Seagate Technology Holdings plc
STXLast close · Oct 16, 2026639.01−51.80 (−7.50%)
Market cap$145.3B
Of the 85 managers this site tracks, 5 held Seagate Technology (STX) at the end of Q2 2026, their latest 13Fs. The largest position by value was Stephen Mandel's, $965.1M; Chase Coleman's ($275.1M) and Bridgewater's ($192.8M) follow. No Schedule 13D or 13G is on file for STX from the activists and large holders the site follows.
Superinvestors holding STX
| Manager | Firm | Quarter | Shares | Value |
|---|---|---|---|---|
| Stephen Mandel | Lone Pine Capital LLC | Q2 2026 | 1M | $965.1M |
| Chase Coleman | Tiger Global Management LLC | Q2 2026 | 285,100 | $275.1M |
| Bridgewater | Bridgewater Associates, LP | Q2 2026 | 199,822 | $192.8M |
| Druckenmiller | Duquesne Family Office LLC | Q2 2026 | 122,000 | $117.7M |
| Lee Ainslie | Maverick Capital Ltd | Q2 2026 | 1,210 | $1.2M |
13D/13G are SEC beneficial-ownership disclosures, triggered only above 5%; a 13F is a quarterly snapshot filed up to 45 days after quarter end. Superinvestor names link to their full portfolios under Investors.