CSTM Constellium N.V.
Constellium N.V. (CSTM) Institutional Ownership
What the institutions did with CSTM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 12.8M | 10.5% |
| Bpifrance SA | 8.4M | 6.9% |
| MORGAN STANLEY | 6.2M | 5.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.4M | 3.6% |
| AMERICAN CENTURY COMPANIES INC | 4.2M | 3.5% |
| T. Rowe Price Investment Management, Inc. | 3.0M | 2.5% |
| STATE STREET CORP | 3.0M | 2.4% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.8M | 2.3% |
| Nuveen, LLC | 2.8M | 2.3% |
| Kinetic Partners Management, LP | 2.5M | 2.1% |
| Encompass Capital Advisors LLC | 2.4M | 2.0% |
| AQR CAPITAL MANAGEMENT LLC | 2.4M | 2.0% |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 2.3M | 1.9% |
| D. E. Shaw & Co., Inc. | 2.2M | 1.8% |
| FMR LLC | 2.2M | 1.8% |
| ALLIANCEBERNSTEIN L.P. | 2.2M | 1.8% |
| ACADIAN ASSET MANAGEMENT LLC | 2.1M | 1.7% |
| GOLDMAN SACHS GROUP INC | 2.1M | 1.7% |
| MILLENNIUM MANAGEMENT LLC | 2.0M | 1.6% |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC | 1.9M | 1.6% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.9M | 1.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | 1.5% |
| SCOPUS ASSET MANAGEMENT, L.P. | 1.7M | 1.4% |
| Allianz Asset Management GmbH | 1.5M | 1.2% |
| SG Americas Securities, LLC | 1.2M | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Reduced | 7.0M | 2.2M | -4.8M |
| Bpifrance SA | Reduced | 12.6M | 8.4M | -4.2M |
| MORGAN STANLEY | Increased | 3.2M | 6.2M | +3.0M |
| AMERICAN CENTURY COMPANIES INC | Increased | 2.1M | 4.2M | +2.1M |
| MILLENNIUM MANAGEMENT LLC | Reduced | 3.5M | 2.0M | -1.5M |
| Kinetic Partners Management, LP | Increased | 1.3M | 2.5M | +1.2M |
| Senator Investment Group LP | New | 0 | 1.1M | +1.1M |
| MARSHALL WACE, LLP | Increased | 13.8K | 1.1M | +1.1M |
| D. E. Shaw & Co., Inc. | Reduced | 3.2M | 2.2M | -1.0M |
| T. Rowe Price Investment Management, Inc. | Reduced | 4.0M | 3.0M | -980.3K |
| JPMORGAN CHASE & CO | Reduced | 2.1M | 1.1M | -905.8K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 855.7K | 3.0K | -852.6K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.3M | 2.1M | +834.6K |
| GOLDMAN SACHS GROUP INC | Increased | 1.4M | 2.1M | +698.9K |
| Engineers Gate Manager LP | Reduced | 884.1K | 197.7K | -686.4K |
| JANE STREET GROUP, LLC | Reduced | 832.5K | 153.5K | -678.9K |
| Soapstone Management L.P. | Reduced | 800.0K | 200.0K | -600.0K |
| Allianz Asset Management GmbH | Increased | 893.9K | 1.5M | +559.8K |
| Cannell & Spears LLC | Reduced | 909.2K | 416.9K | -492.3K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3.9M | 4.4M | +464.7K |
| MACKENZIE FINANCIAL CORP | Increased | 181.5K | 592.5K | +411.1K |
| WELLS FARGO & COMPANY/MN | Increased | 95.1K | 498.8K | +403.7K |
| BEACONLIGHT CAPITAL, LLC | Reduced | 1.2M | 779.9K | -391.9K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 3.2M | 2.8M | -383.3K |
| HRT FINANCIAL LP | Increased | 518.8K | 874.1K | +355.3K |
| PANAGORA ASSET MANAGEMENT INC | Increased | 704.8K | 1.0M | +343.5K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 2.1M | 2.4M | +328.1K |
| COOPER CREEK PARTNERS MANAGEMENT LLC | Reduced | 764.2K | 441.8K | -322.4K |
| WESTWOOD HOLDINGS GROUP INC | Reduced | 1.4M | 1.1M | -302.1K |
| CITADEL ADVISORS LLC | Reduced | 770.6K | 474.3K | -296.3K |
| HENNESSY ADVISORS INC | New | 0 | 294.5K | +294.5K |
| SG Americas Securities, LLC | Reduced | 1.5M | 1.2M | -263.4K |
| WHITEBOX ADVISORS LLC | Reduced | 346.7K | 95.7K | -251.0K |
| DANSKE BANK A/S | Increased | 395.4K | 642.7K | +247.3K |
| Man Group plc | Increased | 120.6K | 359.3K | +238.7K |
| NEUBERGER BERMAN GROUP LLC | New | 0 | 237.3K | +237.3K |
| SummitTX Capital, L.P. | Reduced | 330.2K | 95.8K | -234.4K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Increased | 2.1M | 2.3M | +221.9K |
| ArrowMark Colorado Holdings LLC | Reduced | 497.4K | 277.2K | -220.2K |
| Bayberry Capital Partners LP | Reduced | 874.0K | 655.0K | -219.0K |
| Hudson Bay Capital Management LP | Reduced | 402.0K | 185.6K | -216.4K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | 252.2K | 35.8K | -216.4K |
| Kailix Advisors LLC | Reduced | 494.4K | 278.2K | -216.2K |
| OCCUDO QUANTITATIVE STRATEGIES LP | Increased | 203.3K | 416.4K | +213.1K |
| BW Gestao de Investimentos Ltda. | Sold Out | 207.1K | 0 | -207.1K |
| THORNBURG INVESTMENT MANAGEMENT INC | Sold Out | 205.5K | 0 | -205.5K |
| Jump Financial, LLC | Increased | 14.5K | 218.7K | +204.2K |
| LAZARD ASSET MANAGEMENT LLC | Increased | 87.1K | 285.5K | +198.4K |
| Bridgewater Associates, LP | Reduced | 503.0K | 311.6K | -191.4K |
| STATE STREET CORP | Increased | 2.8M | 3.0M | +191.3K |
| LPL Financial LLC | Increased | 77.1K | 268.3K | +191.1K |
| Edgestream Partners, L.P. | Reduced | 226.3K | 37.7K | -188.6K |
| FEDERATED HERMES, INC. | Increased | 652.7K | 838.6K | +185.9K |
| TD Waterhouse Canada Inc. | New | 0 | 184.3K | +184.3K |
| Point72 Asset Management, L.P. | Reduced | 1.0M | 821.7K | -183.5K |
| RAYMOND JAMES FINANCIAL INC | Increased | 328.8K | 512.3K | +183.5K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | Increased | 38.9K | 218.8K | +179.9K |
| Mountaineer Partners Management, LLC | Reduced | 658.5K | 482.1K | -176.4K |
| LGT Fund Management Co Ltd. | Sold Out | 164.7K | 0 | -164.7K |
| BlackRock, Inc. | Reduced | 13.0M | 12.8M | -161.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.