RadioShack posted an 18 percent gain in profits in the second quarter, a result achieved mostly through cost-cutting.

By Stephen Silver

RadioShack posted an 18 percent gain in profits in the second quarter, a result achieved mostly through cost-cutting. At the same time, the company's sales dropped 2.9 percent, which sent the company's stock down later in the day.

The company reported strength in the netbooks, television antenna and digital TV categories, but weakness in the GPS, wireless accessories, digital-to-analog converter boxes and more.

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