Amkor Technology (AMKR) closed the most recent trading day at $35.08, moving -1.52% from the previous trading session. The stock's change was less than the S&P 500's daily gain of 0.23%. Meanwhile, the Dow lost 0.17%, and the Nasdaq, a tech-heavy index, added 0.34%.Heading into today, shares of the chip packaging and test services provider had gained 5.45% over the past month, outpacing the Computer and Technology sector's loss of 2.01% and the S&P 500's gain of 3.96% in that time.The investment community w ...