Who owns MAT? 13F holders and whale ownership
MAT is tracked across public portfolios in Whale Analyzer. This page answers who owns MAT, which top funds are buying MAT, aggregate disclosed value, and recent position changes based on public data. PRIMECAP Management is the largest reported holder at $432M; the top five funds control 100.0% of reported ownership; institutions were net selling last quarter (1 increased, 1 reduced); the stock trades below the aggregate whale cost basis of $15.38. Top tracked holders include PRIMECAP Management and Mason Hawkins.
Continue to the live MAT dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| PRIMECAP Management 13F portfolio PRIMECAP Management Company holdings | $431.5M | 29.7M | Reduced |
| Mason Hawkins 13F portfolio Southeastern Asset Management holdings | $186.2M | 12.8M | Increased |
Ownership concentration
Reported ownership of MAT is highly concentrated across tracked institutions.
- Single largest holder: 69.9% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 2 tracked institutions, 1 reduced, 1 increased. Net positioning is net selling.
- PRIMECAP Management — PRIMECAP Management Company ($431.5M) (▼ 0.4% qoq shares) · avg cost $15.26
- Mason Hawkins — Southeastern Asset Management ($186.2M) (▲ 49.5% qoq shares) · avg cost $15.68
Whale cost basis vs current price
The aggregate tracked cost basis is $15.38 versus a current price of $13.98, so MAT trades below its cost basis (-9.1%). Average unrealized P&L across tracked holders: -4%.
Sector positioning — Consumer Discretionary
MAT sits within the Consumer Discretionary sector alongside 61 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 MAT dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
- LLY whale holders — ELI LILLY & CO
- MU whale holders — MICRON TECHNOLOGY INC
- GOOGL whale holders — ALPHABET INC
- AZN whale holders — ASTRAZENECA PLC
- KLAC whale holders — KLA CORP
- INTC whale holders — INTEL CORP
- AMGN whale holders — AMGEN INC
- NVDA whale holders — NVIDIA CORPORATION
Learn more in Whale Analyzer Academy
Deepen your read on MAT with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns MAT stock?
Whale Analyzer tracks 2 public institutional holders of MAT with a combined reported value of $617.7M. See the holder table above for the largest tracked positions.
Which top funds are buying MAT?
Tracked institutions were net selling last quarter — 1 reduced, 1 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is MAT ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is MAT above or below the whale cost basis?
The aggregate tracked cost basis is $15.38 versus a current price of $13.98 (-9.1%).
What does 13F ownership mean for MAT?
Use the interactive MAT dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.