polymetal international plc poly shares advanced 324 to £188 thursday on what proved to be an allaround dismal trading session for the stock market with the ftse 100 index ukx falling 038 to 747169 polymetal international plc closed £174 short of its 52week high £362 which the company reached on january 18 trading volume 780543 remained 942561 below its 50day average volume of 17 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use