Amkor Technology (AMKR) closed at $39.09 in the latest trading session, marking a -0.2% move from the prior day. This change lagged the S&P 500's 0.16% gain on the day. On the other hand, the Dow registered a gain of 0.04%, and the technology-centric Nasdaq increased by 0.49%.Coming into today, shares of the chip packaging and test services provider had gained 17.07% in the past month. In that same time, the Computer and Technology sector gained 5.94%, while the S&P 500 gained 3.22%.The investment community ...