Dean Foods Falters in More Concentrated Milk Market

America’s biggest milk maker is running out of options as milk consumption continues to decline in the U.S. Dean Foods Co.’s sinking sales also have been hurt by big customers such as Walmart Inc.opening their own dairy plants to help guarantee their own supply. The dairy company’s sales last year of $7.8 billion were down 38% from a decade ago.Shares in Dean Foods have lost around 60% of their value this year, and the Dallas-based company’s $141 million market value is about 5% of what it was worth a decade ago.