Who owns Micron Technology (MU)
Which tracked institutional funds hold MU, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MU company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MU is one-sided between 2026-Q1 and 2026-Q2: 32 added or opened and 2051 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MU’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 2.3% of its own reported 13F book, while the median holder sizes it at 0.7% of theirs — a 1.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MU divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 2981 tracked filers holding MU, 1740 increased or opened the position and 1231 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MU between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 4
- SANDS CAPITAL MANAGEMENT, LLC$608M
- Pentwater Capital Management LP$21M
- MAVERICK CAPITAL LTD$2M
- Grantham, Mayo, Van Otterloo & Co. LLC$2M
Full exits 2044
- VANGUARD CAPITAL MANAGEMENT LLC$24.7B
- GEODE CAPITAL MANAGEMENT, LLC$9.2B
- VANGUARD PORTFOLIO MANAGEMENT LLC$7.8B
- MORGAN STANLEY$5.7B
- JPMORGAN CHASE & CO$5.1B
- GOLDMAN SACHS GROUP INC$4.2B
Largest adds
- BlackRock, Inc.$86.6B
- STATE STREET CORP$40.1B
- Invesco Ltd.$33.9B
- FMR LLC$20.0B
- Capital World Investors$19.8B
- NORGES BANK$16.3B
Largest trims
- CITADEL ADVISORS LLC$860M
- RENAISSANCE TECHNOLOGIES LLC$487M
- Bridgewater Associates, LP$364M
- D. E. Shaw & Co., Inc.$349M
- TWO SIGMA INVESTMENTS, LP$156M
- DISCOVERY CAPITAL MANAGEMENT, LLC / CT$92M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 104,827,219 | $121.0B | 22.2% | 2026-Q2 |
| STATE STREET CORP trimmed | 50,075,870 | $57.8B | 10.6% | 2026-Q2 |
| Invesco Ltd. added | 36,315,240 | $41.9B | 7.7% | 2026-Q2 |
| Capital World Investors trimmed | 29,469,646 | $34.0B | 6.2% | 2026-Q2 |
| FMR LLC trimmed | 26,718,869 | $30.8B | 5.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 73,137,283 | $24.7B | 4.5% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 19,217,236 | $22.2B | 4.1% | 2026-Q2 |
| NORGES BANK added | 15,180,843 | $17.5B | 3.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 14,165,845 | $16.4B | 3.0% | 2026-Q2 |
| Capital International Investors added | 10,384,128 | $12.0B | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 27,432,757 | $9.2B | 1.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 23,024,614 | $7.8B | 1.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 5,045,141 | $5.8B | 1.1% | 2026-Q2 |
| MORGAN STANLEY added | 16,842,006 | $5.7B | 1.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 15,775,296 | $5.1B | 0.9% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 3,833,728 | $4.4B | 0.8% | 2026-Q2 |
| Capital Research Global Investors trimmed | 3,827,473 | $4.4B | 0.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 12,561,670 | $4.2B | 0.8% | 2026-Q1 |
| COATUE MANAGEMENT LLC added | 3,142,269 | $3.6B | 0.7% | 2026-Q2 |
| SG Americas Securities, LLC added | 10,582,752 | $3.6B | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 10,399,487 | $3.5B | 0.6% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 9,594,813 | $3.2B | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 8,038,287 | $2.7B | 0.5% | 2026-Q1 |
| BARCLAYS PLC trimmed | 7,774,892 | $2.6B | 0.5% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 7,441,161 | $2.5B | 0.5% | 2026-Q1 |
| Legal & General Group Plc added | 7,365,733 | $2.5B | 0.5% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 6,984,665 | $2.4B | 0.4% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 6,967,065 | $2.4B | 0.4% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP trimmed | 6,424,047 | $2.2B | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 6,334,208 | $2.1B | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 6,048,920 | $2.0B | 0.4% | 2026-Q1 |
| Amundi added | 5,970,808 | $2.0B | 0.4% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 5,273,783 | $1.8B | 0.3% | 2026-Q1 |
| CITIGROUP INC added | 4,760,739 | $1.6B | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 4,670,917 | $1.6B | 0.3% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 4,668,207 | $1.6B | 0.3% | 2026-Q1 |
| MARSHALL WACE, LLP added | 1,348,718 | $1.6B | 0.3% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ added | 4,323,263 | $1.5B | 0.3% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 3,881,507 | $1.3B | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 3,626,163 | $1.2B | 0.2% | 2026-Q1 |
