Who owns AER? 13F holders and whale ownership
AER is tracked across public portfolios in Whale Analyzer. This page answers who owns AER, which top funds are buying AER, aggregate disclosed value, and recent position changes based on public data. Dorsey Asset Management is the largest reported holder at $154M; the top five funds control 100.0% of reported ownership; institutions were net selling last quarter (1 increased, 2 reduced); the stock trades above the aggregate whale cost basis of $88.76. Top tracked holders include Dorsey Asset Management, David Einhorn, and Robert Robotti.
Continue to the live AER dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Dorsey Asset Management 13F portfolio Dorsey Asset Management holdings | $154.1M | 1.1M | Reduced |
| David Einhorn 13F portfolio Greenlight Capital holdings | $18.6M | 250.0K | New |
| Robert Robotti 13F portfolio Robotti & Co holdings | $14.6M | 106.5K | Reduced |
Ownership concentration
Reported ownership of AER is highly concentrated across tracked institutions.
- Single largest holder: 82.3% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 3 tracked institutions, 2 reduced, 1 increased. Net positioning is net selling.
- Dorsey Asset Management — Dorsey Asset Management ($154.1M) (▼ 7.5% qoq shares) · avg cost $88.76
- Robert Robotti — Robotti & Co ($14.6M) (▼ 0.4% qoq shares)
Whale cost basis vs current price
The aggregate tracked cost basis is $88.76 versus a current price of $148.81, so AER trades above its cost basis (+67.6%). Average unrealized P&L across tracked holders: 57%.
Sector positioning — Industrials
AER sits within the Industrials sector alongside 85 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 AER dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
- ASML whale holders — ASML HLDG NV
- SUNB whale holders — SUNBELT RENTALS HOLDINGS INC
- APP whale holders — APPLOVIN CORP
- DHR whale holders — DANAHER CORP DEL
- RPRX whale holders — ROYALTY PHARMA PLC
- SPGI whale holders — S&P GLOBAL INC
- LYV whale holders — LIVE NATION ENTERTAINMENT IN
- META whale holders — META PLATFORMS INC
Learn more in Whale Analyzer Academy
Deepen your read on AER with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns AER stock?
Whale Analyzer tracks 3 public institutional holders of AER with a combined reported value of $187.3M. See the holder table above for the largest tracked positions.
Which top funds are buying AER?
Tracked institutions were net selling last quarter — 2 reduced, 1 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is AER ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is AER above or below the whale cost basis?
The aggregate tracked cost basis is $88.76 versus a current price of $148.81 (+67.6%).
What does 13F ownership mean for AER?
Use the interactive AER dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.