Amkor Technology ( AMKR ) is an outsourced semiconductor assembly and test, or OSAT, headquartered in Arizona. However, increasingly, it is becoming difficult to call Amkor just an OSAT. OSATs typically operate at the end of the silicon value chain. OSATs are easilyMr Arunangshu Das is a software engineer, a finance and billing architect, and an active investor and entrepreneur. He is developing Tranzoro Investments to fill a critical lacunae - to help US investors understand Indian markets, and Indian inve ...