Amsterdam, 2015-4-13 — /EPR Retail News/ — X5 Retail Group N.V., (‘X5’ or the ‘Company’) a leading Russian food retailer (LSE ticker: ‘FIVE’), announces that the Standard and Poor’s rating agency upgraded the Company's credit rating from "В+" to "ВB-" with a stable outlook. In the report, S&P noted considerable improvements in the Company's 2014 operating…