Pros
Amkor inhabits an interesting industry, the outsourced assembly and test industry supporting semiconductors. As the bottom-feeders of the semiconductor industry, they possess a variety of cast-off manufacturing facilities across Asia cobbled together under one company's umbrella, but in no way integrated or efficiently managed. The Wiki refers to it as "With the majority of its factories in China, Japan, Korea, Philippines, Singapore, Taiwan, and the United States, Amkor is a leading player in the semiconductor industry. It assembles and tests computer chips (ICs) for chip manufacturers. One of Amkor's product developments is its MicroLeadFrame chip carrier (IC package) technology." "Leading" being a value judgment with questionable basis.
Cons
Amkor is run in a strangely nepotistic fashion, with many senior positions filled with members of the Kim family from Korea, and complemented by a mix of American hangers-on. The Wiki mentions that on "July 19, 2007, Kevin Heron, Amkor's former General Counsel was convicted of using nonpublic information while buying and selling shares in Amkor and in Neoware Inc., a computer hardware company that was purchased by Hewlett Packard in 2007. Heron made almost $290,000 with over 50 trades in Amkor stock from October 2003 to June 2004. He faces a minimum sentence of five years in prison and a potential fine of up to $20 million. Although they argued that he is innocent, in April 2007 his defense lawyers at Duane Morris and Berkowitz Klein asked the court to let them withdraw from his case. The Court denied the firms' requests, writing that if they dropped out, it would signal to other attorneys the case was a sinkhole."