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CSTM — CONSTELLIUM SE

Reported value held$1.55B
Funds holding (latest)43
SectorIndustrials
Funds holding (Q2 2026)37
Institutional value$1.45B · 45.64M sh
New / Add / Cut / Exit3 / 22 / 12 / 1
Top-5 / Top-10 concentration58.1% / 78.2%
Institutional holdings change Reducing -4.0% (-1.93M sh)
Institutional value change Up +24.3%

As of Q2 2026, 37 SEC-registered investment managers reported holding CSTM (CONSTELLIUM SE) in their latest 13F filings, with a combined reported value of $1.45B across 45.64M shares. That is -4.0% by share count (-1.93M shares) versus the previous quarter, while reported value moved +24.3%. Ownership is concentrated: the five largest holders account for 58.1% of reported value and the top ten for 78.2%.

Compared with the prior quarter, 3 opened new positions, 22 added to existing stakes, 12 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

CSTM is classified in the Industrials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 12.80M $408.01M 0.01% Reduce
Morgan Stanley history Q2 2026 6.18M $197.06M 0.01% Add
Arrowstreet Capital history Q2 2026 2.84M $90.66M 0.04% Reduce
AQR Capital Management history Q2 2026 2.40M $76.58M 0.03% Add
Vanguard Group history Q4 2025 4.05M $76.44M 0.00% Add
D. E. Shaw & Co history Q2 2026 2.20M $70.07M 0.04% Reduce
Fidelity Management & Research (FMR) history Q2 2026 2.19M $69.95M 0.00% Reduce
Goldman Sachs Group history Q2 2026 2.07M $65.99M 0.01% Add
Millennium Management history Q2 2026 1.96M $62.35M 0.02% Reduce
Geode Capital Management history Q2 2026 1.79M $57.03M 0.00% Add
JPMorgan Chase & Co history Q2 2026 1.15M $35.89M 0.00% New
Marshall Wace history Q2 2026 1.09M $34.86M 0.03% Add
Northern Trust Corp history Q2 2026 984.45K $31.37M 0.00% Add
Bank of America Corp history Q2 2026 957.58K $30.52M 0.00% Add
Citadel Advisors history Q2 2026 848.61K $27.05M 0.00% Reduce
Point72 Asset Management history Q2 2026 821.70K $26.19M 0.03% Reduce
Charles Schwab Investment Management history Q2 2026 734.25K $23.40M 0.00% Reduce
Balyasny Asset Management history Q2 2026 641.40K $20.44M 0.03% Reduce
Wells Fargo & Co history Q2 2026 498.79K $15.90M 0.00% Add
BNY Mellon history Q2 2026 435.77K $13.89M 0.00% Add

View all 43 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 12.44M 11.26M 10.64M 13.86M 14.02M 13.73M 12.96M 12.80M
Morgan Stanley 890.51K 610.10K 850.41K 823.00K 698.00K 946.06K 1.00M 984.36K 868.93K 978.98K 1.50M 2.22M 2.24M 2.16M 1.25M 1.60M 2.51M 3.73M 3.20M 6.18M
Arrowstreet Capital — — 168.37K 111.63K — — — — — — 31.68K — — 32.45K 340.59K 920.97K 919.22K 447.77K 3.23M 2.84M
AQR Capital Management — — 136.23K 72.19K — 132.63K 143.58K 127.81K 132.26K 141.74K 146.92K 151.70K 134.61K 20.17K 91.57K 383.08K 1.28M 1.77M 2.07M 2.40M
D. E. Shaw & Co 693.64K 875.91K 1.29M 1.30M 1.42M 1.53M 1.18M 523.48K 283.62K 62.02K 32.37K 343.97K 1.14M 2.43M 2.96M 2.28M 2.45M 3.06M 3.23M 2.20M
Fidelity Management & Research (FMR) 4.94M 5.68M 7.52M 9.18M 9.27M 11.17M 11.93M 14.43M 14.68M 14.64M 14.68M 14.20M 14.68M 14.68M 14.35M 13.81M 13.52M 10.57M 6.96M 2.19M
Goldman Sachs Group 3.15M 2.96M 3.36M 2.48M 2.54M 1.74M 2.38M 2.12M 1.69M 1.69M 1.84M 1.45M 1.38M 1.49M 1.48M 1.17M 1.21M 1.37M 1.37M 2.07M
Millennium Management 403.98K 138.72K 237.10K 1.46M 2.46M 1.51M 1.39M 923.40K 840.53K 511.23K 903.37K 1.17M 1.86M 2.48M 4.12M 5.12M 6.94M 6.27M 3.47M 1.96M
Geode Capital Management 1.12M 1.19M 1.03M 998.98K 1.05M 1.10M 1.18M 1.22M 1.29M 1.39M 1.43M 1.50M 1.49M 1.48M 1.52M 1.73M 1.71M 1.63M 1.67M 1.79M
JPMorgan Chase & Co — — 1.17M 1.19M 1.02M 864.83K 844.94K 1.34M 1.31M 1.10M 1.23M 855.25K 694.50K 781.95K 905.93K 2.17M 2.41M 2.09M — 1.15M
Marshall Wace — 3.97M 3.92M 4.07M 4.00M 3.53M 2.89M 2.67M 2.03M — — 35.44K 85.10K — 247.93K 406.88K 116.01K 48.74K 13.78K 1.09M
Northern Trust Corp 932.50K 929.66K 899.45K 899.15K 905.31K 905.85K 892.60K 906.85K 904.98K 946.64K 929.28K 871.06K 889.44K 913.23K 907.64K 1.02M 1.07M 941.85K 977.58K 984.45K
Bank of America Corp 1.78M 938.55K 1.69M 194.19K 2.99M 1.83M 346.00K 1.89M 332.58K 388.83K 323.80K 337.15K 299.14K 191.92K 361.28K 397.93K 488.94K 425.35K 851.22K 957.58K
Citadel Advisors — 377.46K 213.63K 3.17M 1.63M 1.04M 618.75K 819.58K 532.59K 415.30K 455.50K 2.28M 1.16M 1.09M 720.30K 545.87K 524.49K 294.59K 1.17M 848.61K
Point72 Asset Management — — — — — — — — — 211.21K — 189.24K 38.10K 29.50K 493.84K 623.69K — 318.09K 1.01M 821.70K
Charles Schwab Investment Management 601.99K 674.39K 737.91K 819.43K 912.30K 1.01M 1.19M 1.22M 1.24M 1.23M 1.25M 1.22M 1.16M 924.14K 736.88K 808.55K 822.70K 808.86K 783.24K 734.25K
Balyasny Asset Management — — 41.73K — 41.61K 31.33K 59.07K 28.21K — 77.13K — 255.44K 26.60K 10.03K 36.58K — — 219.37K 795.41K 641.40K
Wells Fargo & Co 276.48K 188.06K 138.18K 41.90K 34.00K 34.79K 54.19K 60.65K 33.80K 40.83K 47.56K 53.49K 51.79K 69.30K 63.94K 87.34K 110.45K 161.82K 95.11K 498.79K
BNY Mellon 3.45M 3.34M 3.37M 2.99M 2.93M 2.90M 2.81M 2.80M 620.40K 606.16K 622.16K 616.40K 490.92K 468.61K 337.38K 374.87K 384.13K 402.51K 397.74K 435.77K
Two Sigma Investments 15.10K 35.90K 48.71K — — 376.12K 398.58K 436.80K 390.61K 253.76K 407.25K 99.13K — — — — — — 288.90K 365.36K

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