There is no Radio Shack because they were bought by hedge fund raiders who sold all the real world assets to another company they had formed. Then rented it all back to the Radio Shack at highly inflated prices. At the same time they continually increase the fee that independently run Radio Shack stores paid. A few years later they had drained the company of everything and shorted the stock in to the cellar. Bankruptcy and final liquidation happened quickly.

Radio Shack joined others like Sears and Toys R Us in getting destroyed by vultures. Vultures who know how to get the most out of a company and not owing anything at the end by making the stock worthless.