Who owns MT (MT)
Which tracked institutional funds hold MT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MT company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
76 tracked funds added or opened MT while 52 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
MT’s largest tracked holder by dollar value, DIMENSIONAL FUND ADVISORS LP, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MT 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 297 tracked filers holding MT, 155 increased or opened the position and 143 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 MT between the 2025-Q4 and 2026-Q1 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 19
- Qube Research & Technologies Ltd$17M
- Carrhae Capital LLP$10M
- PointState Capital LP$7M
- PEAK6 LLC$5M
- ABC ARBITRAGE SA$4M
- Squarepoint Ops LLC$3M
Full exits 16
- STEADFAST CAPITAL MANAGEMENT LP$27M
- Point72 Asset Management, L.P.$26M
- BAROMETER CAPITAL MANAGEMENT INC.$13M
- Balyasny Asset Management L.P.$13M
- DV EQUITIES, LLC$7M
- Castle Hook Partners LP$6M
Largest adds
- BANK OF MONTREAL /CAN/$41M
- JANE STREET GROUP, LLC$31M
- MORGAN STANLEY$26M
- DIMENSIONAL FUND ADVISORS LP$21M
- Man Group plc$20M
- FMR LLC$18M
Largest trims
- ROYAL BANK OF CANADA$15M
- BlackRock, Inc.$11M
- Bank of New York Mellon Corp$10M
- Senator Investment Group LP$9M
- HALLSTATT ADVISORS L.P.$5M
- NEUBERGER BERMAN GROUP LLC$4M
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 |
|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP added | 3,232,495 | $168M | 10.5% | 2026-Q1 |
| MORGAN STANLEY added | 2,007,524 | $104M | 6.5% | 2026-Q1 |
| FMR LLC added | 1,556,440 | $81M | 5.1% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,429,558 | $74M | 4.7% | 2026-Q1 |
| Maple Rock Capital Partners Inc. trimmed | 1,414,265 | $74M | 4.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,322,923 | $69M | 4.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,104,401 | $57M | 3.6% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 919,456 | $48M | 3.0% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 890,458 | $46M | 2.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 746,915 | $39M | 2.4% | 2026-Q1 |
| Retirement Systems of Alabama | 674,150 | $35M | 2.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 670,631 | $35M | 2.2% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 618,135 | $32M | 2.0% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 608,569 | $32M | 2.0% | 2026-Q1 |
| Man Group plc added | 578,164 | $30M | 1.9% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP trimmed | 569,842 | $30M | 1.9% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 441,068 | $23M | 1.4% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 396,857 | $21M | 1.3% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 373,275 | $19M | 1.2% | 2026-Q1 |
| Senator Investment Group LP trimmed | 341,258 | $18M | 1.1% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 336,363 | $17M | 1.1% | 2026-Q1 |
| Quantinno Capital Management LP added | 335,931 | $17M | 1.1% | 2026-Q1 |
| UBS Group AG added | 326,827 | $17M | 1.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 288,788 | $15M | 0.9% | 2026-Q1 |
| HRT FINANCIAL LP added | 287,203 | $15M | 0.9% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 269,680 | $14M | 0.9% | 2026-Q1 |
| CAUSEWAY CAPITAL MANAGEMENT LLC trimmed | 265,697 | $14M | 0.9% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 247,217 | $13M | 0.8% | 2026-Q1 |
| ROBOTTI ROBERT trimmed | 236,570 | $12M | 0.8% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 243,849 | $12M | 0.7% | 2026-Q1 |
| JB CAPITAL PARTNERS LP | 205,000 | $11M | 0.7% | 2026-Q1 |
| Cerity Partners LLC trimmed | 203,774 | $11M | 0.7% | 2026-Q1 |
| Capital Wealth Planning, LLC trimmed | 199,876 | $10M | 0.7% | 2026-Q1 |
| Carrhae Capital LLP added | 196,677 | $10M | 0.6% | 2026-Q1 |
| Albar Capital Partners LLP added | 177,793 | $9M | 0.6% | 2026-Q1 |
| BW Gestao de Investimentos Ltda. trimmed | 171,149 | $9M | 0.6% | 2026-Q1 |
| Creative Planning added | 154,983 | $8M | 0.5% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 148,100 | $8M | 0.5% | 2026-Q1 |
