Q2 2026 | $965.1M | 5.90% |
| $805.5M | 0.52% | |
Frank SandsSands Capital Management, Q2 2026 | $695.5M | 2.58% |
| $684.5M | 1.71% | |
Castle Hook PartnersQ2 2026 | $527.2M | 2.42% |
Scott FergusonSachem Head Capital, Q2 2026 | $455.5M | 9.45% |
Anand ParekhAlyeska Investment Group, Q2 2026 | $281.2M | 0.72% |
Chase ColemanTiger Global Management, Q2 2026 | $275.1M | 1.15% |
Ray DalioBridgewater Associates, Q2 2026 | $192.8M | 0.79% |
Alex SacerdoteWhale Rock Capital, Q2 2026 | $143.3M | 1.15% |
Stanley DruckenmillerDuquesne Family Office, Q2 2026 | $117.7M | 2.26% |
Dan SundheimD1 Capital Partners, Q2 2026 | $29.1M | 0.08% |
Barry RitholtzRitholtz Wealth Management, Q2 2026 | $26.8M | 0.40% |
Lee AinslieMaverick Capital, Q2 2026 | $1.2M | 0.01% |
Value Aligned Research AdvisorsCallQ2 2026 | $96.5K | 0.00% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
Lisa C. McClainR-MI · House | $220.7K | 8.56% |
Kevin HernR-OK · House | $87.2K | 0.37% |
Robert P. Bresnahan, Jr.R-PA · House | $23.5K | 0.14% |
Alan ArmstrongR-OK · Senate | $17K | 0.34% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| Stephen Mandel | New | 1,000,109 |
| Frank Sands | Added +36% | 720,741 |
| National Pension Service (Korea) | Added +0.8% | 834,705 |
| Scott Ferguson | New | 472,000 |
| Value Aligned Research Advisors | Reduced −22% | 709,357 |
| Castle Hook Partners | Reduced −2.7% | 546,287 |
| Chase Coleman | New | 285,100 |
| Anand Parekh | Added +133% | 291,439 |
| Eric Mandelblatt | Sold out | 0 |
| Alex Sacerdote | New | 148,543 |
| Stanley Druckenmiller | Added +141% | 122,000 |
| Ray Dalio | Reduced −39% | 199,822 |
| Dan Sundheim | New | 30,115 |
| Barry Ritholtz | Added +2.2% | 27,787 |
| Lee Ainslie | New | 1,210 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
Kevin HernR-OK · House | Sold part$1K–$15K | Sep 15, 2026disclosed Sep 25, 2026 |
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 27, 2026disclosed Jul 21, 2026 |
Julie JohnsonJointD-TX · House | Sold$1K–$15K | Dec 18, 2025disclosed Jan 15, 2026 |
Julie JohnsonJointD-TX · House | Sold part$1K–$15K | Nov 13, 2025disclosed Dec 11, 2025 |
Kevin HernR-OK · House | Sold part$15K–$50K | Oct 28, 2025disclosed Nov 16, 2025 |
Kevin HernR-OK · House | Sold part$15K–$50K | Oct 6, 2025disclosed Nov 16, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$15K–$50K | Sep 8, 2025disclosed Oct 22, 2025 |
Julie JohnsonJointD-TX · House | Sold part$1K–$15K | Aug 14, 2025disclosed Sep 11, 2025 |
Julie JohnsonJointD-TX · House | Sold part$1K–$15K | Jul 29, 2025disclosed Aug 14, 2025 |
Robert P. Bresnahan, Jr.R-PA · House | Sold$1K–$15K | Apr 8, 2025disclosed May 8, 2025 |
Daniel S. GoldmanD-NY · House | Sold$1K–$15K | Jul 12, 2023disclosed Aug 13, 2023 |
Ron WydenSpouseD-OR · Senate | Sold part$15K–$50K | Nov 11, 2022disclosed May 15, 2023 |
Ron WydenSpouseD-OR · Senate | Sold$15K–$50K | Nov 11, 2022disclosed Dec 11, 2022 |
Marjorie Taylor GreeneJointR-GA · House | Bought$1K–$15K | May 19, 2021disclosed Jun 17, 2021 |
Ron WydenSpouseD-OR · Senate | Bought$1K–$15K | Mar 5, 2021disclosed Apr 2, 2021 |
Ron WydenSpouseD-OR · Senate | Bought$1K–$15K | Mar 4, 2021disclosed Apr 2, 2021 |
Ron WydenSpouseD-OR · Senate | Bought$1K–$15K | Feb 26, 2021disclosed Mar 23, 2021 |
Ron WydenSpouseD-OR · Senate | Bought$50K–$100K | Jul 6, 2020disclosed Jul 31, 2020 |
Ron WydenSpouseD-OR · Senate | Bought$15K–$50K | Jul 2, 2020disclosed Jul 31, 2020 |