Blockbuster's stock must be worth something, says Ron Krenn, a 48-year-old day trader in Daytona Beach, Fla., who hopes to profit on the equity of what was once the world's largest movie rental chain, seven months after it filed for Chapter 11. He's not alone. Since Sept. 23, the date of Blockbuster's bankruptcy, the stock price has ranged from 4展开▼