| Appaloosa LP trimmed | 975,000 | $1.1B | 0.2% | 2026-Q2 |
| Swiss National Bank added | 3,303,100 | $1.1B | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 3,291,109 | $1.1B | 0.2% | 2026-Q1 |
| Nuveen, LLC trimmed | 3,265,420 | $1.1B | 0.2% | 2026-Q1 |
| California Public Employees Retirement System added | 3,188,608 | $1.1B | 0.2% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 3,084,266 | $1.0B | 0.2% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 2,928,537 | $989M | 0.2% | 2026-Q1 |
| National Pension Service trimmed | 2,876,052 | $972M | 0.2% | 2026-Q1 |
| Boston Partners trimmed | 2,802,923 | $951M | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 2,708,400 | $915M | 0.2% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 2,655,682 | $897M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 768,773 | $887M | 0.2% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 2,611,344 | $882M | 0.2% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 2,525,336 | $852M | 0.2% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 2,481,646 | $838M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 2,471,117 | $835M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 2,450,253 | $828M | 0.2% | 2026-Q1 |
| Atreides Management, LP trimmed | 711,364 | $821M | 0.2% | 2026-Q2 |
| Swedbank AB trimmed | 2,326,628 | $786M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 2,295,973 | $776M | 0.1% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 2,196,864 | $742M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 600,523 | $693M | 0.1% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 1,999,731 | $676M | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 1,975,259 | $667M | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 568,043 | $656M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 1,938,686 | $655M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 1,903,681 | $643M | 0.1% | 2026-Q1 |
| Daiwa Securities Group Inc. added | 1,884,021 | $636M | 0.1% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB added | 1,958,105 | $632M | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 535,173 | $618M | 0.1% | 2026-Q2 |
| SANDS CAPITAL MANAGEMENT, LLC new | 526,810 | $608M | 0.1% | 2026-Q2 |
| Employees Provident Fund Board trimmed | 1,778,313 | $601M | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,777,737 | $601M | 0.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 517,125 | $597M | 0.1% | 2026-Q2 |
| ProShare Advisors LLC trimmed | 1,745,620 | $590M | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 1,747,716 | $586M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 1,704,599 | $576M | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,639,439 | $554M | 0.1% | 2026-Q1 |
| TORONTO DOMINION BANK added | 1,639,253 | $554M | 0.1% | 2026-Q1 |
| Allianz Asset Management GmbH added | 1,636,359 | $553M | 0.1% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main trimmed | 1,609,789 | $544M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 1,572,997 | $531M | 0.1% | 2026-Q1 |
| WORLDQUANT MILLENNIUM ADVISORS LLC added | 1,549,039 | $523M | 0.1% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 1,516,435 | $512M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 1,720,961 | $491M | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 1,380,379 | $466M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 1,357,411 | $458M | 0.1% | 2026-Q1 |
| NATIXIS added | 1,318,495 | $445M | 0.1% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 1,303,768 | $440M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 1,257,902 | $425M | 0.1% | 2026-Q1 |
| BANK OF NOVA SCOTIA trimmed | 1,237,399 | $418M | 0.1% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 1,230,731 | $416M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 1,141,811 | $386M | 0.1% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 1,137,009 | $384M | 0.1% | 2026-Q1 |
| Ensign Peak Advisors, Inc added | 1,136,835 | $384M | 0.1% | 2026-Q1 |
| Mirae Asset Global Investments Co., Ltd. trimmed | 1,135,832 | $384M | 0.1% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 1,135,685 | $384M | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL trimmed | 331,391 | $383M | 0.1% | 2026-Q2 |
| VANGUARD GROUP INC added | 106,608,094 | $30.4B | 5.6% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP trimmed | 2,331,800 | $666M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.