Stocks Open Higher on Earnings, Jobless Claims; 3M Slumps By: CNBC.com News April 25, 2013 at 09:30 AM EDT Stocks opened in positive territory Thursday, lifted by a batch of better-than-expected earnings and after an upbeat jobless claims report. Read More >> Related Stocks: 3M Co Amazon.com Astrazeneca Plc ADR Baidu.com SP ADR Dow Chemical Expedia Exxon Mobil Starbucks Corp United Parcel Service