CONSTELLIUM SE (CSTM) Institutional Ownership and Insiders Activity

CONSTELLIUM SE (CSTM) is widely held by institutional investors, with 378 firms reporting positions valued at approximately $3.83B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $408.01M in CSTM holdings in its latest filing.