Who owns AMRZ? 13F holders and whale ownership
AMRZ is tracked across public portfolios in Whale Analyzer. This page answers who owns AMRZ, which top funds are buying AMRZ, aggregate disclosed value, and recent position changes based on public data. Leon Cooperman is the largest reported holder at $49M; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (2 increased, 0 reduced); the stock trades above the aggregate whale cost basis of $46.68. Top tracked holders include Leon Cooperman and Robert Robotti.
Continue to the live AMRZ dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Leon Cooperman 13F portfolio Omega Advisors holdings | $49.3M | 880.0K | New |
| Robert Robotti 13F portfolio Robotti & Co holdings | $840.3K | 15.0K | Increased |
Ownership concentration
Reported ownership of AMRZ is highly concentrated across tracked institutions.
- Single largest holder: 98.3% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 2 tracked institutions, 2 increased. Net positioning is net buying.
- Leon Cooperman — Omega Advisors ($49.3M) (→ 0.0% qoq shares) · avg cost $46.65
- Robert Robotti — Robotti & Co ($840.3K) (▲ 36.4% qoq shares) · avg cost $48.28
Whale cost basis vs current price
The aggregate tracked cost basis is $46.68 versus a current price of $55.87, so AMRZ trades above its cost basis (+19.7%). Average unrealized P&L across tracked holders: 5%.
Sector positioning — Other
AMRZ 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 AMRZ dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
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- MIR whale holders — MIRION TECHNOLOGIES INC
- FIHL whale holders — FIDELIS INSURANCE HOLDINGS L
- APOS whale holders — APOLLO GLOBAL MANAGEMENT INC
- MP whale holders — MP MATERIALS CORP
- OMF whale holders — ONEMAIN HOLDINGS INC
Learn more in Whale Analyzer Academy
Deepen your read on AMRZ with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns AMRZ stock?
Whale Analyzer tracks 2 public institutional holders of AMRZ with a combined reported value of $50.1M. See the holder table above for the largest tracked positions.
Which top funds are buying AMRZ?
Tracked institutions were net buying last quarter — 2 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is AMRZ ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is AMRZ above or below the whale cost basis?
The aggregate tracked cost basis is $46.68 versus a current price of $55.87 (+19.7%).
What does 13F ownership mean for AMRZ?
Use the interactive AMRZ dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.