Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP | 3.2M | $168.0M | +0.4% | 0.425% | 0.03% |
| 2 | MORGAN STANLEY | 2.0M | $104.4M | +16.8% | 0.264% | 0.01% |
| 3 | GOLDMAN SACHS GROUP INC | 1.6M | $82.3M | +1.6% | 0.208% | 0.01% |
| 4 | FMR LLC | 1.6M | $81.0M | +13.1% | 0.205% | 0.00% |
| 5 | BlackRock, Inc. | 1.4M | $74.3M | -23.8% | 0.188% | 0.00% |
| 6 | Maple Rock Capital Partners Inc. | 1.4M | $73.5M | -13.3% | 0.186% | 2.39% |
| 7 | Bank of New York Mellon Corp | 1.1M | $57.4M | -25.4% | 0.145% | 0.01% |
| 8 | BANK OF MONTREAL /CAN/ | 919K | $47.8M | +558.3% | 0.121% | 0.02% |
| 9 | Connor, Clark & Lunn Investment Management Ltd. | 890K | $46.3M | +0.7% | 0.117% | 0.11% |
| 10 | AMERICAN CENTURY COMPANIES INC | 747K | $38.8M | +37.8% | 0.098% | 0.02% |
| 11 | Retirement Systems of Alabama | 674K | $35.0M | 0.0% | 0.089% | 0.12% |
| 12 | BANK OF AMERICA CORP /DE/ | 671K | $34.9M | -20.3% | 0.088% | 0.00% |
| 13 | NORTHERN TRUST CORP | 618K | $32.1M | -19.9% | 0.081% | 0.00% |
| 14 | Man Group plc | 578K | $30.1M | +154.7% | 0.076% | 0.06% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 518K | $26.9M | -54.8% | 0.068% | 0.00% |
| 16 | ROYAL BANK OF CANADA | 441K | $22.9M | -46.5% | 0.058% | 0.00% |
| 17 | UBS Group AG | 406K | $21.1M | +83.3% | 0.053% | 0.00% |
| 18 | D. E. Shaw & Co., Inc. | 373K | $19.4M | +9.0% | 0.049% | 0.02% |
| 19 | Qube Research & Technologies Ltd | 336K | $17.5M | — | 0.044% | 0.02% |
| 20 | Jain Global LLC | 336K | $17.5M | — | 0.044% | 0.09% |
| 21 | Quantinno Capital Management LP | 336K | $17.5M | +11.7% | 0.044% | 0.03% |
| 22 | BNP PARIBAS ARBITRAGE, SA | 289K | $15.0M | +3626.8% | 0.038% | 0.01% |
| 23 | AQR CAPITAL MANAGEMENT LLC | 276K | $14.4M | +17.3% | 0.036% | 0.01% |
| 24 | CAUSEWAY CAPITAL MANAGEMENT LLC | 266K | $13.8M | -31.0% | 0.035% | 0.17% |
| 25 | ROBOTTI ROBERT | 237K | $12.3M | -30.2% | 0.031% | 1.92% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MT — a direct measure of their conviction.
Filings activity in MT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 285 | +3.3% | 2.64% | +0.01 pp | $1.42B | +0.2% |
| Q4 2025 | 276 | +15% | 2.63% | +0.62 pp | $1.42B | +31% |
| Q3 2025 | 240 | +4.3% | 2.01% | +0.16 pp | $1.08B | +8.7% |
| Q2 2025 | 230 | +10% | 1.85% | +0.08 pp | $998M | +4.4% |
| Q1 2025 | 209 | +4.0% | 1.77% | +0.22 pp | $956M | +15% |
| Q4 2024 | 201 | +4.1% | 1.55% | 7.89 pp | $835M | 84% |
| Q3 2024 | 193 | +7.8% | 9.44% | +6.69 pp | $5.09B | +244% |
| Q2 2024 | 179 | — | 2.75% | — | $1.48B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MT stock.
Based on Q1 2026 13F filings, institutional ownership of ArcelorMittal S.A. stands at 2.6%, held across 285 reporting institutions.
DIMENSIONAL FUND ADVISORS LP is the largest reported institutional holder of MT, with approximately 3,232,495 shares worth $0.17B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of MT, including SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for MT is 50 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
53 institutions opened new positions in MT during Q1 2026, while 44 fully exited. 156 added to existing positions and 73 trimmed.
MT institutional ownership rose by 0.01 percentage points quarter-over-quarter, with a net change of +9 holders.
The top 10 institutions account for 54.5% of all reported 13F value in MT, and the top 25 account for 77.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
ArcelorMittal S.A. (MT) Institutional Ownership