As shares of GameStop GME, -0.20{de3fc13d4eb210e6ea91a63b91641ad51ecf4a1f1306988bf846a537e7024eeb}, AMC Entertainment Holdings AMC, -3.28{de3fc13d4eb210e6ea91a63b91641ad51ecf4a1f1306988bf846a537e7024eeb} and other targeted stocks started to soar last month,...