 DSW parent Designer Brands Inc. shares DBI, -2.47 jumped 6.9 in premarket trade Tuesday, after the retailer blew past earnings estimates for its fiscal second quarter. The company, which designs and makes shoes and footwear under the Camuto group, posted net income of 42.860 million, or 55 cents a share, for the quarter to July 31, after a loss of 92.214 million, or 1.36 a share, in the year-earlier period. 