Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
2,932 institutional managers reported holding MU for the quarter ended Mar 31, 2026. Together they hold about 72% of shares outstanding; the top 10 hold 38%. 492 opened new positions; 204 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 107.63M | 9.43% | $36.33B | added +0.8% | ≤2013 |
| BlackRock | 103.15M | 9.03% | $34.82B | added +2.4% | ≤2013 |
| State Street | 52.24M | 4.57% | $17.63B | trimmed -1% | ≤2013 |
| Capital Group (American Funds) | 42.05M | 3.68% | $14.19B | trimmed -27.8% | 2020 Q3 |
| FMR (Fidelity) | 32.05M | 2.81% | $10.82B | trimmed -19% | ≤2013 |
| Geode Capital | 27.43M | 2.40% | $9.26B | added +5.5% | ≤2013 |
| PRIMECAP Management | 21.87M | 1.92% | $7.38B | trimmed -11.8% | ≤2013 |
| Morgan Stanley | 16.84M | 1.48% | $5.68B | added +2.7% | ≤2013 |
| UBS | 15.64M | 1.37% | $5.28B | trimmed -9.3% | ≤2013 |
| Goldman Sachs | 12.56M | 1.10% | $4.24B | added +40.8% | ≤2013 |
| Invesco | 12.06M | 1.06% | $4.07B | added +23.4% | ≤2013 |
| SG Americas Securities, LLC | 10.58M | 0.93% | $3.57B | added +147.1% | ≤2013 |
| Northern Trust | 10.40M | 0.91% | $3.51B | trimmed -2.4% | ≤2013 |
| Capital International Investors | 8.93M | 0.78% | $3.01B | trimmed -59.5% | 2019 Q2 |
| Bank OF America CORP /DE/ | 8.04M | 0.70% | $2.71B | trimmed -5.4% | ≤2013 |
| Barclays PLC | 7.77M | 0.68% | $2.62B | trimmed -10.4% | ≤2013 |
| BNY Mellon | 7.44M | 0.65% | $2.51B | trimmed -7.6% | ≤2013 |
| Legal & General Group PLC | 7.37M | 0.65% | $2.49B | added +2.3% | ≤2013 |
| Charles Schwab Investment Management | 6.98M | 0.61% | $2.36B | unchanged | ≤2013 |
| Dimensional Fund Advisors | 6.97M | 0.61% | $2.35B | added +1.3% | ≤2013 |
| VAN ECK Associates CORP | 6.42M | 0.56% | $2.17B | trimmed -16.7% | ≤2013 |
| BNP Paribas Financial Markets | 6.09M | 0.53% | $2.06B | trimmed -0.6% | ≤2013 |
| Amundi | 5.97M | 0.52% | $2.02B | added +19.7% | 2014 Q2 |
| T. Rowe Price | 5.34M | 0.47% | $1.80B | trimmed -8.8% | ≤2013 |
| Hsbc Holdings PLC | 5.27M | 0.46% | $1.78B | added +41.4% | ≤2013 |
| Citigroup INC | 4.76M | 0.42% | $1.61B | added +5.8% | ≤2013 |
| Deutsche Bank AG\ | 4.67M | 0.41% | $1.58B | added +2.7% | ≤2013 |
| Citadel Advisors | 4.60M | 0.40% | $1.55B | added +50.6% | ≤2013 |
| AQR Capital | 4.52M | 0.40% | $1.53B | added +28% | ≤2013 |
| National Bank OF Canada /FI/ | 4.32M | 0.38% | $1.46B | added +26.3% | 2021 Q4 |
| Capital Research Global Investors | 4.16M | 0.36% | $1.40B | trimmed -45.3% | 2017 Q1 |
| Wellington Management | 3.92M | 0.34% | $1.32B | added +10% | ≤2013 |
| Janus Henderson | 3.88M | 0.34% | $1.31B | added +19.5% | ≤2013 |
| D. E. Shaw | 3.66M | 0.32% | $1.23B | added +9.4% | ≤2013 |
| Susquehanna International Group | 3.63M | 0.32% | $1.22B | added +74% | ≤2013 |
| Swiss National Bank | 3.30M | 0.29% | $1.11B | added +7.4% | ≤2013 |
| Ameriprise Financial INC | 3.29M | 0.29% | $1.11B | added +103.3% | ≤2013 |
| Nuveen | 3.27M | 0.29% | $1.10B | trimmed -6.1% | ≤2013 |
| Mitsubishi UFJ Asset Management CO., LTD. | 3.19M | 0.28% | $1.08B | added +6.9% | ≤2013 |
| CalPERS | 3.19M | 0.28% | $1.08B | added +46.2% | ≤2013 |
| Sumitomo Mitsui Trust Group, INC. | 3.08M | 0.27% | $1.04B | trimmed -11.5% | ≤2013 |
| Bank OF Montreal /CAN/ | 2.93M | 0.26% | $988.5M | added +11% | ≤2013 |
| Mirae Asset Global Etfs Holdings LTD. | 2.88M | 0.25% | $973.3M | trimmed -3.8% | 2017 Q1 |
| National Pension Service | 2.88M | 0.25% | $970.8M | trimmed -5.8% | 2014 Q3 |
| Boston Partners | 2.80M | 0.24% | $946.1M | trimmed -20.6% | 2019 Q2 |
| Royal Bank OF Canada | 2.71M | 0.24% | $914.2M | trimmed -10.3% | ≤2013 |
| CPP Investment Board | 2.61M | 0.23% | $881.4M | added +31.6% | ≤2013 |
| Voya Investment Management LLC | 2.53M | 0.22% | $852.4M | trimmed -0.8% | ≤2013 |
| Arrowstreet Capital | 2.48M | 0.22% | $837.6M | trimmed -12% | 2025 Q3 |
| Wells Fargo & COMPANY/MN | 2.45M | 0.21% | $827.0M | unchanged | ≤2013 |
Largest 50 of 2,932 shown; the full ranked, searchable register is at boothcheck.com/holders/MU. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.