** Shares in ArcelorMittal MT.AS rise around 3% after Morgan Stanley upgraded its rating on the stock to "overweight" from "equal-weight", citing limited risks and the company's good position in case of Europe's economic recovery
** The analysts say in a note their full-upside scenario sees the steelmaker valuation offering a 45-50% discount compared with historical levels
** "Upside to earnings would support accelerated buybacks alongside base dividends, reinforcing equity upside," MS says
** They also add that the "pragmatic" approach to decarbonisation with step-by-step investments limits company's financial risk
** MS also raised its PT on the stock by 37% to 46.20 euros ($53.97)
($1 = 0.8561 euros)
(Reporting by Mateusz Rabiega)
((Mateusz.rabiega@thomsonreuters.com))