STX fund manager activity
SEAGATE TECHNOLOGY HOLDINGS · US. Reported by 15 tracked fund managers in their 13F filings, Q2 2021 to Q2 2026.
Q2 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Dan Sundheim - D1 Capital Partners | New | 30,115 | $29,060,975 | 0.08% | Aug 14, 2026 |
| Stanley Druckenmiller - Duquesne Family Office | Added | 122,000 | $117,730,000 | 2.70% | Aug 14, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 1,214 | $1,171,564 | 0.00% | Aug 4, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 10,760 | $10,383,400 | 0.02% | Aug 14, 2026 |
| Stephen Mandel - Lone Pine Capital | New | 1,000,109 | $965,105,185 | 5.90% | Aug 14, 2026 |
| Lee Ainslie - Maverick Capital | New | 1,210 | $1,167,650 | 0.01% | Aug 14, 2026 |
| Chase Coleman - Tiger Global Management | New | 285,100 | $275,121,500 | 1.15% | Aug 14, 2026 |
| Alex Sacerdote - Whale Rock Capital Management | New | 148,543 | $143,343,995 | 1.15% | Aug 14, 2026 |
Q1 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Stanley Druckenmiller - Duquesne Family Office | New | 50,700 | $19,862,000 | 0.68% | May 15, 2026 |
| John Armitage - Egerton Capital | Sold out | — | — | 0.00% | May 13, 2026 |
| Ken Fisher - Fisher Asset Management | Trimmed | 959 | $375,869 | 0.00% | May 5, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 32,965 | $12,914,368 | 0.04% | May 15, 2026 |