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ArcelorMittal S.A. (MT) institutional ownership

Market cap$48.8B SectorBasic Materials
Funds holding · Q1 2026
287
reported MT position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
154 buyers · 133 sellers

ArcelorMittal S.A. (MT) price and institutional activity

Dates

Q1 2026

$0 bought by 154 investors
Bank of MontrealJane Street Group, LLC +152 more
$0 sold by 133 investors
Steadfast Capital Management LPPoint72 Asset Management, L.P. +131 more
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Bought Sold Totals per quarter; hover a bar for the names.

ArcelorMittal S.A. (MT) institutional activity · 287

Investor Type Est. change Change Δ Own Date
Bank of Montreal · Added
Change +780K Date Q1 2026
Bank of Montreal Added· Q1 2026 +780K Q1 2026
Jane Street Group, LLC · Added
Change +604K Date Q1 2026
Jane Street Group, LLC Added· Q1 2026 +604K Q1 2026
Steadfast Capital Management LP · Exited
Change −595K Δ Own −100.0% Date Q1 2026
Steadfast Capital Management LP Exited· Q1 2026 −595K −100.0% Q1 2026
Point72 Asset Management, L.P. · Exited
Change −563K Δ Own −100.0% Date Q1 2026
Point72 Asset Management, L.P. Exited· Q1 2026 −563K −100.0% Q1 2026
Barometer Capital Management Inc. · Exited
Change −482K Δ Own −100.0% Date Q1 2026
Barometer Capital Management Inc. Exited· Q1 2026 −482K −100.0% Q1 2026
BlackRock · Reduced
Change −448K Date Q1 2026
BlackRock Reduced· Q1 2026 −448K Q1 2026
Royal Bank of Canada · Reduced
Change −383K Date Q1 2026
Royal Bank of Canada Reduced· Q1 2026 −383K Q1 2026
Bank of New York Mellon Corp · Reduced
Change −376K Date Q1 2026
Bank of New York Mellon Corp Reduced· Q1 2026 −376K Q1 2026
Man Group PLC · Added
Change +351K Date Q1 2026
Man Group PLC Added· Q1 2026 +351K Q1 2026
Qube Research & Technologies Ltd · New
Change +336K Date Q1 2026
Qube Research & Technologies Ltd New· Q1 2026 +336K Q1 2026
Morgan Stanley · Added
Change +289K Date Q1 2026
Morgan Stanley Added· Q1 2026 +289K Q1 2026
BNP Paribas Financial Markets · Added
Change +281K Date Q1 2026
BNP Paribas Financial Markets Added· Q1 2026 +281K Q1 2026
Balyasny Asset Management L.P. · Exited
Change −281K Δ Own −100.0% Date Q1 2026
Balyasny Asset Management L.P. Exited· Q1 2026 −281K −100.0% Q1 2026
Senator Investment Group LP · Reduced
Change −239K Δ Own −41.2% Date Q1 2026
Senator Investment Group LP Reduced· Q1 2026 −239K −41.2% Q1 2026
Maple Rock Capital Partners Inc. · Reduced
Change −216K Date Q1 2026
Maple Rock Capital Partners Inc. Reduced· Q1 2026 −216K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 287

Famous investor activity in ArcelorMittal S.A. (MT)

ArcelorMittal S.A. (MT) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Lumen Investments S.A R.l. 339.4M
% of shares outstanding 36.9% Filing date Mar 3, 2022
Lumen Investments S.A R.l. 339.4M 36.9% Mar 3, 2022
BlackRock Inc. 41.4M
% of shares outstanding 4.9% Filing date Jul 8, 2024
BlackRock Inc. 41.4M 4.9% Jul 8, 2024
2 of 2

ArcelorMittal S.A. (MT) ownership FAQ

Who owns MT?

287 reporting institutions disclosed MT position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.