CENTURY ALUMINUM COMPANY (CENX) Stock Institutional Trading Activity


CENTURY ALUMINUM COMPANY (CENX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, First Eagle U.S. Value, and Donald Smith & Co.. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-247,100117,999$4,623,201
Q3 2025First Eagle U.S. ValueBuy2,097340,153$9,986,892
Q3 2025Renaissance Technologies LLCBuy209,500365,099$10,719,307
Q2 2025Renaissance Technologies LLCSell-74,100155,599$2,803,894
Q2 2025First Eagle U.S. ValueSell-27,000338,056$6,091,769
Q1 2025First Eagle U.S. ValueSell-63,700365,056$6,775,439
Q4 2024Renaissance Technologies LLCSell-55,000229,699$4,185,116
Q4 2024First Eagle U.S. ValueSell-202,558428,756$7,811,934
Q3 2024Renaissance Technologies LLCBuy25,400284,699$4,620,665
Q3 2024First Eagle U.S. ValueSell-122,000631,314$10,246,226
Q2 2024Renaissance Technologies LLCSell-59,800259,299$4,343,258
Q2 2024First Eagle U.S. ValueSell-80,000753,314$12,618,010
Q1 2024Renaissance Technologies LLCSell-132,800319,099$4,911
Q1 2024First Eagle U.S. ValueSell-34,200833,314$12,824,702
Q4 2023Renaissance Technologies LLCSell-162,600451,899$5,486
Q4 2023First Eagle U.S. ValueBuy76,000867,514$10,531,620
Q3 2023Renaissance Technologies LLCSell-145,100614,499$4,418
Q3 2023First Eagle U.S. ValueBuy380,324791,514$5,690,986
Q2 2023Renaissance Technologies LLCBuy58,400759,599$6,624
Q2 2023First Eagle U.S. ValueBuy71,985411,190$3,585,577
Q1 2023Renaissance Technologies LLCSell-336,300701,199$7,012
Q1 2023First Eagle U.S. ValueSell-71,700339,205$3,392,050
Q4 2022Renaissance Technologies LLCBuy366,4001,037,499$8,487
Q4 2022First Eagle U.S. ValueBuy89,500410,905$3,361,203
Q3 2022First Eagle U.S. ValueBuy166,259321,405$1,697
Q3 2022Renaissance Technologies LLCBuy88,000671,099$3,543
Q2 2022First Eagle U.S. ValueBuy126,959155,146$1,143
Q2 2022Renaissance Technologies LLCSell-86,100583,099$4,297
Q1 2022First Eagle U.S. ValueSell-17,10928,187$742
Q1 2022Renaissance Technologies LLCBuy648,321669,199$17,607

Frequently asked questions about CENX activity

  • Which institutional owners are buying CENX?

    Institutional owners buying CENX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CENX activity?

    "Buy" means an investor increased their reported position in CENX compared to the prior reporting period. This reflects growing exposure to CENTURY ALUMINUM COMPANY (CENX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CENX increasing?

    Institutional interest in CENX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.