MAGNACHIP SEMICONDUCTOR CORP (MX) Stock Institutional Trading Activity


MAGNACHIP SEMICONDUCTOR CORP (MX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Oaktree Capital Management, Fairfax Financial Holdings, and Engaged Capital. 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
Q3 2025Renaissance Technologies LLCBuy79,00097,900$306,427
Q1 2025Renaissance Technologies LLCSell-219,00018,900$64,827
Q4 2024Renaissance Technologies LLCBuy44,546237,900$956,358
Q3 2024Renaissance Technologies LLCBuy176,566193,354$902,963
Q1 2024Renaissance Technologies LLCSell-420,90016,788$94
Q4 2023Renaissance Technologies LLCBuy350,900437,688$3,283
Q3 2023Renaissance Technologies LLCSell-27,40086,788$721
Q2 2023Renaissance Technologies LLCSell-22,399114,188$1,277
Q2 2023Oaktree Capital ManagementBuy549,8582,849,858$31,861,412
Q1 2023Renaissance Technologies LLCBuy108,744136,587$1,268
Q4 2022Renaissance Technologies LLCSell-64,44527,843$261
Q3 2022Fairfax Financial HoldingsBuy25,000125,000$1,280
Q4 2021Renaissance Technologies LLCSell-95,54392,288$1,935
Q4 2021Fairfax Financial HoldingsBuy43,800100,000$2,096
Q4 2021Oaktree Capital ManagementBuy293,4632,300,000$48,231
Q2 2021Fairfax Financial HoldingsBuy56,20056,200$1,340
Q2 2021Oaktree Capital ManagementSell-825,0002,006,537$47,875
Q1 2021Oaktree Capital ManagementSell-383,0002,831,537$70,505
Q4 2020Renaissance Technologies LLCBuy48,600187,831$2,539
Q4 2020Oaktree Capital ManagementBuy275,0003,214,537$43,460
Q3 2020Renaissance Technologies LLCSell-236,000139,231$1,907
Q3 2020Engaged CapitalSell-270,348910,877$12,479
Q2 2020Renaissance Technologies LLCBuy268,501375,231$3,865
Q1 2020Renaissance Technologies LLCSell-56,301106,730$1,179
Q1 2020Oaktree Capital ManagementSell-231,1922,939,537$32,481
Q4 2019Renaissance Technologies LLCSell-26,200163,031$1,893
Q4 2019Oaktree Capital ManagementSell-79,2713,170,729$36,812
Q3 2019Renaissance Technologies LLCBuy106,000189,231$1,919
Q2 2019Renaissance Technologies LLCSell-184,90083,231$861
Q2 2018Oaktree Capital ManagementBuy250,0003,250,000$33,312

Frequently asked questions about MX activity

  • Which institutional owners are buying MX?

    Institutional owners buying MX 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 MX activity?

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

  • Is institutional interest in MX increasing?

    Institutional interest in MX 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.