Ranked by reported Q2 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 | FMR LLC | 11.4M | $686.0M | +631.4% | 1.497% | 0.03% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 3.3M | $195.9M | +0.7% | 0.427% | 0.04% |
| 3 | Maple Rock Capital Partners Inc. | 2.2M | $131.9M | +54.9% | 0.288% | 2.59% |
| 4 | GOLDMAN SACHS GROUP INC | 1.6M | $93.9M | -1.5% | 0.205% | 0.01% |
| 5 | MORGAN STANLEY | 1.5M | $90.6M | -25.1% | 0.198% | 0.00% |
| 6 | BlackRock, Inc. | 1.5M | $88.6M | +2.9% | 0.193% | 0.00% |
| 7 | Castle Hook Partners LP | 1.3M | $77.7M | — | 0.169% | 0.36% |
| 8 | Bank of New York Mellon Corp | 942K | $56.7M | -14.7% | 0.124% | 0.01% |
| 9 | Connor, Clark & Lunn Investment Management Ltd. | 934K | $56.3M | +4.9% | 0.123% | 0.11% |
| 10 | AMERICAN CENTURY COMPANIES INC | 828K | $49.9M | +10.9% | 0.109% | 0.02% |
| 11 | Man Group plc | 756K | $45.5M | +30.8% | 0.099% | 0.07% |
| 12 | Retirement Systems of Alabama | 674K | $40.6M | 0.0% | 0.089% | 0.12% |
| 13 | CITADEL ADVISORS LLC | 560K | $33.7M | -21.9% | 0.073% | 0.00% |
| 14 | BANK OF AMERICA CORP /DE/ | 525K | $31.6M | -21.7% | 0.069% | 0.00% |
| 15 | SCOPUS ASSET MANAGEMENT, L.P. | 500K | $30.1M | — | 0.066% | 0.42% |
| 16 | NORTHERN TRUST CORP | 496K | $29.8M | -19.8% | 0.065% | 0.00% |
| 17 | VAN ECK ASSOCIATES CORP | 473K | $28.5M | -17.0% | 0.062% | 0.02% |
| 18 | Merewether Investment Management, LP | 391K | $23.6M | +1289.3% | 0.051% | 0.44% |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 380K | $22.9M | -26.6% | 0.050% | 0.00% |
| 20 | Quantinno Capital Management LP | 369K | $22.2M | +9.8% | 0.049% | 0.03% |
| 21 | Walleye Trading LLC | 364K | $21.9M | +11.5% | 0.048% | 0.03% |
| 22 | Capital Wealth Planning, LLC | 350K | $21.1M | +75.3% | 0.046% | 0.11% |
| 23 | ROYAL BANK OF CANADA | 346K | $20.8M | -21.7% | 0.045% | 0.00% |
| 24 | AQR CAPITAL MANAGEMENT LLC | 340K | $20.5M | +23.0% | 0.045% | 0.01% |
| 25 | JANE STREET GROUP, LLC | 335K | $20.2M | -56.3% | 0.044% | 0.00% |
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 Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new MT position in Q2 2026
Institutions that fully closed their MT position in Q2 2026
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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 320 | +7.0% | 5.19% | +1.13 pp | $2.37B | +52% |
| Q1 2026 | 299 | +6.0% | 4.06% | 0.49 pp | $1.56B | +1.7% |
| Q4 2025 | 282 | +14% | 4.55% | +0.08 pp | $1.53B | +27% |
| Q3 2025 | 247 | +7.4% | 4.47% | +0.17 pp | $1.20B | +21% |
| Q2 2025 | 230 | +10% | 4.30% | 0.17 pp | $998M | +4.4% |
| Q1 2025 | 209 | +4.0% | 4.47% | 0.32 pp | $956M | +15% |
| Q4 2024 | 201 | +4.1% | 4.79% | 20.66 pp | $835M | 84% |
| Q3 2024 | 193 | — | 25.45% | — | $5.09B | — |
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 Q2 2026 13F filings, institutional ownership of ArcelorMittal S.A. stands at 5.2%, held across 320 reporting institutions.
FMR LLC is the largest reported institutional holder of MT, with approximately 11,391,416 shares worth $0.69B as of Q2 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of MT, including CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, JANE STREET GROUP, LLC.
Our composite Smart Money Score for MT is 74 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
54 institutions opened new positions in MT during Q2 2026, while 37 fully exited. 190 added to existing positions and 64 trimmed.
MT institutional ownership rose by 1.13 percentage points quarter-over-quarter, with a net change of +21 holders.
The top 10 institutions account for 64.4% of all reported 13F value in MT, and the top 25 account for 81.9%.
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