Roundy's: Roundy's will close last of its Rainbow stores Tuesday

Roundy's Inc. will close its last nine Rainbow supermarkets Tuesday because the Milwaukee-based grocer failed to find a buyer for the stores. The affected stores are in the Twin Cities area, in Cottage Grove, Shoreview, Inver Grove Heights, Apple Valley, Blaine, Bloomington, Coon Rapids, Maple Grove and Savage, the St. Paul Pioneer Press reports. The nine stores are casualties of Roundy's hasty exit from the Twin Cities market, which was announced in May. Roundy's (NYSE: RNDY) found buyers for…