Who owns SNDK? 13F holders and whale ownership
SNDK is tracked across public portfolios in Whale Analyzer. This page answers who owns SNDK, which top funds are buying SNDK, aggregate disclosed value, and recent position changes based on public data. Leopold Aschenbrenner is the largest reported holder at $724M; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (3 increased, 2 reduced); the stock trades above the aggregate whale cost basis of $151.34. Top tracked holders include Leopold Aschenbrenner, Whale Rock Capital, David Tepper, and Stanley Druckenmiller.
Continue to the live SNDK dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Leopold Aschenbrenner 13F portfolio Situational Awareness LP holdings | $724.4M | 1.1M | Increased |
| Whale Rock Capital 13F portfolio Whale Rock Capital Management holdings | $508.0M | 799.6K | Reduced |
| David Tepper 13F portfolio Appaloosa LP holdings | $178.7M | 281.2K | New |
| Stanley Druckenmiller 13F portfolio Duquesne Family Office holdings | $24.2M | 38.2K | New |
| Robert Robotti 13F portfolio Robotti & Co holdings | $5.9M | 9.3K | Reduced |
Ownership concentration
Reported ownership of SNDK is highly concentrated across tracked institutions.
- Single largest holder: 50.3% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 5 tracked institutions, 3 increased, 2 reduced. Net positioning is net buying.
- Leopold Aschenbrenner — Situational Awareness LP ($724.4M) (▲ 8.2% qoq shares) · avg cost $121.07
- Whale Rock Capital — Whale Rock Capital Management ($508.0M) (▼ 20.3% qoq shares)
- David Tepper — Appaloosa LP ($178.7M) · avg cost $274.08
- Robert Robotti — Robotti & Co ($5.9M) (▼ 51.6% qoq shares)
Whale cost basis vs current price
The aggregate tracked cost basis is $151.34 versus a current price of $2090.71, so SNDK trades above its cost basis (+1281.4%). Average unrealized P&L across tracked holders: 728%.
Sector positioning — Information Technology
SNDK sits within the Information Technology sector alongside 131 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 SNDK dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
- BE whale holders — BLOOM ENERGY CORP
- CRWV whale holders — COREWEAVE INC
- IREN whale holders — IREN LIMITED
- CORZZ whale holders — CORE SCIENTIFIC INC NEW
- APLD whale holders — APPLIED DIGITAL CORP
- RIOT whale holders — RIOT PLATFORMS INC
- CLSKW whale holders — CLEANSPARK INC
- SEI whale holders — SOLARIS ENERGY INFRAS INC
Learn more in Whale Analyzer Academy
Deepen your read on SNDK with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns SNDK stock?
Whale Analyzer tracks 5 public institutional holders of SNDK with a combined reported value of $1.44B. See the holder table above for the largest tracked positions.
Which top funds are buying SNDK?
Tracked institutions were net buying last quarter — 3 increased, 2 reduced. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is SNDK ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is SNDK above or below the whale cost basis?
The aggregate tracked cost basis is $151.34 versus a current price of $2090.71 (+1281.4%).
What does 13F ownership mean for SNDK?
Use the interactive SNDK dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.