Shares of AMC Entertainment (NYSE: AMC) have jumped over 20% as investors react positively to the movie theater chain’s strong performance over the Memorial Day holiday weekend.As of press time, AMC was up 24.65%, trading at $4.02. The rally marks a sharp rebound for AMC shares, which have gained 37% over the past week and 47% in the last month. However, despite this short-term momentum, AMC remains slightly down, 0.12% year-to-date.AMC one-month stock price chart. Source: FinboldWhy AMC stock is surgingThe ...