Costco: The Opportunity Goldman’s Been Waiting For

Costco Wholesale ( COST ) has started to issue new Visa cards to its customers, who after June 20 will no longer be able to use their former Costco cards from American Express ( AXP ). The switch over is just one reason Goldman Sachs ( GS ) cited for boosting the warehouse retail giant to a buy, a move that sent the shares rising 2.6% in recent market action.