Jacksonville, Florida-based supermarket chain Winn-Dixie Stores has posted net earnings of US$52.8m, or US$0.37 per diluted share, for its Q4 ended 26 June, compared to US$19.2m, or US$0.14 per diluted share, year on year.  Year-to-date, net earnings from continuing operations were US$189.5m, or $1.35 per diluted share, as compared to US$76.8m, or US$0.55 per diluted share, for the previous year.