Lowe's Cos. Inc. reported weaker-than-expected quarterly sales and earnings and cut its profit outlook for the year as the home improvement chain lost market share to larger rival Home Depot Inc. "Lowe's is a turnaround story, and it's not turning," said Sanford C. Bernstein & Co. analyst Colin McGranahan. The company has cut jobs, curbed store expansion plans and streamlined its supply chain to cut costs and compete more effectively, but it has yet to see results, Reuters reported.