Stocks Turn Higher After Existing Home Sales By: CNBC.com News September 19, 2012 at 10:14 AM EDT Stocks turned higher after a wobbly open Wednesday, following a better-than-expected existing home sales report. Read More >> Related Stocks: 3M Co Adobe Systems Amazon.com American Express Apple AutoZone Bank of America Bed Bath & Beyond D.R.Horton FedEx Corp Genl Mills Goldman Sachs Group Google, Inc. Groupon Cl A Humana PulteGroup United Parcel Service United Technologies Visa Wal-Mart Stores, Inc.