Who owns MU? 13F holders and whale ownership
MU is tracked across public portfolios in Whale Analyzer. This page answers who owns MU, which top funds are buying MU, aggregate disclosed value, and recent position changes based on public data. PRIMECAP Management is the largest reported holder at $7.39B; the top five funds control 97.1% of reported ownership; institutions were net buying last quarter (6 increased, 3 reduced); the stock trades above the aggregate whale cost basis of $232.15. Top tracked holders include PRIMECAP Management, Capital Group, NPS Korea, and David Tepper.
Continue to the live MU dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| PRIMECAP Management 13F portfolio PRIMECAP Management Company holdings | $7.39B | 21.9M | Reduced |
| Capital Group 13F portfolio Capital Research Global Investors holdings | $1.40B | 4.2M | Reduced |
| NPS Korea 13F portfolio National Pension Service holdings | $971.6M | 2.9M | Reduced |
| David Tepper 13F portfolio Appaloosa LP holdings | $562.5M | 1.7M | Increased |
| Ray Dalio 13F portfolio Bridgewater Associates holdings | $498.6M | 1.5M | Increased |
| Gavin Baker 13F portfolio Atreides Management holdings | $256.9M | 760.4K | Increased |
| Philippe Laffont 13F portfolio Coatue Management holdings | $56.1M | 165.9K | New |
| Stanley Druckenmiller 13F portfolio Duquesne Family Office holdings | $7.9M | 23.4K | New |
| Leopold Aschenbrenner 13F portfolio Situational Awareness LP holdings | $5.9M | 17.4K | New |
| Ruane, Cunniff & Goldfarb 13F portfolio Ruane, Cunniff & Goldfarb holdings | $730.4K | 2.2K | Held |
Ownership concentration
Reported ownership of MU is highly concentrated across tracked institutions.
- Single largest holder: 66.3% of reported ownership
- Top 5 holders: 97.1%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 10 tracked institutions, 6 increased, 3 reduced, 1 held. Net positioning is net buying.
- PRIMECAP Management — PRIMECAP Management Company ($7.39B) (▼ 11.8% qoq shares)
- Capital Group — Capital Research Global Investors ($1.40B) (▼ 45.3% qoq shares)
- NPS Korea — National Pension Service ($971.6M) (▼ 5.8% qoq shares) · avg cost $51.85
- David Tepper — Appaloosa LP ($562.5M) (▲ 11.0% qoq shares) · avg cost $119.88
- Ray Dalio — Bridgewater Associates ($498.6M) (▲ 65.9% qoq shares) · avg cost $539.36
- Gavin Baker — Atreides Management ($256.9M) (▲ 2.9% qoq shares) · avg cost $233.95
- Philippe Laffont — Coatue Management ($56.1M) · avg cost $895.12
- Stanley Druckenmiller — Duquesne Family Office ($7.9M) · avg cost $943.95
Whale cost basis vs current price
The aggregate tracked cost basis is $232.15 versus a current price of $1132.33, so MU trades above its cost basis (+387.7%). Average unrealized P&L across tracked holders: 242%.
Sector positioning — Information Technology
MU 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 MU dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
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Learn more in Whale Analyzer Academy
Deepen your read on MU with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns MU stock?
Whale Analyzer tracks 10 public institutional holders of MU with a combined reported value of $11.15B. See the holder table above for the largest tracked positions.
Which top funds are buying MU?
Tracked institutions were net buying last quarter — 6 increased, 3 reduced, 1 held. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is MU ownership?
The top five tracked holders report 97.1% of aggregate ownership.
Is MU above or below the whale cost basis?
The aggregate tracked cost basis is $232.15 versus a current price of $1132.33 (+387.7%).
What does 13F ownership mean for MU?
Use the interactive MU dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.