shares of informa plc inf rallied 277 to £683 thursday on what proved to be an allaround great trading session for the stock market with the ftse 100 index ukx rising 076 to 782016 informa plc hit a new 52week high surpassing its previous peak of £682 which the company achieved on january 19 trading volume 20 m remained 29 million below its 50day average volume of 49 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