Who owns AEIS? 13F holders and whale ownership
AEIS is tracked across public portfolios in Whale Analyzer. This page answers who owns AEIS, which top funds are buying AEIS, aggregate disclosed value, and recent position changes based on public data. Whale Rock Capital is the largest reported holder at $330M; 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 $255.36. Top tracked holders include Whale Rock Capital and Robert Robotti.
Continue to the live AEIS dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Whale Rock Capital 13F portfolio Whale Rock Capital Management holdings | $329.8M | 1.0M | New |
| Robert Robotti 13F portfolio Robotti & Co holdings | $877.9K | 2.7K | Held |
Ownership concentration
Reported ownership of AEIS is highly concentrated across tracked institutions.
- Single largest holder: 99.7% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 2 tracked institutions, 1 increased, 1 held. Net positioning is net buying.
- Whale Rock Capital — Whale Rock Capital Management ($329.8M) · avg cost $255.36
- Robert Robotti — Robotti & Co ($877.9K) (→ 0.0% qoq shares)
Whale cost basis vs current price
The aggregate tracked cost basis is $255.36 versus a current price of $348.11, so AEIS trades above its cost basis (+36.3%). Average unrealized P&L across tracked holders: 23%.
Sector positioning — Energy
AEIS sits within the Energy sector alongside 58 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 AEIS dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
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Learn more in Whale Analyzer Academy
Deepen your read on AEIS with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns AEIS stock?
Whale Analyzer tracks 2 public institutional holders of AEIS with a combined reported value of $330.7M. See the holder table above for the largest tracked positions.
Which top funds are buying AEIS?
Tracked institutions were net buying last quarter — 1 increased, 1 held. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is AEIS ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is AEIS above or below the whale cost basis?
The aggregate tracked cost basis is $255.36 versus a current price of $348.11 (+36.3%).
What does 13F ownership mean for AEIS?
Use the interactive AEIS dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.