Amkor Technology is trading at $44.00, up 5.52%, amid its expanded Gwangju investment plan; coverage does not explicitly link the announcement to the after-hours gain. - The planned investment rose to 3 trillion won from 1 trillion won, targeting advanced packaging capacity for AI and high-performance computing. - The project runs through 2031 and is expected to add about 2,000 jobs. - B. Riley cut its price target to $46 from $65, maintaining a Neutral rating.