
Shares in Ukraine-focused miner Ferrexpo FXPO.L jump 20% to 70.7 pence
Top gainer on the FTSE mid cap index .FTMC, which is up 0.8%
Stock on track to post its best day since February 6, if gains hold
Ukraine and U.S. sign deal, which will give U.S. preferential access to new Ukrainian minerals deals and fund investment in Ukraine's reconstruction
Including session's gain, stock down 33.5% YTD