Pan American Silver (PAAS) shares rallied 10.6% in the last trading session to close at $24.41. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 5% gain over the past four weeks.Shares of Pan American Silver have gained on the back of the surge in silver prices, which were at around $33 an ounce on Friday. Silver has gained on safe-haven demand amid uncertainty surrounding the U.S. election and rising tensions ...