Century Aluminum CENX Institutional Ownership

Updated Oct 11, 2026

Century Aluminum Co (NASDAQ:CENX) was held by 413 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• Total shares held in Century Aluminum rose 3.25% from Q1 2026, while the number of holders rose 87.73% from Q2 2025.
• Of the 413 holders, 263 added to their positions, 110 reduced their stakes and 40 left their positions unchanged in Q2 2026.
• In total, institutional investors held 104.04Mn shares of Century Aluminum at the end of Q2 2026, up 3.28Mn from the prior quarter and up 11.18Mn from a year earlier.
• Glencore plc led 13F holders of CENX with 29.69Mn shares as of June 30, 2026.
• Among holders that already owned Century Aluminum, the biggest buyers in Q2 2026 were BlackRock, Inc. (+1.29Mn shares), State Street Corp (+875.18K shares), Fisher Asset Management, LLC (+683.1K shares), Goldman Sachs Group Inc (+670.13K shares) and Balyasny Asset Management L.P. (+664.53K shares).
• Among holders that kept a stake in Century Aluminum, the biggest sellers in Q2 2026 were Jane Street Group, LLC (-1.24Mn shares), Citadel Advisors LLC (-1.03Mn shares), Millennium Management LLC (-871.41K shares), FMR LLC (-699.7K shares) and Encompass Capital Advisors LLC (-651.36K shares).
• Century Aluminum's 10 largest institutional shareholders as of Q2 2026 were Glencore plc (29.69Mn shares), BlackRock, Inc. (10.3Mn shares), State Street Corp (5.54Mn shares), Vanguard Portfolio Management LLC (4.77Mn shares), Vanguard Capital Management LLC (2.97Mn shares), Invesco Ltd. (2.42Mn shares), Sourcerock Group LLC (2.27Mn shares), Dimensional Fund Advisors LP (2.21Mn shares), FMR LLC (1.96Mn shares) and Geode Capital Management, LLC (1.85Mn shares), per Business Quant data.