시게이트
STX · US
시게이트 is held by 9 of the 24 tracked investors in their latest 13F filings. The largest position is Norges Bank's at $3.0B, 0.30% of that portfolio. Versus the prior quarter, 2 added, 3 trimmed and 3 bought new. In the last 90 days insiders sold 4 times ($7.0M) and bought 0 times on the open market.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| Norges Bank weight 0.30% · Q2 2026 |
3.0B | ▲ 71% |
| Lone Pine Capital weight 5.90% · Q2 2026 |
965M | New |
| National Pension Service (Korea) weight 0.52% · Q2 2026 |
805M | – |
| Tiger Global Management weight 1.15% · Q2 2026 |
275M | New |
| Bridgewater Associates weight 0.79% · Q2 2026 |
193M | ▼ 39% |
| Korea Investment Corporation weight 0.31% · Q2 2026 |
166M | ▼ 4% |
| Duquesne Family Office weight 2.26% · Q2 2026 |
118M | ▲ 141% |
| Temasek Holdings weight 0.06% · Q2 2026 |
21.7M | ▼ 61% |
| Baillie Gifford weight 0.00% · Q2 2026 |
0.0M | New |
Holding history
13F · shares at each quarter-end| Investor | 26Q2 | 26Q1 | 25Q4 | 25Q3 | 25Q2 | 25Q1 | 24Q4 | 24Q3 |
|---|---|---|---|---|---|---|---|---|
| Norway NBIM | ||||||||
| Lone Pine | · | · | · | · | · | · | · | |
| Korea NPS | · | |||||||
| Tiger Global | · | · | · | · | · | · | · | |
| Bridgewater | · | · | ||||||
| KIC | ||||||||
| Druckenmiller | · | |||||||
| Temasek | · | · | · | · | · | · |
Bar height = shares of 시게이트 relative to that investor's own peak in these quarters (split-adjusted); · = filed but did not hold; blank = no filing kept.
Insider trades (90 days)
SEC Form 4| Insider | Trade | Amount ($) |
|---|---|---|
| Morris John Christopher EVP & CTO · 9/21 |
Sell Plan | 1.1M |
| Teh Ban Seng EVP & Chief Commercial Officer · 9/15 |
Sell Plan | 2.2M |
| Romano Gianluca CFO · 9/10 |
Sell | 1.2M |
| Mosley William D CEO · 9/10 |
Sell | 2.5M |
Questions
Which big investors own 시게이트?
Norges Bank ($3.0B), Lone Pine Capital ($965M), National Pension Service (Korea) ($805M), Tiger Global Management ($275M), Bridgewater Associates ($193M) and 4 more, per their latest 13F filings.
Does Warren Buffett own 시게이트?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own 시게이트?
Yes, $805M as of 2026-06-30 (0.52% of its US holdings).
Have 시게이트 insiders been selling?
4 open-market sales ($7.0M) and 0 purchases in the last 90 days; 2 of the sales were under pre-arranged 10b5-1 plans.
Restated and computed from SEC (13F, 13D/G, Form 4) and DART filings and NPS public data. Filings describe a past date and may differ from current holdings (13F: quarter end, up to 45 days later). Not investment advice.
Sources: SEC EDGAR, DART, data.go.kr (NPS), OpenFIGI. See Methodology for how figures are computed.