AMKOR TECHNOLOGY INC (AMKR) Stock Institutional Trading Activity


AMKOR TECHNOLOGY INC (AMKR) 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, Sequoia Financial Advisors, First Eagle U.S. Value, ARK Invest, and Arbiter Partners Capital Management. 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
Q2 2021First Eagle U.S. ValueBuy3,9003,900$92
Q4 2020Renaissance Technologies LLCSell-407,600306,400$4,621
Q3 2020Renaissance Technologies LLCSell-214,700714,000$7,997
Q2 2020Renaissance Technologies LLCSell-841,000928,700$11,432
Q1 2020Renaissance Technologies LLCSell-625,0001,769,700$13,786
Q4 2019Renaissance Technologies LLCBuy31,3002,394,700$31,131
Q3 2019Renaissance Technologies LLCSell-16,9002,363,400$21,507
Q2 2019Renaissance Technologies LLCBuy1,107,1052,380,300$17,757
Q1 2019Renaissance Technologies LLCBuy822,0951,273,195$10,873
Q4 2018Renaissance Technologies LLCSell-221,400451,100$2,959
Q3 2018Renaissance Technologies LLCSell-1,336,400672,500$4,970
Q1 2018Renaissance Technologies LLCBuy6,5002,008,900$20,350
Q4 2017Renaissance Technologies LLCSell-292,2002,002,400$20,124
Q3 2017Renaissance Technologies LLCSell-584,2002,294,600$24,208
Q2 2017Renaissance Technologies LLCSell-946,3002,878,800$28,126
Q1 2017Renaissance Technologies LLCSell-649,2003,825,100$44,333
Q4 2016Renaissance Technologies LLCBuy527,1004,474,300$47,204
Q3 2016Renaissance Technologies LLCBuy824,9003,947,200$38,367
Q2 2016Arbiter Partners Capital ManagementSell-2,035,999509,157$2,928
Q2 2016Renaissance Technologies LLCBuy407,8003,122,300$17,953
Q1 2016Arbiter Partners Capital ManagementSell-1,227,6712,545,156$14,991
Q1 2016Renaissance Technologies LLCBuy1,151,6002,714,500$15,988
Q4 2015Renaissance Technologies LLCSell-338,3001,562,900$9,502
Q4 2015Arbiter Partners Capital ManagementSell-283,3083,772,827$22,939
Q3 2015Renaissance Technologies LLCSell-147,4481,901,200$8,536
Q3 2015Arbiter Partners Capital ManagementBuy855,6004,056,135$18,171
Q2 2015Renaissance Technologies LLCSell-161,1522,048,648$12,251
Q2 2015Arbiter Partners Capital ManagementBuy3,068,8243,200,535$19,139
Q1 2015Renaissance Technologies LLCSell-220,5862,209,800$19,524
Q4 2014Renaissance Technologies LLCSell-260,1142,430,386$17,256

Frequently asked questions about AMKR activity

  • Which institutional owners are buying AMKR?

    Institutional owners buying AMKR 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 AMKR activity?

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

  • Is institutional interest in AMKR increasing?

    Institutional interest in AMKR 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.