| Amanah Holdings Trust | 148,000 | $8M | 0.5% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 148,408 | $8M | 0.5% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 145,241 | $8M | 0.5% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 130,770 | $7M | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 127,693 | $7M | 0.4% | 2026-Q1 |
| PointState Capital LP trimmed | 125,127 | $7M | 0.4% | 2026-Q1 |
| XTX Topco Ltd added | 112,850 | $6M | 0.4% | 2026-Q1 |
| Impala Asset Management LLC trimmed | 110,887 | $6M | 0.4% | 2026-Q1 |
| Carrera Capital Advisors added | 107,655 | $6M | 0.4% | 2026-Q1 |
| MMCAP International Inc. SPC added | 105,870 | $6M | 0.3% | 2026-Q1 |
| QRG CAPITAL MANAGEMENT, INC. trimmed | 97,537 | $5M | 0.3% | 2026-Q1 |
| PEAK6 LLC added | 95,947 | $5M | 0.3% | 2026-Q1 |
| MERCER GLOBAL ADVISORS INC /ADV added | 91,045 | $5M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 86,672 | $4M | 0.3% | 2026-Q1 |
| SummitTX Capital, L.P. trimmed | 78,457 | $4M | 0.3% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 75,105 | $4M | 0.2% | 2026-Q1 |
| ABC ARBITRAGE SA trimmed | 73,471 | $4M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 69,749 | $4M | 0.2% | 2026-Q1 |
| HALLSTATT ADVISORS L.P. trimmed | 69,489 | $4M | 0.2% | 2026-Q1 |
| ICON ADVISERS INC/CO added | 65,000 | $3M | 0.2% | 2026-Q1 |
| Pathstone Holdings, LLC trimmed | 63,124 | $3M | 0.2% | 2026-Q1 |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. added | 58,085 | $3M | 0.2% | 2026-Q1 |
| STATE STREET CORP trimmed | 57,045 | $3M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 55,311 | $3M | 0.2% | 2026-Q1 |
| LPL Financial LLC trimmed | 54,782 | $3M | 0.2% | 2026-Q1 |
| Campbell & CO Investment Adviser LLC added | 54,116 | $3M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 48,155 | $3M | 0.2% | 2026-Q1 |
| NATIXIS ADVISORS, LLC added | 47,215 | $2M | 0.2% | 2026-Q1 |
| OLD MISSION CAPITAL LLC trimmed | 45,957 | $2M | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP added | 44,321 | $2M | 0.1% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 43,916 | $2M | 0.1% | 2026-Q1 |
| Brooklyn Investment Group added | 43,499 | $2M | 0.1% | 2026-Q1 |
| EVOLVE PRIVATE WEALTH, LLC added | 42,597 | $2M | 0.1% | 2026-Q1 |
| Mariner, LLC added | 41,025 | $2M | 0.1% | 2026-Q1 |
| Vanguard Personalized Indexing Management, LLC trimmed | 37,233 | $2M | 0.1% | 2026-Q1 |
| Jain Global LLC new | 36,163 | $2M | 0.1% | 2026-Q1 |
| Verition Fund Management LLC added | 36,000 | $2M | 0.1% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 35,088 | $2M | 0.1% | 2026-Q1 |
| Tower Research Capital LLC (TRC) added | 34,744 | $2M | 0.1% | 2026-Q1 |
| SIGNATUREFD, LLC added | 34,553 | $2M | 0.1% | 2026-Q1 |
| STEADFAST CAPITAL MANAGEMENT LP new | 595,047 | $27M | 1.7% | 2025-Q4 stale |
| Point72 Asset Management, L.P. added | 562,933 | $26M | 1.6% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP trimmed | 789,600 | $23M | 1.4% | 2025-Q1 stale |
| Optiver Holding B.V. trimmed | 417,117 | $13M | 0.8% | 2025-Q2 stale |
| BAROMETER CAPITAL MANAGEMENT INC. added | 481,960 | $13M | 0.8% | 2025-Q4 stale |
| Balyasny Asset Management L.P. trimmed | 280,869 | $13M | 0.8% | 2025-Q4 stale |
| Telemark Asset Management, LLC | 400,000 | $13M | 0.8% | 2025-Q2 stale |
| DV EQUITIES, LLC new | 156,745 | $7M | 0.5% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC added | 211,326 | $7M | 0.4% | 2025-Q2 stale |
| Castle Hook Partners LP trimmed | 130,669 | $6M | 0.4% | 2025-Q4 stale |
| Arrow Capital Pty Ltd trimmed | 100,000 | $5M | 0.3% | 2025-Q3 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 116,633 | $4M | 0.3% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC trimmed | 110,995 | $4M | 0.3% | 2025-Q3 stale |
| Walleye Trading LLC trimmed | 86,120 | $4M | 0.2% | 2025-Q4 stale |
| AMERICAN FINANCIAL GROUP INC | 133,333 | $4M | 0.2% | 2025-Q1 stale |
| JOHNSON INVESTMENT COUNSEL INC new | 224 | $3M | 0.2% | 2025-Q3 stale |
| Blackstone Inc. new | 50,984 | $2M | 0.1% | 2025-Q4 stale |
| Integrated Quantitative Investments LLC trimmed | 59,700 | $2M | 0.1% | 2025-Q3 stale |
| Woodline Partners LP new | 64,672 | $2M | 0.1% | 2025-Q2 stale |
| Mork Capital Management, LLC | 43,200 | $2M | 0.1% | 2025-Q4 stale |
| NEW YORK STATE COMMON RETIREMENT FUND | 53,200 | $2M | 0.1% | 2025-Q3 stale |
| CWA Asset Management Group, LLC added | 39,067 | $2M | 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.