Stocks Slide on Greece Worries, Dow Drops 100 By: CNBC.com News May 08, 2012 at 10:14 AM EDT Stocks extended their losses Tuesday, with the Dow falling below 13,000, as ongoing political unrest in Greece kept investors on edge. Read More >> Related Stocks: Cisco Systems Discovery Communications First Bancorp Inc General Electric HSBC Holdings Plc ADR Home Depot McDonald's Corp Walt Disney Wendys Company Wynn Resorts Yahoo