Greek jitters slam FTSE 100 into red territory By: MarketWatch June 12, 2015 at 05:07 AM EDT The FTSE 100 almost erases its weekly gain, tracking European markets lower after the latest blow to Greece and its attempt to stave off a default. Read More >> Related Stocks: BP Plc ADR Bhp Billiton Ltd ADR Royal Dutch Shell Cl B ADR