Seagate Technology Hldngs Pl (STX) Held by Superinvestors
SEAGATE TECHNOLOGY HLDNGS PL (STX) is currently held by 6 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $1.95B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Lone Pine Capital is currently the largest disclosed institutional shareholder of STX tracked by InsiderSet, reporting ownership valued at approximately $965.11M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $630.56M, representing an estimated loss of -34.66% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed STX value among the investors covered in this analysis. Major shareholders include Lone Pine Capital, Renaissance Technologies LLC, Tiger Global Management, and several other long-term asset managers with concentrated positions in SEAGATE TECHNOLOGY HLDNGS PL (STX).
This page ranks the largest institutional STX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Lone Pine Capital | Stephen Mandel | 5.90% | 1,000,109 | $965,105,185 | $630,558,723 | -$334,546,462 | -34.66% |
| Renaissance Technologies LLC | Jim Simons | 0.61% | 457,353 | $441,345,645 | $288,356,493 | -$152,989,152 | -34.66% |
| Tiger Global Management | Chase Coleman III | 1.15% | 285,100 | $275,121,500 | $179,752,699 | -$95,368,801 | -34.66% |
| Whale Rock Capital Management | Alex Sacerdote | 1.15% | 148,543 | $143,343,995 | $93,654,876 | -$49,689,119 | -34.66% |
| Duquesne Family Office Llc | Stanley Druckenmiller | 2.70% | 122,000 | $117,730,000 | $76,919,780 | -$40,810,220 | -34.66% |
| Sequoia Financial Advisors | 0.05% | 11,139 | $10,748,689 | $7,023,028 | -$3,725,661 | -34.66% |
Frequently asked questions about STX
Who are the largest superinvestors holding STX?
The largest superinvestors holding STX in the latest SEC Form 13F filings include Lone Pine Capital, Renaissance Technologies LLC, Tiger Global Management, Whale Rock Capital Management, and Duquesne Family Office Llc. InsiderSet ranks these superinvestors by their latest reported STX position.
What does the STX superinvestors page include?
This page tracks STX positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. SEAGATE TECHNOLOGY HLDNGS PL (STX) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold STX?
InsiderSet currently tracks 6 superinvestors reporting STX holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own STX.
How much STX stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $1.95B in STX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were STX superinvestor holdings last updated?
The latest STX superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor STX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its STX position after the reporting date.
Are superinvestors buying or selling STX?
Buying and selling can be analyzed by comparing STX positions across consecutive 13F reporting periods. InsiderSet's STX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View STX ownership changes.
How have superinvestor STX holdings changed over time?
InsiderSet tracks STX holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.