Who owns STM? 13F holders and whale ownership
STM is tracked across public portfolios in Whale Analyzer. This page answers who owns STM, which top funds are buying STM, aggregate disclosed value, and recent position changes based on public data. Stanley Druckenmiller is the largest reported holder at $90M; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (1 increased, 0 reduced); the stock trades above the aggregate whale cost basis of $26.44. Top tracked holders include Stanley Druckenmiller.
Continue to the live STM dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Stanley Druckenmiller 13F portfolio Duquesne Family Office holdings | $90.3M | 2.6M | Increased |
Ownership concentration
Reported ownership of STM is highly concentrated across tracked institutions.
- Single largest holder: 100.0% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 1 tracked institutions, 1 increased. Net positioning is net buying.
- Stanley Druckenmiller — Duquesne Family Office ($90.3M) (▲ 237.8% qoq shares) · avg cost $26.44
Whale cost basis vs current price
The aggregate tracked cost basis is $26.44 versus a current price of $71.42, so STM trades above its cost basis (+170.1%). Average unrealized P&L across tracked holders: 146%.
Sector positioning — Other
STM sits within the Other sector alongside 670 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live STM dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
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- YPF whale holders — Ypf Sociedad Anonima
- EWZ whale holders — Ishares Inc
- TBBB whale holders — Bbb Foods Inc
- AA whale holders — Alcoa Corp
- NAMSW whale holders — Newamsterdam Pharma Company
Learn more in Whale Analyzer Academy
Deepen your read on STM with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns STM stock?
Whale Analyzer tracks 1 public institutional holders of STM with a combined reported value of $90.3M. See the holder table above for the largest tracked positions.
Which top funds are buying STM?
Tracked institutions were net buying last quarter — 1 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is STM ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is STM above or below the whale cost basis?
The aggregate tracked cost basis is $26.44 versus a current price of $71.42 (+170.1%).
What does 13F ownership mean for STM?
Use the interactive STM dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.