© Darren Bernhardt/CBC CBC Manitoba is number 1 again in the Winnipeg radio market, up to a 15.5 per cent share from 14.4 per cent in spring. Continuous support from Manitobans has kept CBC Radio in the No. Recent data from Numeris, the company that tracks and measures ratings, has CBC in the top spot with a 15.5 per cent share of listeners in the Winnipeg market. Information Radio with Marcy Markusa holds the number 1 ranking for Winnipeg morning shows, with a 23.5 per cent market share. Radio Noon with Marjorie Dowhos holds steady at the number 2 spot with a 12.4 per cent share.