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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- AMKOR TECHNOLOGY INC (AMKR) stock institutional ownership
- AMKOR TECHNOLOGY INC (AMKR) stock insider trading activity
- Stock rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q3 2014 | Arbiter Partners Capital Management | Sell | -6,000 | 131,711 | $1,108 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 1,047,297 | 2,690,500 | $22,627 |
| Q2 2014 | Arbiter Partners Capital Management | Sell | -510,000 | 137,711 | $1,540 |
| Q2 2014 | Renaissance Technologies LLC | Buy | 477,722 | 1,643,203 | $18,371 |
| Q1 2014 | Arbiter Partners Capital Management | Buy | 150,000 | 647,711 | $4,443 |
| Q1 2014 | Renaissance Technologies LLC | Buy | 270,881 | 1,165,481 | $7,995 |
| Q4 2013 | Arbiter Partners Capital Management | Sell | -150,000 | 497,711 | $3,051 |
| Q4 2013 | Renaissance Technologies LLC | Buy | 402,700 | 894,600 | $5,484 |
| Q3 2013 | Renaissance Technologies LLC | Buy | 290,100 | 491,900 | $2,106 |
| Q3 2013 | Arbiter Partners Capital Management | Buy | 127,711 | 647,711 | $2,775 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 201,800 | 201,800 | $850 |
| Q2 2013 | Arbiter Partners Capital Management | Buy | 520,000 | 520,000 | $2,189 |
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.