Amkor Technology (AMKR) shares have plunged 23.7% year to date, underperforming the Zacks Electronics - Semiconductors industry, Zacks Computer and Technology sector and the S&P 500 index’s return of 33%, 26.3% and 23.9%, respectively.Amkor stock continues to face a steady decline due to prolonged pressure on its top-line growth owing to weakness across traditional servers, networking and automotive end markets. AMKR’s mainstream product segment has been witnessing a year-over-year decline for the consecuti ...